8 LF880W-LG RP-FS
Item Number: F8007372Brand - Febco
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- 8 inch nominal size
- Weight: 618.0 lb
- Lead Free Reduced Pressure Zone (RPZ) backflow preventer
- Ductile iron body with ArmorTek® coating
- Stainless steel relief valve seat and check components
- Integrated flood sensor with SentryPlus Alert® technology
- Maximum Working Pressure: 175 psi
- Temperature Range: 33°F - 140°F
- Designed for N-pattern competitor drop-in replacement
Description
Description
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This 8 inch MasterSeries® LF880W-LG RP-FS assembly is designed for drop-in replacement of competitor's N-pattern valves due to its longer gate-to-gate length. It comes with flanges compliant to ASME B16.1 Class 125 and AWWA Class D Flange for connection to the main potable water supply.
The integrated flood sensor requires an add-on connection kit (sold separately) to activate and communicate alerts for potential flooding events. Connection kit options include BMS, cellular communication, or the Sensor Control Monitor which enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
This assembly is supplied without shutoff valves (LG), meaning isolation shutoffs will need to be provided separately for installation.

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Additional Details
This 8 inch lead free MasterSeries® Reduced Pressure Zone (RPZ) backflow preventer assembly is designed to protect potable drinking water systems from contamination by high hazard (toxic) fluids in industrial installations and applications.
It features a longer gate-to-gate length for drop-in replacement of competitor’s N-pattern valves and is supplied without shutoff valves.
Key Features
- Lead Free construction to comply with low lead installation requirements
- Designed for drop-in replacement of competitor's N-pattern valves due to longer gate-to-gate length
- Durable ductile iron valve body design with ArmorTek® coating for corrosion resistance of internal and external surfaces
- Stainless steel relief valve seat and stainless steel check components for maximum performance and durability
- Integrated flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve
- Inline serviceable assembly; no special tools required
- Supports vertical up or vertical down N-pattern installation
- Captured modular spring assembly; clapper check assembly
- Reversible and replaceable discs
- Field replaceable seats
- Modular and repairable pressure differential relief valve
Flood Sensor Details
- The flood sensor relays a signal that triggers a multichannel alert (call, email, text) to notify personnel about potential flooding.
- An add-on connection kit (sold separately) is required to activate the flood sensor.
- Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
Important Warnings
- An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component that does not communicate with any other device.
- Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide proper drainage in the event of a discharge.
- Watts® is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation.
- The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product. Inquire with governing authorities for local installation requirements.
Specifications
- Size: 8 inch
- Configuration: Lead Free Reduced Pressure Zone (RPZ) Assembly
- Shutoff Valves: Less shutoff valves (LG)
- Main Valve Body Material: Ductile iron Grade 65-45-12
- Relief Valve Body Material: Ductile iron Grade 65-45-12
- Coating: ArmorTek powder coating, applied to internal and external surfaces
- Check Seats Material: Stainless steel
- Relief Valve Seat Material: Stainless steel
- Disc Holder Material: Stainless steel
- Elastomer Disc Material: Silicone
- Spring Material: Stainless steel
- Clamp Standard: AWWA C606
Performance
- Maximum Working Pressure: 175 psi (12.1 bar)
- Minimum Working Pressure: 20 psi (1.4 bar)
- Hydrostatic Test Pressure: 350 psi (24.1 bar)
- Hydrostatic Safety Pressure: 700 psi (48.3 bar)
- Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) continuous
- Flow Orientation: Vertical up or vertical down N-pattern
Certificates & Approvals
- Approved by the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR USC)
- ASSE 1013 Listed
- UL Classified (US & Canada)
- FM Approved
- IAPMO/CUPC
- AWWA Standard C511 Compliant
- CSA B64.4
- NSF/ANSI 61-G Certified
- End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange