Cases

FAQ

VALVES & FITTINGS

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Brass Gate Valves Cast Iron Gate Valves Cast Steel Gate Valves Forged Steel Gate Valves Stainless Steel Gate Valves Rising Stem Gate Valves Non-rising Stem Gate Valves Double Disk Parallel Gas Gate Valves Knife Gate Valves Bellows Sealed Gate Valves

Globe Valves

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Cast Iron Globe Valves Cast Steel Globe Valves Forged Steel Globe Valves Stainless Steel Globe Valves Brass Globe Valves

Butterfly Valves

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Wafer Type Butterfly Valves Flange Type Butterfly Valves Eccentric Butterfly Valves Lug Type Butterfly Valves

Check Valves

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Cast Steel Check Valves Cast Iron Check Valves Stainless Steel Check Valves Brass Check Valves Lift Check Valves Swing Check Valves Forged Steel Check Valves

Ball Valves

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Cast Iron Ball Valves Cast Steel Ball Valves Stainless Steel Ball Valves Brass Ball Valves Fully Welded Ball Valves Electric Ball Valves Ceramic Core Ball Valves Multiport Ball Valves Rotary Valves Top Entry Ball Valves Floating Ball Valves High Pressure Ball Valves High Temperature Ball Valves V-port Ball Valves

Control Valves

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Globe Control Valves

Plug Valves

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Cast Iron Plug Valves

Regulating Valves

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Cast Iron Regulating Valves

Balance Valves

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Cast Iron Butterfly Balance Valve Cast Iron Internal Thread Globe Balance Valve Brass Balance Valve Number-lock Balance Valve

Safety Valves

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Closed Spring Loaded Full Bore Type Safety Valve Closed Spring Loaded Low Lift Type Safety Valve High Temperature And High Pressure Safety Valve Pilot Operated Safety Valve Spring Full Bore Type Safety Valve With Radiator Spring Full Bore Type With Lever Safety Valve Spring Loaded Low Lift External Thread Type Safety Valve Spring Loaded Low Lift Type Safety Valve Spring Loaded Low Lift Type With Lever Safety Valve Stainless Steel Spring Loaded Full Bore Type Safety Valve With Handle Twin Spring Type Safety Valve

Instrument Valves

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Needle Valves Other Valves

LNG Cryogenic Valves & Accessories

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LNG Filling Nozzle Cryogenic Gas Return Nozzle Cryogenic Gas Refueling Receptacle Cryogenic Gas Relief Valve Cryogenic Gas Shut-off Valve Cryogenic Gas Breakaway Coupling Cryogenic Gas Pressure Regulator Cryogenic Gas Check Valve

Pipeline Filters

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Cast Iron Filter Cast Steel Filter Stainless Steel Filter Brass Filter

Pipeline & Fittings

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Fittings

Flanges

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Blind Flange Lap Joint Flange Long Welding Neck Flange Slip-on Flange Socket Welding Flange Threaded Flange Welding Neck Flange Plate Flange Spectacle Blind Orifice Flange Tube Sheet Anchor Flange Swivel Flange Reducing Flange Loose Flange

Customization

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Two Way Distributing Valve Rotary Discharge Valve

Notes on the Ball Valves Installation

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 also a very important and delicate matter. In this issue, MSTN will provide you with a better analysis from before and after the ball valve installation to avoid unnecessary trouble and loss.

1. Preliminary preparation for ball valves installation

⑴ Proper supports should be equipped on the front and rear pipelines of the ball valve, or the front and rear pipelines should be coaxial, and the sealing surfaces of the two flanges should be parallel. The piping should be able to bear the weight of the ball valve.

⑵ Purge the front and rear pipelines of the ball valve to remove the oil stains, welding slag and all other impurities in the pipelines.

⑶ Check the mark of the ball valve to find out that the ball valve is intact. Fully open and close the valve several times to confirm that it is working properly.

⑷ Remove the protective parts on the connecting flanges at both ends of the ball valve.

⑸ Check the valve hole to remove possible dirt, and then clean the valve hole. Even small foreign objects between the valve seat and the ball may damage the valve seat sealing surface.

2. During the ball valves installation

⑴ Install the valve on the pipeline. Either end of the valve can be installed at the upstream end. The valve driven by the handle can be installed at any position on the pipeline. However, floating top entry ball valves with gearboxes or pneumatic drives should be installed upright, that is, on a horizontal pipeline with the drive device above the pipeline.

⑵ Seal gaskets are installed between valve flange and pipeline flange according to pipeline design requirements.

⑶ The bolts on the flange should be tightened symmetrically, successively and evenly.

⑷ Connect the pneumatic pipeline (when pneumatic driver is used).

3. Routine inspection after the ball valves installation

⑴ Operate the driver to open and close the ball valve several times. It should be flexible and free of stagnation to confirm that it is working properly.

⑵ Check the sealing performance of the flange joint surface between the pipeline and the HUAGANG ball valve according to the pipeline design requirements.

The above is the related matters before and after the ball valve installation. Of course, they can be carried out when the pipeline medium and the on-site environment are taken into account. The application field, technical indicators, and manufacturing technique of ball valves are also a kind of knowledge, and we will focus on explaining the key points of knowledge in this field in the later period.

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