Watts 3/4" 9DM2 Double Check Valve

Watts 0061983 3/4" Vacuum Breaker This 3/4 inch hose connection vacuum breaker permits the attachment of portable hoses to hose thread faucets and prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a brass body construction, stainless steel working parts, a rubber diaphragm and disc, a draining stem, and a break-away set screw for tamper resistant installations. It is ideal for inside and outside, health hazard installations requiring non-continuous pressure such as service sinks, swimming pools, photo developing ...

4" T-312 Ductile Iron Wafer Check Valve, Stainless Steel Disc Features: Dual spring-loaded discs assure quick, silent closure Elastomer seats create a positive seal against backflow Can be installed vertically or horizontally, in any orientation Durable ductile iron body is designed to install easily between Class 125/150 companion flanges The compact body design is lighter and requires less installation space as compared to traditional flanged swing check valves The split-disc, center-torsional spring design minimizes pressure drop Working Pressure, Non-Shock (PSI): Cold working pressure ...

3" FNPT In-Line Brass Check Valve with Buna-N Rubber Poppet. The unique poppet design is more durable than an o-ring, because of its solid steel internal insert. Product is Made in the USA. Maximum working pressure 200 psi, Maximum temperature 225°F, Cracking pressure 1-2 lbs. For use with oil, diesel fuel, kerosene, mineral oil, alcohol, and hydraulic fluids. Not for air compressor use.

3" T-311 Cast Iron Swing Check Valve Features: Swing-check design is ideal for all basic commercial/industrial general backflow prevention applications Durable cast iron construction resists pipeline stresses and distortion IBBM design: Iron-body-bronze-mount, with bronze body seat and flapper-disc sealing rings. The pliable rings provide an improved seal over plain iron-on-iron designs Class 125/150 full-face flange-type end connections All external surfaces are primed and painted for corrosion resistance Can be installed in either vertical (upward flow only) or horizontal (cover ...

The 350 double check backflow preventer provides low health hazard protection in non-potable applications. The EZSwap™ removable pressure vessel provides safe and easy line flushing, quick winterization, and simple maintenance and repair. Features: EZSwap™ removable pressure vessel is quickly removed and replaced with flush tool (flush) for simple line flushing to remove fouling debris Labor savings from ease of flushing with only one person saves up to 15 minutes per installation Quick and thorough winterization with blow-out Accessory prevents costly freeze damage and improves ...