Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China non return valve manufacturer and distributor of valves, hoses, tubes and pipes. Our oem non return 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.

Positive shut off. Longer life. Quick in action. No lubrication. Visual on / off indication
Compact design. Corrosion resistant. Low pressure drop. Simplicity
Used to stop floods in the event of power cuts where drains are below water level. Very important these are not 100% ball valves (normally 95%), also they will only work if regularly cleaned. PLEASE NOTE all our pipe is fully fish safe and has been used by us for many years, all joints are glue fittings using standard 'solvent weld' glue available from us or most DIY shops. All our pipework is metric and directly compatible with all European pipe such as VDL, it is also directly compatible with Aqua Medic Deltec Surchan and almost all European equipment. It will not fit directly onto most U.K. sourced pipework without a metric to imperial adaptor. If you are in any doubt please contact us for advice.

The valve is available in carbon steel or stainless steel with PTFE, Viton or metal to metal seats. Sizes range from DN8 to DN50 reduced bore and DN8 to DN40 full bore.
The straight-through flow, compact design and ease of servicing makes the 'Checktite' the natural choice for many applications. It is particularly suitable for hydrocarbon and chemical process lines. Three piece construction makes installation quick and simple. Valve body swings away for ease of maintenance or cleaning. Wide range of end connectors. (Screwed or weld). Exceptionally low cracking pressure and pressure drop. Available with virgin PTFE, Viton? and metal to metal seating. Bubble tight shut off (0.7bar.g Viton?, 6.9bar.g PTFE)
Optional clack springs available for vertical installations and critical water hammer conditions. BS EN 10204:2004 (3.1.b) certification available.

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