1.5 975 RP, FNPT X FNPT, BUTTERFLY SHUTOFF, SUPERVISORY SWITCH
Item Number: 112-975XLBFSS
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Brand - Wilkins
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- Size: 1.5 inch
- Type: Reduced Pressure (RP) Backflow Preventer
- Inlet Connection: 1.5 inch FNPT
- Outlet Connection: 1.5 inch FNPT
- Integrated butterfly shutoff valves
- Includes supervisory switch for valve monitoring
- Protects against backpressure and backsiphonage
Description
Description
This 1.5 inch Reduced Pressure (RP) backflow preventer is designed for high-hazard applications to prevent contamination of potable water lines. It features 1.5 inch FNPT (Female National Pipe Taper) threaded connections on both the inlet and outlet for direct pipe installation. The unit includes integral butterfly shutoff valves for isolation and a supervisory switch to monitor the open or closed position of these valves, ensuring system integrity. This robust device protects against both backpressure and backsiphonage conditions.

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Additional Details
This is a 1.5 inch Reduced Pressure (RP) backflow preventer featuring FNPT x FNPT connections, designed to protect potable water supplies from contamination.
It includes integral butterfly shutoff valves and a supervisory switch for monitoring valve positions.
Key Features
- Reduced Pressure Principle Assembly: Provides high hazard protection against backpressure and backsiphonage.
- FNPT x FNPT Connections: Female National Pipe Taper threaded connections on both inlet and outlet.
- Butterfly Shutoff Valves: Integral shutoff valves on the inlet and outlet to isolate the device for maintenance or testing.
- Supervisory Switch: Monitors the position of the shutoff valves, providing an alert if a valve is not fully open.
Specifications
- Size: 1.5 inch
- Device Type: Reduced Pressure (RP) Backflow Preventer
- Inlet Connection: 1.5 inch FNPT
- Outlet Connection: 1.5 inch FNPT
- Shutoff Valves: Butterfly type
- Monitoring: Supervisory switch
Certificates & Approvals
- No specific certifications provided in source material.
FAQs
What is the primary purpose of this 1.5 inch backflow preventer?
Its primary purpose is to protect the potable water supply from contamination due to backpressure or backsiphonage, particularly in high-hazard installations.
What type of connections does this backflow preventer use?
This unit features 1.5 inch FNPT (Female National Pipe Taper) connections on both the inlet and outlet, designed for direct threaded pipe installation.
What is the function of the integral butterfly shutoff valves?
The integral butterfly shutoff valves allow for complete isolation of the backflow preventer, which is necessary for maintenance, testing, or system repairs without disrupting the entire water line.
What does the supervisory switch monitor?
The supervisory switch monitors the position of the integral butterfly shutoff valves. It is designed to signal if a valve is not in its fully open position, indicating a potential issue or unauthorized closure.
Is this device suitable for all backflow prevention needs?
This is a Reduced Pressure (RP) backflow preventer, which is designed for high-hazard applications where the water quality could be a significant health risk if contaminated. It is suitable for protecting against both backpressure and backsiphonage.