Watts Series 909QTHW Reduced Pressure Zone Backflow Preventer 1" (0387127)

«  ↑  » Watts Series 909QTHW Reduced Pressure Zone Backflow Preventer 1" (0387127) Watts Series 909QT Reduced Pressure Zone Backflow Preventer 1". The Watts 909 Series Reduced Pressure Zone Backflow Preventers are designed to provide superior cross-connection control protection of the potable water supply in accordance with national plumbing codes and containment control for water authority requirements. This series can be utilized in a variety of installations, including health hazard cross-connections in plumbing systems or for containment at the service line entrance. With its exclusive, design incorporating the patented "air-in/water-out" principle it provides maximum relief valve discharge during the emergency conditions of combined back-siphonage and back-pressure with both checks fouled. No. 909-QT, standardly furnished with full port, resilient seated and bronze ball valve shutoffs. 1" (20, 25mm) shutoff has tee handles. FEATURES: Modular design, Replaceable bronze seats, Compact for installation ease, Horizontal or vertical (up or down) installation, No special tools required for servicing. PRESSURE - TEMPERATURE: Model 909QTHW suitable for supply pressures up to 175 psi (12.1 bars) and water temperature from 33°F (5°C) to 210°F (99°C). MATERIALS: Bronze body construction - Model 909 Celcon® check seats, Model 909HW premium-grade stainless steel check seats - premium-grade stainless steel relief valve seats, shafts and flange bolts - ultra-sturdy tight seating, rubber check valve and relief valve assemblies. Bronze body test cocks. 909QTHW has premium-grade stainless steel check modules for hot and harsh water conditions. * Special order item, non cancelable and non returnable.