6 C400-NRS-FS
Item Number: F0191291Brand - Ames
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- Size: 6 inch
- Weight: 308.0 lb
- Lead Free* construction
- Housing Material: Type 304 (Schedule 40) Stainless Steel
- Gate Valve Type: Non-rising stem resilient seated
- Flood Sensor: Included on relief valve
- Maximum Working Pressure: 175 psi
- Temperature Range: 33°F - 140°F
- Approvals: ASSE 1013, CSA B64.4, NSF 61-G
Description
Description
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Flood Sensor Connectivity
- The integrated flood sensor detects excessive water discharge from the relief valve.
- An add-on connection kit is required to activate the flood sensor's alert features.
- Without the connection kit, the flood sensor functions as a passive component and will not communicate with external devices.
- Connection kit options may include integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi, or cellular communication.
Installation Orientation
- This assembly is approved for horizontal installation, and can also be configured for N-pattern or Z-pattern horizontal installations.

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Additional Details
The Colt™ 6 inch stainless steel reduced pressure zone backflow preventer assembly protects potable water systems from contamination due to backsiphonage and backpressure, suitable for health hazard applications.
This C400 Series assembly features a compact, Lead Free* design and includes a flood sensor to detect excessive water discharge from the relief valve.
Key Features
- Lead Free* construction complies with installation requirements (wetted surface contains less than 0.25% of lead).
- Includes a flood sensor on the relief valve to detect continuous water discharges.
- Flood alert feature activated with an add-on sensor connection kit.
- Designed for horizontal or N-pattern installation.
- Extremely compact design and 70% lighter than traditional models.
- Unmatched ease of serviceability.
- Groove fittings for integral pipeline adjustment.
- Patented link check for lowest pressure loss.
- Replaceable check disc rubber.
- Housing and sleeve constructed from Type 304 (Schedule 40) stainless steel.
- Equipped with non-rising stem resilient seated gate valves.
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. Proper drainage must be provided in the event of a discharge.
Specifications
- Product Type: Reduced Pressure Zone Backflow Preventer
- Nominal Size: 6 inch
- SKU: F0191291
- Brand: Ames Fire & Waterworks (A Watts Brand)
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
Performance
- Temperature Range: 33°F - 140°F (0.5°C - 60°C)
- Maximum Working Pressure: 175 psi (12.1 bar)
Configurations
- Installation Pattern: Horizontal, N-pattern horizontal, Z-pattern horizontal
- Valve Type: Non-rising stem resilient seated gate valves
- Flood Detection: Sensor on relief valve for flood detection
Certificates & Approvals
- Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (FCCCHR-USC) (Excluding 6" Z-pattern configuration)
- AWWA C511-97
- ASSE 1013
- CSA B64.4
- NSF Certified to NSF/ANSI 61-G
Dimensions & Weight (6 inch NRS)
- Overall Length (A): 43 1/2 inches (1105 mm)
- Height (C): 30 1/8 inches (765 mm)
- Inlet to Outlet Center (J): 35 1/4 inches (895 mm)
- Weight: 317 lbs (144 kg)
FAQs
What is the primary purpose of the Colt C400 backflow preventer?
What type of valves does this 6-inch C400 assembly use?
How does the flood sensor work and what is required to activate it?
What materials are used for the main housing and internal components?
What are the primary approvals and certifications for this backflow preventer?
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