4 C400-DOSY-FS

Item Number: F0206385
1 1
$9,505.89
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 4 inch
  • Weight: 257.0 lb
  • Housing Material: Type 304 Stainless Steel
  • Valve Type: OSY Resilient Seated Gate Valves
  • Connection Type: Grooved
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 140°F
  • Features SentryPlus Alert® flood sensor
  • Lead Free* construction

Description

This 4 inch Colt C400 Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water systems from contamination caused by backsiphonage and backpressure. It features durable Type 304 stainless steel construction, domestic OSY resilient seated gate valves, and grooved connections for easy installation. An integrated flood sensor with SentryPlus Alert® technology detects excessive relief valve discharge, with optional connection kits for remote notification. This compact, Lead Free* assembly is approved for horizontal installation and suitable for fire protection and other health hazard applications, offering robust protection and advanced monitoring. Item number F0206385.

Help Me Connect

This 4 inch Colt™ C400 Reduced Pressure Zone Backflow Preventer features groove couplings on both the inlet and outlet for straightforward installation and integral pipeline alignment with compatible grooved piping systems. The integrated flood sensor with SentryPlus Alert® technology requires an add-on connection kit (not included) to activate its communication capabilities. These kits allow for integration with Building Management Systems (BMS), cellular networks, or the Sensor Control Monitor for Wi-Fi and Modbus connectivity, enabling remote alerts for potential flood events from the relief valve.

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Additional Details

This Colt™ 4 inch stainless steel reduced pressure zone backflow preventer assembly is designed to protect potable water systems from contamination due to backsiphonage and backpressure, commonly used in health hazard applications for fire protection and other systems.

This extremely compact assembly is lighter than traditional designs and is approved for horizontal installation. It features a robust Type 304 (Schedule 40) stainless steel housing and sleeve, two independent link check modules, a differential pressure relief valve, and two domestic outside stem and yoke (OSY) resilient seated gate valves. Groove couplings ensure easy installation and pipe alignment. The assembly also includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.

Flood Sensor & SentryPlus Alert® Technology

  • Detects excessive water discharges from the relief valve, providing early warning for potential flooding events.
  • Requires an add-on connection kit (not included) to activate the flood sensor for communication.
  • Connection kit options include BMS integration, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Features

  • Extremely compact design allows for use in smaller enclosures.
  • 70% lighter than traditional designs for easier handling and installation.
  • Type 304 (Schedule 40) stainless steel housing and sleeve for durability.
  • Groove couplings for easy installation and integral pipeline adjustment.
  • Patented link check modules with torsion springs for lowest pressure loss and ease of serviceability.
  • Domestic outside stem and yoke (OSY) resilient seated gate valves are drip-tight.
  • Includes an integrated supervisory switch as an option on each OSY gate valve.
  • Lead Free* construction: wetted surface contains less than 0.25% lead by weight.

Specifications

General

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Size: 4 inch
  • Housing & Sleeve Material: Type 304 (Schedule 40) Stainless Steel
  • Valve Type: Domestic Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
  • Connection Type: Grooved Inlet x Grooved Outlet
  • Configuration: Horizontal
  • Lead Content: Lead Free* (wetted surface contains less than 0.25% of lead by weight)

Performance

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

Materials of Construction

  • 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)
  • Approved By: AWWA C511-97
  • Certified To: ASSE 1013
  • Certified To: CSA B64.4
  • Approved By: cULus FM Approved (OSY)
  • Certified To: NSF/ANSI 61-G

FAQs

What is the primary purpose of this backflow preventer?

This 4 inch Colt C400 Reduced Pressure Zone Backflow Preventer is designed to protect potable water systems from contamination by preventing the reverse flow of non-potable substances due to backsiphonage or backpressure.

What type of gate valves are included with this assembly?

The assembly includes two domestic Outside Stem and Yoke (OSY) resilient seated gate valves, which are UL Classified and FM Approved. These valves are drip-tight for reliable shutoff.

How does the flood sensor work, and what is required to activate it?

The integrated flood sensor uses SentryPlus Alert® technology to detect excessive water discharges from the relief valve. To activate its communication capabilities for alerts, an add-on connection kit (sold separately) is required.

What type of connections does this backflow preventer use?

This backflow preventer features grooved couplings on both the inlet and outlet, designed for easy installation and alignment with compatible grooved piping systems.

What materials are used in the construction of this backflow preventer?

The housing and sleeve are made from Type 304 (Schedule 40) stainless steel. Other components include Noryl® and stainless steel link checks, EPDM and silicone elastomers, and Lead Free* bronze for the test cocks.

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