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

Small in size and light in weight, easy instillation and maintenance. It can be mounted wherever needed2. Simple and compact construction, quick 90 degrees on-off operation3. Minimized operating torque, energy saving4. Flow curve teeing to straight line, excellent regulation performance5. Long service life, standing the test of tens of thousands opening/closing operations6. Bubbles-tight sealing with no leakage under the pressure test7. Wide selection of materials, applicable to various mediumsWafer type butterfly valve: Designed according to BSEN593 and MSS SP-67 and API 609 and compatible with ANSI 125/150, BS4504, DIN PN10/PN16 flangesSize: DN40-350mmRating: PN10/16, ANSI125/150Material of main parts: Body: cast iron, ductile iron, stainless steel, cast steel (WCB)Disc: Monel, ductile iron, stainless steel, Al-bronze, ductile iron with nylon coatedSeat: EPDM or NBR or PTFE or VITON or vulcanized in bodyStem: SS416 or SS316 or MonelPin: SS316 or MonelOperated: handle or wormgear, pneumatic, electric actuator.

Butterfly Valve, Size 1/2 In, NPT Connection, Rated For 175 PSI, Full Port, Material of Construction Bronze, Viton Seats, Stem Material Stainless Steel, Lever Handle, Temp Range 30 To 275 F, Overall Length 1.88 In
The valve has been designed for the fastest response and to ensure maximum boost for the professional competitor. It is supplied in a kit that allows you to customise the response characteristics to your engine whilst ensuring that the boost pressure is high just when you need it. Combining diaphragm technology with Aerospace standards of engineering the DV-R wont be the only winner on the track.Please note - This valve is not suitable for high boost applications.The DV-R kit includes:-One DV-R fast response valve -Three alternative springs to match the valve to your engine -Two spare diaphragms -All the necessary hose clamps -Installation instructions and set-up guide. Ensuring the utmost attention to detail every part number is inspected and cross-checked for quality control purposes throughout the entire manufacturing process.

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