Series 009 Reduced Pressure Zone Assemblies
SIZE RANGE: 1/2" through 3".
Series 009 Reduced Pressure Zone Assemblies are designed to protect potable water supplies in accordance with national plumbing codes and water authority requirements. This series features two in-line, independent check valves, captured springs and replaceable check seats with an intermediate relief valve. Its compact modular design facilitates easy maintenance and assembly access. Sizes 1⁄4" – 1" (8 – 25mm) shutoffs have tee handles.
Pressure / Temperature
Series 009 1⁄4" – 2" (8 – 50mm) is suitable for supply pressure up to 175psi (12 bars). Water temperature: 33°F – 180°F (-3°C – 75°C).
Sizes 21⁄2" and 3" (65 and 80mm) are suitable for supply pressures up to 175psi (12 bars) and water temperature at 110°F (43°C) continuous, 140°F (60°C) intermittent.
009 Data Sheet (pdf), 919 Data Sheet (pdf),

Series 995 Reduced Pressure Zone Assemblies
SIZE RANGE: 1/2" through 1½".
Series 995 Copper Body Reduced Pressure Zone Assemblies are designed to protect the potable water supply in accordance with national plumbing codes and water authority requirements. Series 995 features two in-line, independently operating modular check valves, a bottom mounted hydraulically operated differential relief valve, two ball valve shutoff valves, four test cocks, and is serviceable without the use of special tools.
Pressure / Temperature
Temperature Range: 33°F – 180°F (5°C – 75°C) continuous
Maximum Working Pressure: 175psi (12.06 bars)
995 Data Sheet (pdf)

Series 909QT Reduced Pressure Zone Assemblies
SIZE RANGE: 3/4" through 2".
Series 909 Reduced Pressure Zone Assemblies 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.With its exclusive, design incorporating the patented "air-in/water-out" principle it provides maximum relief valve discharge during the emergency conditions of combined backsiphonage and backpressure with both checks fouled. Model 909-QT, standardly furnished with full port, resilient seated and bronze ball valve shutoffs. Sizes 3/4" and 1" (20, 25mm) shutoffs have T handles..
Series 909 Reduced Pressure Zone Assemblies
SIZE RANGE: 2½" through 10".
Series 909 Reduced Pressure Zone Assemblies are designed to provide crossconnection control protection of the potable water supply in accordance with national plumbing codes. With its exclusive patented relief valve design incorporating the “air-in/water-out” principle, it provides substantially improved relief valve discharge performance during the emergency conditions of combined backsiphonage and backpressure with both checks fouled.
Pressure / Temperature
Temperature Range: 33°F – 180°F (5°C – 75°C) continuous, Maximum Working Pressure: 175psi (12.06 bars)
909QT Data Sheet (pdf) -909 Data Sheet (pdf)

Series 994 Reduced Pressure Zone Assemblies
SIZE RANGE: 2½" through 10".
Series 994 Reduced Pressure Zone Assemblies are designed to provide protection of the potable water supply in accordance with national codes. This series can be used where approved by the local authority having jurisdiction on health hazard cross-connections. Series 994 features a short lay length, lightweight stainless steel body, corrosion resistant stainless steel relief valve, and patented torsion spring check valves.
Pressure / Temperature
Temperature Range: 33°F – 110°F (5°C – 43°C) continuous
Maximum Working Pressure: 175psi (12.06 bars)
994 Data Sheet (pdf)

Series 957 Reduced Pressure Zone Assemblies
SIZE RANGE: 2½" through 10".
Watts SilverEagle Series are the lightest and most compact backflow prevention assemblies in the industry.
Series 957/957N/957Z Reduced Pressure Zone Assemblies provide protection to the potable water system from contamination in accordance with national plumbing codes. Series 957/957N/957Z are normally used in health hazard applications for protection against backsiphonage or backpressure.

Pressure / Temperature
Temperature Range: 33°F – 140°F (5°C – 60°C)
Maximum Working Pressure: 175psi (12.06 bars)

Series 994HMB Portable Hydrant Meter backflow Preventers
SIZE RANGE: 2½' to 7NST x 3".
Model 994HMB Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted water from entering into the potable water supply where flow is in one direction and the possibility of cross-connections exists, such as at a fire hydrant or other non-permanent installation. It consists of a stainless steel body construction with stainless steel internal parts, meter housing, measuring element, and permanently sealed register to measure flow and protect the meter and backflow preventer from damage due to excessive flow. Series 994HMB meets AWWA C701 meter requirements and is ideal for use in existing hydrant meter hookups. Factory assembled and tested.