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> 18) watts backflow preventor anti siphon 1/2" 008QT
18) watts backflow preventor anti siphon 1/2" 008QT
Designed for indoor point of use applications to prevent back-siphonage of contaminated water back into the potable water supply. Separation of the water supply from the air inlet is accomplished by means of a diaphragm seal. This feature protects against any spillage during start-up or operation.
* Standardly supplied with Tee handles
* Available less Tee handle with stem wrench flats. For use where space is limited
* Available in left-handed or right-handed outlet
* Spill-resistant design for indoor use
* Modular cartridge for ease of service
* Vent uses an o-ring for reliable operation
* Bronze body for durability
* Compact space saving design
The SVB is designed to be installed at the point of use. When factory installed deck/machine mounted on machines or equipment, the critical level of the SVB shall be not less than 1" (25mm) above the flood rim. If field applied for general plumbing applications, the critical level of the SVB shall be a minimum of 6" above the flood rim.
A spill-resistant vacuum breaker (SVB) shall be installed, in accordance with the manufacturer's instructions, as noted on the plans. The valve shall consist of a one piece modular check and float assembly made of engineered thermoplastic and housed in a bronze body. Springs shall be stainless steel. The valve shall be constructed with a molded diaphragm separating the air inlet from the potable water supply to prevent spillage. The valve shall be a Watts SVB Series 008QT.
Check Disc - Silicone Rubber
Assembly Drawing Assembly Drawing
ASSE 1056; IAPMO Classified
Working Temp: 33 - 180 F (1 - 83 C)
Max Pressure: 150 psi (10.34 bars) - Min Pressure: 8 psi (55.2 kPa)
Female NPT - Ball Valve shut-offs.
Hose and Custom Connections
As compliled from documented Foundation for Cross-Connection Control and
Hydraulic Research at the University of Southern California lab tests.
*Typical maximum system flow rate (7.5 feet/sec.)
