Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China safety valve manufacturer and distributor of valves, hoses, tubes and pipes. Our oem safety valves are suitable for acid, alkali, water, steam, seawater, coal gas and natural gas. They are widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy. The use of specialized software of Pro/E and CAD has shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of products. Our high-quality products have been exported to the North Amercia, UK, USA, Germany, Italy, India, France, Australia, Japan.

A41H type are used for the equipment and pipeline of the etroleum gas, air, water etc medium waht the working temperature is lower than 300 centigrade. A41Y-P/R type is used for the equipment and pipeline of the quality with corrosive medium and working temperature lower than 200 centigrade. take for extra pressure devices. Main part material: WCB, SS304 SS316 ETC. Sealling surface material: alloy. A28h type s used for the equipment and pipeline of the air N2, H2 mixed gas vapour etc. medium what the working temperature is less than 200 celsius degree. A28Y-P/10R8 type are used for the equipment and pipeline of the quality whith corrosive medium what the working temperature are less than 200 celsius degree
thaing for extra pressure protect devices. Main part material: WCB, SS304 SS316 ETC.
Sealling surface material: alloy. Standard: API, GB,DIN, JIS, ETC

The appliable tempreture300air ,petro,water etc.on the equipment or pipe,when the
inner stress of the pipe beyond the permission. the valve will open automatically,then
let it out completely ,when the stress reduce to the permission,the valve. will close automatically,guaratee the run of the equipment and pipe. applying to liquiedfield gas tank lorry in railroad and automobile or ground liquefield gas tank to provide over pressure protection. It is mainly Characterized by shifting direct function of spring to indirect function of guide valve. What's more, mian valve applying for sleeve piston&double sealed seat, is characterized by high precilon of action, good recylling function, fas truning back to seat, ability to high-pressure leaking, long working time&security. together with read-justment on line aucomatic turning back to seat after leading again and again, tigh closure operating and main-taining convenience.

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