Integrated flood sensor with SentryPlus Alert® technology
AWWA C511-97, ASSE 1013, CSA B64.4 Approved
Lead Free* construction for potable water systems
Description
This 8-inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water supplies from contamination by non-potable substances due to backsiphonage or backpressure. Featuring a durable 304 stainless steel body, OSY resilient seated gate valves with grooved connections, and torsion spring check modules, it ensures reliable performance. An integrated flood sensor with SentryPlus Alert® technology detects excessive relief valve discharge, with optional smart device integration capabilities. Approved for horizontal installation, this assembly complies with AWWA C511-97, ASSE 1013, CSA B64.4, cULus, FM, and NSF standards. Item number F0112114.
Help Me Connect
Connections
The grooved inlet is designed to connect to compatible grooved piping systems.
The grooved outlet is designed to connect to compatible grooved piping systems.
This assembly utilizes OSY (Outside Stem and Yoke) resilient seated gate valves for shutoff.
The flood sensor features SentryPlus Alert® technology, which can be connected to an optional add-on connection kit for extended flood monitoring and integration with BAS or Nexa® platforms.
The Colt™ 8 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly is engineered to prevent the reverse flow of non-potable water and fire protection substances into the potable water supply due to backsiphonage or backpressure.
This assembly is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards, ensuring water safety in commercial and industrial settings.
Design and Components
Features a 304 (Schedule 40) stainless steel body and sleeve with a quick access sleeve for easy maintenance.
Equipped with two independent torsion spring check modules for reliable drip-tight closure and unmatched ease of serviceability.
Includes OSY (Outside Stem and Yoke) resilient seated gate valves with grooved inlet and grooved outlet connections.
A bottom-mounted pressure relief valve provides differential pressure relief.
Lead Free* materials ensure compliance with reduced lead content standards.
Flood Detection and Smart Technology
Integrated flood sensor with SentryPlus Alert® technology detects excessive water discharge from the relief valve.
An add-on connection kit (optional, not included) can extend flood monitoring capabilities.
The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi (connection kit required, not included).
Installation
Approved for horizontal installation, provided the assembly is installed according to the direction of the flow arrow.
Groove couplings facilitate easy installation and pipe alignment.
Specifications
Size: 8 inch
Product Type: Reduced Pressure Zone Backflow Preventer
Model: C400-OSY-GxG-FS
Maximum Working Pressure: 175 psi (12.1 bar)
Temperature Range: 33°F - 140°F (0.5°C - 60°C)
Configuration: Horizontal
Materials
Housing & Sleeve: Type 304 (Schedule 40) stainless steel
Elastomers: EPDM, silicone, and Buna 'N'
Link Checks: Noryl®, stainless steel
Check Discs: Reversible silicone or EPDM
Test Cocks: Lead Free* bronze body
Pins & Fasteners: 300 Series stainless steel
Springs: Stainless steel
Dimensions (Approximate)
Length (A): 49 1/2 inches (1257 mm)
Height (C): 13 3/4 inches (349 mm)
Depth (D): 9 1/2 inches (241 mm)
Relief Valve to Centerline (P): 18 1/4 inches (464 mm)
Weight: 339 lbs (154 kg)
Certificates & Approvals
Approved by the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
AWWA C511-97
ASSE 1013
CSA B64.4
cULus Listed
FM Approved
NSF Certified to NSF/ANSI 61-G
FAQs
What is the primary purpose of this backflow preventer assembly?
This backflow preventer assembly is designed to prevent the reverse flow of non-potable water and fire protection substances into the potable water supply. It protects against contamination caused by backsiphonage or backpressure in continuous pressure piping applications.
What type of valves does this assembly use and how do they connect?
This assembly uses OSY (Outside Stem and Yoke) resilient seated gate valves. Both the inlet and outlet connections are grooved, designed for easy installation and alignment with compatible grooved piping systems.
What advanced features does the flood sensor offer?
The integrated flood sensor features SentryPlus Alert® technology, which detects excessive water discharge from the relief valve. When paired with an optional add-on connection kit, it can relay alerts for potential flooding events and integrate with Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
What are the main materials used in the construction of this backflow preventer?
The housing and sleeve are constructed from Type 304 (Schedule 40) stainless steel. Elastomers include EPDM, silicone, and Buna 'N', while check discs are reversible silicone or EPDM. Test cocks are made from Lead Free* bronze body.
What certifications and approvals does this 8-inch backflow preventer hold?
This assembly is approved by AWWA C511-97, ASSE 1013, CSA B64.4, cULus Listed, FM Approved, and NSF Certified to NSF/ANSI 61-G, ensuring compliance with rigorous industry standards.
