Series LF800M4QT Lead Free Anti-Siphon Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of Lead Free cast copper silicon alloy construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, tee handle or lever handle shutoffs, and test cocks for winterization draining. Series LF800M4QT is ideal in health hazard continuous pressure applications such as irrigation systems and industrial process water systems where the water enters the equipment at or below its flood rim. Maximum Pressure:150 psi (10.3 bar), Minimum Pressure: 15 psi (55 kPa).

WATTS® Pressure Vacuum Breaker, Anti-Siphon, Series: 800M4QT, 1/2 in Nominal, 150 psi, 33 to 140 deg F, 7.5 fps, Drain/Blow Down Port, Cast Copper Silicon Alloy Body, 6-1/8 in L x 6-1/4 in H, Domestic

• Replaceable plastic seat
• Easy maintenance of internal parts
• Acetyl bonnet acts as freeze plug to prevent body damage
• O-ring bonnet seal for less possibility of fouling
• Silicone seat disc for durability
• Test cocks positioned for easy testing and winterization
• Compact space saving design
• No special tools required for servicing
• The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight

• Instruction/Installation Manual https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Watts_0387096_Manual.pdf
• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Watts_Water_0792010_Specification_Sheet.pdf