The Colt 4 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly (C400-BFG-FS) provides critical protection for potable water systems against backsiphonage and backpressure contamination. Featuring durable Type 304 stainless steel housing and grooved gear operated butterfly valves with tamper switches, this assembly ensures reliable performance. It includes a SentryPlus Alert flood sensor to detect relief valve discharge, enhancing safety and monitoring. Approved for horizontal installation, it is ideal for health hazard cross-connections in continuous pressure piping applications. Item number F0692865.
Help Me Connect
Connections
This 4 inch reduced pressure zone assembly features grooved fittings for integral pipeline adjustment and simplified installation.
The assembly is equipped with grooved gear operated butterfly valves.
It is approved for horizontal installation, ensuring proper function when installed with the direction of the flow arrow.
Flood Sensor Activation
An add-on sensor connection kit is required to activate the flood sensor's alert features for remote monitoring.
Connection kit options include interfaces for BMS, cellular communication, and Wi-Fi via the Nexa® platform or RS-485 Modbus.
This Colt 4 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage and backpressure. It is ideal for health hazard applications and continuous pressure piping, approved for horizontal installation.
This assembly includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. An add-on connection kit is required to activate the flood sensor for remote alerts.
Construction & Features
4 inch nominal pipe size
Extremely compact design, 70% lighter than traditional designs
Housing and sleeve constructed from Type 304 (Schedule 40) stainless steel
Grooved gear operated butterfly shutoff valves with tamper switch
Torsion spring check modules for ease of serviceability
Patented link check for lowest pressure loss
Reversible silicone or EPDM check disc rubber
Lead Free* bronze body test cocks
Flood alert feature with add-on sensor connection kit for remote notifications (BMS, cellular, Wi-Fi via Nexa® platform or RS-485 Modbus)
Note: An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component and will not communicate with any other device.
Specifications
Product Type: Reduced Pressure Zone Backflow Preventer Assembly
Nominal Size: 4 inch
Model: C400-BFG-FS
Brand: Colt by Ames Fire & Waterworks
Lead Free: Yes (Wetted surface contains less than 0.25% lead by weight)
Configuration: Horizontal, N-Pattern, Z-Pattern
Maximum Working Pressure: 175 PSI (12.1 bar)
Temperature Range: 33°F - 140°F (0.5°C - 60°C)
Materials
Housing & Sleeve: Type 304 (Schedule 40) Stainless Steel
Elastomers: EPDM, Silicone, 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
Certificates & Approvals
Approved by Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
AWWA C511-97
ASSE 1013
CSA B64.4
UL Classified
FM Approved
NSF Certified to NSF/ANSI 61-G
FAQs
What is the primary function of the Colt C400-BFG-FS backflow preventer?
Its primary function is to prevent reverse flow and contamination of potable water systems from non-potable substances, addressing both backsiphonage and backpressure scenarios in health hazard applications.
What does 'Lead Free' construction mean for this product?
Lead Free construction indicates that the wetted surface of this product, which comes into contact with consumable water, contains less than 0.25% lead by weight, complying with Lead Free installation requirements.
How does the flood sensor work, and what is required to activate it?
The integrated flood sensor with SentryPlus Alert technology detects excessive water discharges from the relief valve. To activate the sensor to relay alerts (call, email, text), an add-on connection kit must be purchased separately. Without the kit, the sensor is passive.
What type of shutoff valves are included with this assembly?
This assembly is equipped with grooved gear operated butterfly valves that feature an integrated tamper switch, ensuring secure and monitored shutoff capabilities.
What are the approved installation orientations for this backflow preventer?
This assembly is approved for horizontal, N-pattern, and Z-pattern horizontal installations, provided it is installed in accordance with the direction of the flow arrow and local codes.
