8 C400-NRS-FS

Item Number: F0191292
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$22,061.22
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 8 inch
  • Weight: 591.0 lb
  • Housing Material: Type 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: Non-rising stem (NRS) resilient seated gate valves
  • Flood Detection: SentryPlus Alert® technology flood sensor
  • Lead Free Construction: Yes (< 0.25% lead by weight)
  • Maximum Working Pressure: 175 psi
  • Installation: Horizontal configuration
  • Design: Extremely compact and lightweight

Description

The Ames Colt C400-NRS-FS is an 8 inch stainless steel reduced pressure zone backflow preventer assembly designed to protect potable water systems from contamination due to backsiphonage or backpressure. It features a durable Type 304 stainless steel housing, non-rising stem shutoff valves, and an integrated flood sensor with SentryPlus Alert® technology for discharge detection (requires an add-on connection kit for active alerts). This compact and lightweight unit is approved for horizontal installation, with a maximum working pressure of 175 psi. It complies with Lead Free* requirements and is ASSE 1013, AWWA C511-97, CSA B64.4, UL, FM, and NSF/ANSI 61-G approved.

Help Me Connect

Flood Sensor Connectivity

  • To activate the integrated flood sensor with SentryPlus Alert® technology, an add-on connection kit is required. Without this kit, the sensor operates passively and will not communicate.
  • Connection kit options allow for integration with various systems including BMS, cellular communication, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi.

Pipe Connections

  • This assembly utilizes groove couplings for straightforward installation and integral pipeline adjustment, connecting to compatible grooved piping systems.
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Additional Details

The Ames Colt C400-NRS-FS 8 inch stainless steel reduced pressure zone backflow preventer assembly prevents reverse flow of contaminated water into the potable water supply due to backsiphonage or backpressure.

This compact and lightweight assembly is approved for horizontal installation and features a flood sensor with SentryPlus Alert® technology to detect excessive relief valve discharges.

Construction & Design

  • Features a Type 304 (Schedule 40) stainless steel housing and sleeve for corrosion resistance.
  • Includes two independent torsion spring check modules for low pressure loss and ease of serviceability.
  • Equipped with non-rising stem (NRS) resilient seated gate valves for drip-tight shutoff.
  • Contains a corrosive resistant stainless steel bottom mounted pressure relief valve.
  • Extremely compact design, up to 70% lighter than traditional designs.
  • Groove couplings for easy installation and pipeline adjustment.
  • Replaceable check disc rubber for extended service life.

Flood Detection & Alerting

  • Integrated flood sensor with SentryPlus Alert® technology detects continuous discharge from the relief valve.
  • Requires an add-on sensor connection kit for activation and communication to relay alerts for potential flooding events.
  • Connection kit options include BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
  • 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

General

  • Size: 8 inch
  • Model: C400-NRS-FS
  • Application: Reduced Pressure Zone (RPZ)
  • Configuration: Horizontal
  • Lead Free Compliant: Yes (wetted surface contains less than 0.25% lead by weight)

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

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)

Dimensions & Weight (NRS)

  • Length (A): 49 3/4 inch (1264 mm)
  • Height (C): 37 3/4 inch (959 mm)
  • Depth (D): 19 15/16 inch (506 mm)
  • Centerline to G: 9 11/16 inch (246 mm)
  • Centerline to H: 54 1/8 inch (1375 mm)
  • Centerline to J: 40 1/8 inch (1019 mm)
  • Centerline to M: 27 7/16 inch (697 mm)
  • Centerline to P: 15 11/16 inch (399 mm)
  • Weight: 483 lb (219 kg)

Certificates & Approvals

  • ASSE 1013
  • AWWA C511-97
  • CSA B64.4
  • FM Approved
  • NSF Certified to NSF/ANSI 61-G
  • UL Classified
  • Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC) (Excluding 6" Z-pattern configuration)

FAQs

What is the primary purpose of the Ames Colt C400-NRS-FS backflow preventer?

Its primary purpose is to protect potable water systems from contamination by preventing the reverse flow of non-potable water caused by backsiphonage or backpressure. This ensures the safety and purity of the drinking water supply.

Is the flood sensor immediately active and able to send alerts upon installation?

No, the flood sensor is a passive component without an add-on connection kit. An additional connection kit, offering options like BMS, cellular, or Wi-Fi integration via the Sensor Control Monitor, is required to activate the sensor and enable alert notifications.

What type of shutoff valves does the C400-NRS-FS model utilize?

This model is equipped with non-rising stem (NRS) resilient seated gate valves. These valves provide reliable drip-tight shutoff capabilities and are a key component of the assembly.

What material is the main housing and sleeve of this backflow preventer made from?

The housing and sleeve are constructed from durable Type 304 (Schedule 40) stainless steel. This material provides excellent corrosion resistance and contributes to the assembly's longevity.

What are the key certifications and approvals for this 8 inch backflow preventer?

This backflow preventer is approved by ASSE 1013, AWWA C511-97, CSA B64.4, UL Classified, FM Approved, and NSF Certified to NSF/ANSI 61-G. It also meets Lead Free* construction requirements.

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