Pilot Operated Safety Valve

MstnLand's series of pilot operated safety valve with newly-structured. It's mainly applied to such trades as petroleum & natural gas, chemistry, electric, metallurgy & burning gas. It is the best super-pressure protecting equipment on press equipment, container, or pipeline. It is mainly characterized by shifting direct function of spring to indirect function of guide valve. What's more, main valve applying for sleeve piston &double sealed seat is characterized by high precision of action, good recycling function, fast turning back to seat, ability to high-pressure leaking, long working time & security, together with readjustment on line, automatic turning back to seat after leaking again, tight closure, operating and maintaining convenience.