Valve Knowledge - MstnLand International Company

Selection Criteria for Types of Valves for Chemical Industry May 07-2023

Valves for chemical industry are a major accessory for fluid control in industrial pipelines, facing a variety of working conditions due to the disorderly and complex types of valves in the industrial...

What’s the dissolved air flotation (DAF) May 06-2023

Dissolved air flotation (DAF) is a wastewater clarification process for the separation of solids, grease, and oils. The system helps concentrate sludge, removes a wide range of suspended solids (fats,...

Application fields for air flotation unit May 06-2023

The air flotation process is an effective and fast method of separating solid particles from wastewater, which are designed to remove total suspended solids (TSS), biochemical oxygen demand (BOD), and...

How does dissolved air flotation (DAF) work? May 06-2023

DAF is based on a physical/chemical process and be applied widely as one of the most effective and economic ways to remove suspended solids (SS), fats, oils and grease (FOG), phosphorus (P) from indus...

How does water treatment flocculant participate in dissolved air flotation (DAF) process May 06-2023

The dissolved air flotation (DAF) process is based on coagulation and flocculation mechanisms. By adding specific chemicals (water treatment flocculant), such as iron chloride and aluminum chloride, c...

Structure, Working Principle, and Maintenance of Rotary Plug Valves Apr 19-2023

Plug valve is a quarter-turn valve that uses a cylindrical or conical plug to control linear flow through the valve body. The plug has a straight-through opening. As a full-bore structure, the opening...

Comparison of Pneumatic Control Valve and Hydraulic Valve Apr 01-2023

A pneumatic control valve refers to various pneumatic components that control the pressure, flow rate, and direction of the gas flow in a pneumatic system, ensuring the normal operation of pneumatic e...

Preventive Measures to Solve Water Hammer Phenomena in Valve Systems Mar 24-2023

In pipelines operating under pressure, sudden changes in water velocity caused by external factors such as the abrupt closure of a safety valve or sudden stoppage of a water pump can lead to hydraulic...

Reason Analysis of Valve Leakage Mar 17-2023

Valve leakage can generally be divided into two types: external leakage and internal leakage. Internal leakage refers to the valve not closing tightly due to erosion and abrasion of the conveying medi...

Effective Prevention Against Medium Backflow by Check Valves Mar 10-2023

In the process of using check valves, the medium flows in the direction of the arrow shown in the diagram. When the medium flows in the designated direction, the valve disc is opened by the force of t...

Measures for Handling Valve Leaks Mar 03-2023

Fix the valve body pressure plate and increase the bolt preloadValve internal leakage or a small amount of leakage, the first job is to tighten and fix the pressure plate of the valve body, and by inc...

Three Common Technical Problems in Industrial Valve and Pipeline Operations Feb 24-2023

Valves play an irreplaceable role in production activities. Therefore, valves are important components and play a very critical role. The operation of valves will directly affect the stable production...

Analysis of Performance Characteristics and Design Requirements for Wafer Style Butterfly Valves Feb 17-2023

Wafer style butterfly valves can be used as devices for cutting off and regulating the flow of various media in pipelines. By selecting different materials for the valve plate and sealing seat, and th...

Butterfly Valve Actuation Feb 10-2023

There are multiple ways to operate or actuate a butterfly valve, A brief description of the different types of actuation methods is below.Manual butterfly valveManually actuated butterfly valves are i...

Application of Flanged Eccentric Butterfly Valve Feb 10-2023

The advantages of eccentric butterfly valves and other butterfly valves are very prominent, so they are widely used in all aspects of life and work, meeting various different requirements. With the co...

Characteristics and Applications of Pneumatic Ball Valves Feb 03-2023

Pneumatic ball valve consists of a ball valve and a pneumatic actuator, which can be either a double-acting or a single-acting actuator. The ball valve can be controlled through an electromagnetic val...

The Features and Performance of Butterfly Valve Jan 18-2023

Butterfly valve is mainly used in the pipeline for shutting off and throttling. This article will explain the features and performance of butterfly valve in detail.What are the advantages of butterfly...

Installation and Daily Maintenance of Industrial Butterfly Valve Jan 16-2023

The installation position of butterfly valves is usually between flanges. Butterfly valves should be installed at least four to six pipe diameters away from discharge nozzles, elbows or branches to mi...

6 Parts of Butterfly Valve + Function Jan 13-2023

Butterfly valves are considered to be among the quarter-turn valves that are used in pipelines to shut-off flow. It is often said that butterfly valves can be used to regulate the flow. In order to kn...

What Are the Difference Between Zero Offset, Double Offset and Triple Offset Butterfly Valves Jan 05-2023

Butterfly valves come in a variety of shapes and sizes, each suited to particular pressures and purposes. There are two kind of butterfly valves: concentric (zero offset) and eccentric type. The eccen...

The Difference Between the Electric Butterfly Valve and Electric Gate Valve Jan 04-2023

Definition for electric butterfly valve:The electric butterfly valve are common used in industrial pipeline, with characters of small volume,less material and less weight. It is more economical compar...

How to Select Concentric Butterfly Valve, Double Offset Butterfly Valve and Triple Offset Butterfly Valve? Jan 04-2023

Butterfly valves are partial rotary valves, which can be used to cut off the medium, and can also be used to adjust the pressure, temperature and flow of the medium. Butterfly valves are widely used i...

General Installation and Maintenance of Butterfly Valve Jan 03-2023

Butterfly valve allows bi-directional flow of fluids and provide air tight shutoff at full rated pressure.Advantages of Butterfly ValveThey offer very little resistance to the fluid when compared to e...

End Connection Types Of Butterfly Valve Dec 28-2022

Butterfly valves have multiple types of end connections, depending on different working and installation conditions, including wafer (flangeless), lug, double flanged and butt weld end. Some options a...

Type of Actuator for Butterfly Valves Dec 28-2022

Many types of actuators can control the opening and closing characteristics of a butterfly valve. The actuator provides the torque required to properly open and close the valve during service. The fol...

Common Materials of Butterfly Valve Manufacturing and Application Dec 28-2022

Butterfly valves, like any other type of valve, are available in a variety of materials and body, disc, and seat combinations. The materials are chosen based on the fluid to be shut off, the pressure,...

Difference Between Wafer Butterfly Valve And Flange Butterfly Valve Dec 23-2022

Butterfly valve is a valve named according to the shape of the opening and closing parts. The opening and closing parts can be round or rectangular. The valve core controls the opening and closing of ...

Types and Classifications of Stainless Steel Gate Valves Dec 12-2022

Gate valve is mainly composed of valve body, bonnet, gate plate, valve stem, valve seat and sealing packing. It is one of the common valve types in isolation valves. The main purpose of a gate valve i...

How to Install Stainless Steel Flanged Butterfly Valve? Dec 05-2022

The stainless steel flanged butterfly valve body is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal. It has excellent sealing performance, corrosion resistan...

The Difference Between Electric Hard-sealing and Soft-sealing Butterfly Valve Nov 17-2022

With the rapid development of many industrial fields in the country, industrial automation has slowly replaced the artificial operation system, especially the use of various self -control valves. The ...

The Difference Between Electric Clamps and Flange Butterfly Valves and Its Selection Nov 10-2022

As one of the common valves in the current pipeline, the electric butterfly valve is used to achieve the intermediary quality of the pipeline system and the control of flow. It has been very widely us...

Top Valve Manufacturers In USA Nov 01-2022

In 2022, the valve market in the United States is 46.1 billion US dollars, and the valve market growth rate in 2022 is 15.5%. It is predicted that by 2032, the average compound growth rate of the valv...

Top 10 Valve Manufacturers In India Oct 31-2022

By 2022, the Indian industrial valve market will be worth USD 27314.5 billion. Due to the rapid increase of government initiatives and product localization, it is expected that the market will achieve...

Top 10 Valve Manufacturers In China Oct 31-2022

The global valve output value will be 64 billion dollars in 2019, 73.2 billion dollars in 2020 and 76 billion dollars in 2021. The compound growth rate of global valve output value was basically maint...

Top 10 Valve Manufacturers In World Oct 31-2022

In 2020, the global industrial valve market will reach US $58.5479 billion, and by 2028, the market will reach US $93.6649 billion, with a compound annual growth rate of 6.0%. Industrial valves are ma...

What is Fluorine-lined valve Oct 27-2022

Fluorine-lined valve, also known as fluoroplastic lined corrosion-resistant valve, is a process of processing polytetrafluoroethylene or other polymer materials, and then placing the lining on the inn...

Steam Trap Oct 20-2022

Steam traps are often referred to as traps for short. The reason for the emergence of steam traps is that steam is often used in our daily production process. Whether it is producing steam or using st...

What Are Chemical Valves? Oct 13-2022

The chemical valve is an important accessory for controlling the flow of the medium on the chemical pipeline. For the detailed principle and structural cross-sectional view, please refer to the releva...

Composition and Characteristics of Swing Type Check Valve Oct 06-2022

The swing type check valve, also known as a one-way valve or a check valve, is used to prevent the backflow of the medium in the pipeline. The valve that opens or closes by itself by the flow and forc...

Selection of Valve Electric Actuator Models Sep 26-2022

Valve selection is a relatively complex and extremely important work. The selection of the actuator is an important part of the valve selection process, and this part determines the stability of the v...

How Much Do You Know About Marine Butterfly Valves? Sep 22-2022

Marine butterfly valve is also called butterfly valve. As the name suggests, its key components are like butterflies facing the wind and swinging freely. The disc of the butterfly valve is a disc, whi...

《Introduction to Several Gates of Gate Valve》 Sep 20-2022

Wedge-type single-gate gate valveThe structure is simpler than that of the elastic gate valve;At higher temperature, the sealing performance is not as good as that of elastic gate valve or double gate...

《Selection Principle of Globe Valve》 Sep 20-2022

Globe valve refers to the closing piece (disc) along the center line of the valve seat movement. According to the moving form of the disc, the change of the valve seat opening is directly proportional...

《Chemical Valve Material Recommended for Acid Medium》 Sep 20-2022

Corrosion has always been one of the most troublesome hazards of chemical equipment. If it is careless, it will damage the equipment, or even cause accidents or disasters. According to relevant stati...

《Valve and Technical Automation》 Sep 20-2022

In order to successfully automate the process, it is most important to ensure that the valve itself can meet the special requirements of the process and the medium in the pipeline. Usually the product...

《Principles and Precautions for Valve Pressure Testing》 Sep 20-2022

In general, the strength test is not required for the valve, but the strength test of the valve body and bonnet or the valve body and bonnet damaged by corrosion should be carried out after repairing....

Design of Floating Ball Valve Structure Sep 19-2022

Ball valve, whose opening and closing parts are driven by the valve stem and rotate around the axis of the valve stem. Because of its many advantages, it is widely used in all walks of life and is wel...

Selection Skills of Flanged Gate Valve Sep 15-2022

Flanged gate valves are not only widely used in the industrial field, but their influence in the civil field is also gradually expanding. Let's follow MSTN to understand the selection skills of fl...

The Importance of Check Valves Sep 12-2022

The check valve is a valve that automatically prevents the reverse flow of the medium by means of the force of the medium. The check valve belongs to the automatic type valve, that is, the valve that ...

What Are the Classifications of Globe Valves According to Their Use? Sep 08-2022

1. Fluorine-lined globe valveFluorine-lined valve, also known as fluoroplastic lined corrosion-resistant valve, is a method of placing polytetrafluoroethylene resin (or profile processed) on the inner...

Balanced Bellows Safety Valve Sep 05-2022

Safety valve is an automatic valve, and it also belongs to the category of pressure relief valve. When the medium pressure in the protected system exceeds the set pressure value, it will automatically...

What Are the Main Accessories of the Regulating Valve? Sep 01-2022

The regulating valve positioner is the main accessory of the pneumatic actuator. It is used together with the pneumatic actuator to improve the position accuracy of the valve, overcome the influence o...

Rising Stem vs Non Rising Stem Gate Valve Aug 02-2022

We all know that a gate valve needs to be installed to build a building, but the gate valve has two types of open rods and dark rods, and many users do not understand the situation. What is the differ...

3 Common Technical Problems in Industrial Pipeline Operation Jul 22-2022

A valve finds invincible usage in industrial applications where it is widely used to start, halt or throttle the flow to allow the safe operation of the pipeline system. However, like everything else,...

What Are the Working Principles and Classifications of Pneumatic Ball Valves? Jul 15-2022

Pneumatic ball valves have been widely used in power generation, papermaking, petroleum, chemical industry, atomic energy, aviation, rockets and other departments, as well as people's daily life. ...

Is It True That the Globe Valve is Low in and High Out? Jul 08-2022

Globe valve, also known as cut-off valve, is a kind of forced-sealing valve, which is a kind of cut-off valve. According to the connection method, it is divided into three types: flange connection, th...

What Are the Selection Principles and Product Characteristics of Electric Butterfly Valves? Jul 01-2022

Electric butterfly valves are widely used in textile, power station, petrochemical, heating and cooling, pharmaceutical, shipbuilding, metallurgy, light industry, environmental protection and other fi...

Maintenance Method and Main Characteristics of Electric Ball Valves Jun 28-2022

The electric actuated ball valve is an important actuator in industrial automation control system. The electric ball valve is a valve that rotates around the axis of the valve stem according to the mo...

What Are the Methods and Precautions for the Check Valve Installation? Jun 21-2022

Generally speaking, do not put the weight of the check valve in the piping system, the large check valve should be independently supported so that it is not affected by the pressure generated by the p...

What Parameters Need to Be Carefully Checked when Purchasing a Check Valve? Jun 14-2022

The check valve is generally installed in the discharge pipeline of the pumping system to ensure that the medium conveyed by the pump does not flow back. With so many check valves on the market, findi...

Three Characteristics of Triple Eccentric Butterfly Valve Jun 07-2022

Triple eccentric butterfly valve is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temp...

The application of Cast Iron Valves May 26-2022

The application of cast iron valves can be refered as below:(1) When the nominal pressure PN is less than or equal to 1.0MPa, the working temperature is 10 to 200℃, the working medium is water, water...

What is a V-port Valve? May 14-2022

According to valve-core's opening shape, the ball valve can be divided to O-port, V-port and □-port. The V-port ball valve is fixed ball valve, also is single seat sealing ball valve, has the bes...

Application of Fully Welded Ball Valve May 14-2022

All-welded ball valves are used in heating pipe networks to solve the technical bottlenecks which caused by normal valves, below are the benefits for the application of fully-welded ball valves:1. Ful...

Plug Valve: What is a Plug Valve? May 14-2022

If you are in the valve world at all, you know that the plug valve oftentimes gets a bad rap. There are different reasons for this. One being that the maintenance for these valves is greater than that...

The performance and characteristics of pressure reducing valve and other basic knowledge May 09-2022

The pressure reducing valve reduces the higher liquid pressure in the line before the valve to the level required in the line after the valve. The transmission medium here is mainly water. Pressure re...

Related Problems and Solutions of Pneumatic Ball Valve Maintenance Before Operation May 02-2022

What are the related problems and solutions for the maintenance of pneumatic ball valves before operation? First, check that the valve of the pneumatic ball valve is in the fully open position. After ...

API Valve Standards Defined and Explained Apr 25-2022

API SPEC 6DSpecification for Pipeline Valves. API Specification 6D is an adoption of ISO 14313: 1999, Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves. This Interna...

Difference Between an Electric and Pneumatic Actuator Apr 25-2022

Electric, as well as pneumatic actuators, are quite well known for their varied uses. In case you are confused as to which type of actuator out of these two will suit your needs, then we are there to ...

The Structure Characteristics of Flange Butterfly Valve and Its Buying Skills Apr 25-2022

The structural of flange butterfly valve is especially suitable for large diameter valves. Flange butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and othe...

How to Size Your Valve Project Apr 19-2022

One of the most important aspects of using a valve for any application is to determine its right size. Ascertaining the correct size is extremely important to have adequate control of flow rate. Sizin...

Several Ways to Prolong the Life of Adjusting Valve Apr 18-2022

1. By working with a large opening to prolong the life of adjusting valveLet the adjusting valve work at the maximum opening at the beginning, such as to an extent of 90 percent. In this way, cavitati...

Issues and Details to Pay Attention to when Installing the Valve Apr 18-2022

The quality of the valve installation directly affects the using performance, because we must pay attention to the direction and position of the valve installation. During the installation, we must be...

Difference Between Flanged, Threaded, Socket Weld, and Butt Weld Valve End Connections Apr 06-2022

There are various types of end connections that a valve can have. Depending upon the types of applications the valves are being used for, you can choose the right type of end connections. The common t...

What Are the Similarities and Differences Between Adjusting and Safety Valve Apr 04-2022

1. Similarities between adjusting and safety valveDuring use, if the pressure of the system is too high, the safety valve will trip. The pressure adjusting valve can set the pressure standard. When th...

How to Distinguish Needle Valve from Other Valves? Mar 28-2022

There are different valves for different use. Knowing what valve is being used on a certain engine or things will enable you to maintain its functionality and performance. Different type of valves may...

Solution for the String Pressure of Pressure Reducing Regulator Valve Mar 23-2022

The cascade pressure problem in the pressure reducing regulator valve is a rare occurrence, but it may potentially be a source of failure. The causes and remedies to the pressure reducing regulator va...

Wafer Type Check Valve's Structure & Installation Tips Mar 21-2022

Wafer check valve is also called reflux valve, back pressure valve, one-way valve and non-return valve. Such type of valve is automatically opened and closed by the force generated by the flow of the ...

Difference Between Pressure Reducing Valve, Pressure Regulating Valve, Pressure Relief Valve and Safety Valve Mar 21-2022

The pressure reducing valve, safety valve, pressure regulating valve, pressure relief valve are all belong to pressure valves, mainly have the functional differences.1. Pressure reducing valve is a de...

Detailed Explanation of the Technology of Check and Globe Valves Mar 16-2022

I think the globe valve and check valve are already common conventional valves, but MSTN International Technologies Company will describe their opening and closing techniques, axis distance, and appli...

The Characters for Threaded Ball Valve and Flanged Ball Valve Mar 11-2022

The origin of the name for the threaded ball valve is mainly due to the threaded connection method when it is connected to the pipeline. In terms of materials, it is also divided into carbon steel, st...

Check Valves in LNG Cryogenic Service Mar 11-2022

Because natural gas is currently considered a good source of energy for both environmental and economic reasons, it's growing in use. As a result, the liquified natural gas (LNG) market also will ...

Working Principles, Structures and Applications of Globe Valves Mar 09-2022

1. The working principle of globe valvesGlobe valves are a form of forced-seal valve. The valve stem is used to raise the valve head, changing the distance between the valve disc and the valve seat to...

Safety Valves' Installation Preparation Mar 04-2022

Before the safety valve installation, we should check its structure and make sure its performance can be fully developed. In general, the structure for safety valve mainly shows in below items:1. Make...

When to Use a Instrumentation Manifold Mar 04-2022

Manifolds maintain the flow of a system or line in processing applications.Instrumentation manifolds are key components when customizing your process line. Other valve types, like needle valves and ch...

The Principle for Choosing Needle Valve Mar 04-2022

1. The main pipeline used for sending oil&gas which need be cleaned and be installed underground should choose the needle valve with full diameter and full welded structure; if be installed on the...

How to Choose and Maintain Globe Valve? Mar 04-2022

Choosing the suitable globe valve for the right function is crucial.Here are some elements that you should consider before selecting a Globe Valve.Type of FluidIn this, you will consider the type of m...

Overview of High-Pressure Gate Valve and Installation and Maintenance Issues Mar 02-2022

1. The overview of the high-pressure gate valveBecause a high-pressure gate valve is a forced-sealing type valve, when the valve is closed, the valve flap pressure must be provided to push the sealing...

Working Principles of Electric Butterfly Valves Feb 25-2022

1. Overview of electric butterfly valvesWith the rapid development of the country's industrial manufacturing industry, the industry's demand for valves is also increasing, especially for elect...

Precautions for Operating the Control Valve Feb 18-2022

The control valve does not need any external energy, and relies on the pressure change of the medium to be adjusted for automatic adjustment, eliminating the residual pressure head of the pipe network...

Selection of Valve Material Feb 11-2022

It is usually not enough to simply select the type of valve suited to given process parameters. Selecting compatible materials of construction helps ensure the lifespan of the valve, as well as the sa...

Introduction and Selection of Safety Valves Feb 11-2022

The safety valve is a special valve which the opening and closing part always stay on closed state under the action of an external force. When the pressure of the medium in the equipment or the pipeli...

Overview and Application of Check Valve Feb 11-2022

Check valve is also known as reverse flow valve, check valve, back pressure valve and one-way valve. This type of valve belongs to an automatic valve and is automatically opened and closed by the forc...

Classification and Other Knowledge of Valves Feb 04-2022

Nowadays, in order to meet the actual needs of the country, the valve production technology is becoming more and more mature. There are many types of valves, and their classification difficulty is als...

Installation Methods of the Sewage Valve Jan 20-2022

The quick sewage valve is evolved from the gate, and uses the gear to rotate 90 degrees to drive the valve stem to lift to achieve the purpose of opening and closing. The quick sewage valve is not onl...

Introduction to 1 Piece & 2 Piece & 3 Piece Ball Valves Jan 12-2022

Ball valves are widely used in many commercial, institutional and industrial areas where it requires the isolation of system parts, or just to regulate the on-off state of the system. The product vari...

Balancing Valve Working Principle Jan 07-2022

Balance valve is a dynamic and static balancing valve under hydraulic conditions. such as static balance valve, dynamic balance valve.Valve body material: cast iron, cast steel .work pressure is 0.6-4...

The Minimum Maintenance Condition of Hydraulic Valve and the Method of Noise Reduction Jan 06-2022

Hydraulic valve is an automatic component operated by pressure oil. It is controlled by pressure oil of pressure distribution valve. It is usually used in combination with electromagnetic pressure dis...

Common Faults and Preventive Measures of Gate valves Jan 05-2022

Gate valves are the main components of the oil (gas) wellhead, several kinds of common faults in the use of the common faults as follows.1. Leakage between gate valve and gate valve junctionFirst, che...

Steps To Choose Valves Jan 04-2022

To know the application of valves in devices and equipment, as well as working conditions, practical medium, working pressure, and working temperature.To confirm the nominal diameter and connecting me...

Do You Make These 5 Mistakes in Choosing Valves for Steam System? Jan 04-2022

Steam generated by water boilers is used in a wide range of industrial applications. Unlike most other industrial fluids, steam has special characteristics that make it difficult to control with valve...

Do You Know All these Characteristics of Knife Gate Valves? Jan 04-2022

Knife gate valves have advantages like simple and compact structure, reasonable design, material saving, reliable sealing, flexible operation, small volume, smooth passage, small flow resistance, ligh...

Analysis of Common Failures of Exhaust Valve Dec 27-2021

Ⅰ. Burnout of exhaust valveThe exhaust valve burnout is the most common failure of the exhaust valve. The main reason is that the exhaust valve is not tightly sealed, causing high-temperature gas lea...

Types and Functions of Check Valve Dec 20-2021

Ⅰ. Definition of check valveThe definition of a check valve refers to a valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent the medium from flowin...

The Function For Valves' Commonly Used Material Dec 17-2021

Gray cast iron used for producing the low-pressure valves, suitable for pressure below than PN1.0MPa and not larger than PN1.6MPa unless the small size valves can be used. And temperature usually betw...

What Are The Commonly Used Materials Of Valves Dec 17-2021

The commonly used materials for valves usually have gray cast iron(HT200, HT250), malleable cast iron(KTH350-10, KTH450-6), spheroidal graphite cast iron(QT400-15, QT450-10), carbon steel(WCA, WCB, WC...

Precautions for Purchasing Regulating Valves Dec 13-2021

Ⅰ. How to select the valve body type of the adjusting valveThere are many types of valve bodies for regulating valves. Common types of valve bodies include straight-through single-seat, straight-thro...

Pipeline Valves-which Is Durable Between Butterfly Valves And Ball Valves? Dec 09-2021

Which is durable between butterfly valves and ball valves? This is not absolute, just rely on the working condition is more suitable for butterfly valves or ball valves.Here are the advantages and dis...

Working Principle and Classification of Adjusting Valve Dec 06-2021

In the automatic control of modern factories, the regulating valve plays a very important role. The production of these factories depends on the correct distribution and control of the flowing medium....

What Need To Be Paid Attention When Installed The Pipeline Valves? Dec 01-2021

What need to pay attention to when installed the valves? First we should choose the suitable valve, because valve is the control part in the pipeline flow transportation system, it's used to chang...

The Main Classification And User Condition For Sealing Material Of Valves Dec 01-2021

The seal is the most important part in the valves, its main purpose is to prevent leakage. The valve sealing seat also be called sealing ring, it contact with the pipeline's medium directly and ca...

The Description For Valves Pressure-bearing Direction And Requirement For Valves Installation Direction Dec 01-2021

Valves pressure-bearing means the pressure that the valves can bear, that is, valves pressure level is larger than the pipeline’s designed pressure level. Valves pressure-bearing direction means that...

Application Requirements of Regulating Valves in Modern Industry Nov 24-2021

Advanced modern industry is marked by production automation. From the development history and progress of automation system, the change of technical tools plays a very important role. A variety of adv...

How to Solve the Leakage Problem of Regulating Valves? Nov 17-2021

The external leakage of the regulating valves can be solved by pressing the packing or replacing the packing. For the working conditions that firmly need to eliminate the external leakage, the upper v...

Types, Characteristics and Selection Principles of Plug Valves Nov 10-2021

Ⅰ. Plug valves types1. Fastening plug valvesThe fastening set plug valves are usually used for low-pressure straight pipe. The sealing performance completely depends on the fit between the plug and t...

The working principle for ball valves Nov 08-2021

The opening and closing parts for ball valves is a sphere with circular channel, rotating around the axis which is vertical with the channel. The sphere turn around with stem to make the channel closi...

The reason for valves sealing face's leakage and solution ways Nov 08-2021

Valve is one kind of the most used control part in flow systems, can be used for opening & closing, or controlling the flow direction, or adjusting. From the simplest function of cutting off, the ...

Use Methods of Pipeline Filters Nov 03-2021

As a hydraulic term, filter for pipeline is a filter used in the pipeline part of the hydraulic system. Filter for pipeline is a filter involved in pipeline transportation. The filter for pipeline is ...

Difference between gate valves and globe valves Oct 25-2021

From the structure:The length of gate valves is shorter than globe valves, but the height is higher than globe valves. We should pay attention to the height when installing the stem gate valves, if th...

The knowledge for water treatment control valves' maintenance and pressure testing Oct 25-2021

How to maintain the water treatment control valves?1. Firstly, close the front and back sides of water treatment control valves.2. Loose the screw which on the bonnet of water control valves, so relea...

The Function for Single-port Exhaust Valve and the Double-ports Exhaust Valve Oct 25-2021

Exhaust valve is a special valve used to prevent negative pressure in the process of stopping the pump water hammer. It is installed in the raised part of the pipeline, inhale air when the pipeline’s...

Method of Replacing Flange Gasket of Gate Valves Oct 25-2021

1. Preparations for flange gasket replacement of gate valves(1) Material: butter, cotton yarn, leak detection fluid, sealing gasket.(2) Tools: wrench, screw.2. Procedures for replacing flange gaskets ...

Electric Actuator Selection of Electric Butterfly Valves Oct 18-2021

Electric butterfly values are composed of butterfly values and electric devices. Therefore, after the butterfly value is determined, it is important to correctly choose the electric device to meet the...

Help You to Understand the Difference Between Globe Valves and Gate Valves Oct 11-2021

Globe valves, gate valves, butterfly valves, check valves and ball valves are all indispensable control components in various piping systems. Each valve has a different appearance, structure and funct...

Ball Valve Maintenance And Protection Details Oct 04-2021

The ball valve is a general valve with wide application. It has a large amount of consumption and fast consumption. Therefore, reasonable maintenance is very necessary. MSTN International Technologies...

How to Solve the Malfunction of Electric Wafer Butterfly Valves Sep 28-2021

Electric wafer butterfly valves control the switch rely on the power supply of the electric actuator, it doesn't have flange itself, so the valves body's thickness is relatively thinner, use a...

The Origin and Development for Valves Sep 28-2021

1. What are ValvesValves are devices to control the flow and pressure, as a control part of pipeline transportation systems. The flow include liquid, gases, gas-liquid mixture or solid-liquid mixture....

What Are the Factors That Affect the Sealing Performance of the Valve Sep 27-2021

1. Quality of valve sealing surfaceWhen the specific pressure on the valve sealing surface is below 40MPa, the quality of the sealing surface plays a decisive role in the working sealing performance o...

Gate Valve - How They Work Sep 26-2021

A gate valve controls the media's flow by lifting the gate (open) and lowering the gate (closed). A gate valve's distinct feature is the straight-through unobstructed passageway, which induces...

Solutions for Regulating Valves That Are Often Stuck or Blocked Sep 20-2021

1. Cleaning method of control valveWelding slag, rust, slag, etc. in the regulating valve pipeline cause blockage or jam in the orifice, guide part, and balance hole of the lower bonnet, causing strai...

Four Technical Requirements of Modern Coal Chemical Industry on Valve Products Sep 13-2021

Ⅰ. Requirements for chemical valve materialsDue to the existence of coal-oil slurry in the direct coal liquefaction reaction, the abrasion of chemical valves, pipelines and other equipment materials ...

Application of High-performance Triple Eccentric Bidirectional Hard-seal Butterfly Valve Sep 06-2021

At present, the butterfly valve, as a component used to realize the on-off and flow control of the pipeline system, has been extremely widely used in many fields such as petroleum, chemical industry, ...

Notes on the Ball Valves Installation Aug 23-2021

In the past, we have shared the performance, principle, structure and classification of ball valves to help our customers achieve better model selection. In addition, the ball valves installation is a...

The Structural Principle of Stainless Steel Gate Valve Aug 16-2021

The structural principle analysis of gate valves is problem we have encountered before, and it is also a popular topic that everyone generally talks about. You may see related consultations about stai...

General Knowledge About the Selection of Gate Valve and Butterfly Valve Aug 09-2021

Ⅰ. Regular selection of gate valve and butterfly valveIn this artical, the regular selection of gate valve and butterfly valve will be inreoduced.In selecting different types of butterfly valves and ...

Classification of Ball Valves Aug 02-2021

The ball valve and the plug valve are the same type of valve, but their functions are different. Today, the Shanghai ball valve manufacturer, HUAGANG Valve will tell you the classification and functio...

Application Of Gate Valve Jun 24-2021

Gate valves are a very high-usage valve that can be encountered even in everyday life. But what is the purpose of the specific gate valve, and which gates are often used on which valves?

What Is The Future Development Prospect And Trend Of Valves In China Jun 21-2021

The market competition draws our country valve round and round of fierce competition, the development trend of the future valve is the focus of peer concern.

Attention For Valve Procurement Jun 17-2021

As a purchaser, there are some precautions when buying a valve that we need to consider. In order to avoid ambiguity, each valve should be accurately specified.

Valve Industry Development Trend Jun 14-2021

At present, a new round of industrial revolution is emerging in the world. In terms of production mode, manufacturing is characterized by digitalization, networking and intelligentization.

Chemical Industry Valve Selection Jun 10-2021

In chemical industry, the medium transported in pipelines usually has certain corrosiveness, such as sulfuric acid, hydrochloric acid, nitric acid and other corrosive media.

Classification And Characteristics Of Gate Valves Jun 03-2021

Gate valves are widely used in pipelines, mainly to connect and cut off the role of the medium. Not suitable for regulating the flow of the medium, but can be used to determine the flow based on the height of the valve stem lift.

Commonly Used Valve Introduction May 27-2021

The valve is a pipeline accessory, used to open and close the pipeline and control the flow of fluid medium in the pipeline. The functions of the valve in the pipeline include cutoff, adjustment.

Introduction To Check Valve May 20-2021

Check valveCheck valve is to rely on the flow of the media itself and automatically open, close valve disc, used to prevent the media backflow valve, also known as reverse valve, one-way valve, revers valve

Key Point Of Valve Selection May 13-2021

Selection of valvesThe first step in ensuring valve life is to achieve the best performance level of the valve, so we should make sure to select the right valve to use in the right place.

Difference Between Non-rising Stem Gate Valve And Rising Stem Gate Valve May 06-2021

1. The lifting screw of Non-Rising Stem Gate Valve is only rotating without moving up and down. The exposed one is only a rod. The nut is fixed on the gate. The screw is used to lift the gate.

The Working Principle Of Gate Valve Apr 29-2021

Gate valve is basically used in fluid pipelines for controlling the flow of fluid. There will be one gate or wedge in gate valve and it will control the fluid flow.