2.5 C400N-BFG-FS
Item Number: F0191416
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Brand - Ames
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- Size: 2 1/2 inch
- Weight: 86.2 lb
- Type: Reduced Pressure Zone Backflow Preventer
- Housing Material: 304 Stainless Steel
- Valve Type: Grooved Gear Operated Butterfly Valves with Tamper Switch
- Flood Detection: Integrated Flood Sensor with SentryPlus Alert® Technology
- Maximum Working Pressure: 175 PSI
- Temperature Range: 33°F - 140°F
- Installation: Horizontal N Pattern
Description
Description
The Colt 2 1/2 inch C400N Reduced Pressure Zone Backflow Preventer Assembly protects potable water supplies from contamination due to backpressure or backsiphonage in fire protection systems. It features a durable 304 stainless steel housing, grooved gear operated butterfly shutoff valves with tamper switches, and an integrated flood sensor with SentryPlus Alert technology for discharge detection. Constructed with Lead Free* materials, this compact unit offers reliable performance for continuous pressure piping applications and is approved for horizontal N-pattern installation. Item number F0191416.
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Connection Information
- This assembly features groove end connections for easy installation into piping systems.
- It is approved for horizontal N pattern installation and must be installed in accordance with the direction of the flow arrow to ensure proper function.
- The integrated supervisory switch has continuity when the valve is fully open and activates within two turns from open, sending a tamper signal when the valve is closed or the switch is removed.

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Additional Details
This Colt 2 1/2 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards due to backsiphonage and/or backpressure.
Key Components & Design
- Features two independent Link Check modules and a differential pressure relief valve.
- Includes two drip tight shutoff valves and required test cocks.
- Constructed with a 304 (Schedule 40) stainless steel housing and sleeve for durability.
- Utilizes grooved gear operated butterfly valves with tamper switch for reliable operation.
- Extremely compact design allows for installation in small enclosures.
- Torsion spring check modules provide ease of serviceability.
- Groove couplings enable easy installation and pipe alignment.
- Approved for horizontal N pattern installation.
Integrated Technology
- Equipped with a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
- An add-on sensor connection kit can extend flood monitoring capabilities.
- The optional Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
Specifications
- Product Type: Reduced Pressure Zone Backflow Preventer
- Nominal Size: 2 1/2 inch
- Housing & Sleeve Material: Type 304 (Schedule 40) stainless steel
- Elastomers: EPDM, silicone, Buna 'N'
- Link Checks Material: Noryl®, stainless steel
- Check Discs: Reversible silicone or EPDM
- Test Cocks Material: Lead Free* bronze body
- Pins & Fasteners Material: 300 Series stainless steel
- Springs Material: Stainless steel
- Configuration: Horizontal N pattern
- Valve Type: Grooved Gear Operated Butterfly Valves with Tamper Switch
- Flood Detection: Integrated Flood Sensor
- Maximum Working Pressure: 175 psi (12.1 bar)
- Temperature Range: 33°F - 140°F (0.5°C ~ 60°C)
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
- UL Classified
- FM Approved
- NSF/ANSI 61-G Certified
FAQs
Q: What is the primary purpose of this backflow preventer?
A: This backflow preventer is designed to prevent the reverse flow of non-potable water or fire protection substances into the potable water supply, protecting against contamination due to backsiphonage and backpressure.
Q: What type of connections does this assembly use?
A: The assembly features groove end connections, designed for easy and efficient installation and alignment with existing piping systems.
Q: Does this backflow preventer include flood detection capabilities?
A: Yes, it is equipped with an integrated flood sensor featuring SentryPlus Alert® technology to detect excessive water discharge from the relief valve, with optional add-on kits for enhanced monitoring.
Q: What materials are used in the construction of the housing?
A: The housing and sleeve are constructed from durable Type 304 (Schedule 40) stainless steel, and it features Lead Free* bronze body test cocks.
Q: What are the maximum operating pressure and temperature?
A: This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and an operating temperature range of 33°F to 140°F (0.5°C to 60°C).