4 C400N-OSY-FS

Item Number: F0191278
1 1
$9,384.64
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Nominal Size: 4 inch
  • Weight: 500.0 lb
  • Lead Free construction
  • Housing Material: Type 304 (Schedule 40) Stainless Steel
  • Features SentryPlus Alert flood sensor
  • Max Working Pressure: 175 psi
  • ASSE 1013, CSA B64.4, UL, FM Approved
  • Compact and 70% lighter design
  • OSY resilient seated gate valves

Description

The Colt 4 inch C400N-OSY-FS Reduced Pressure Zone Backflow Preventer Assembly is a lead-free device designed to protect potable water systems from contamination due to backsiphonage and backpressure from fire protection substances and non-potable water. Ideal for health hazard cross-connections and continuous pressure piping. It features a durable Type 304 stainless steel housing, OSY shutoff valves, and a SentryPlus Alert flood sensor. The flood sensor, when connected with an add-on kit, detects excessive relief valve discharge and relays alerts via BMS, cellular, or Wi-Fi. It is ASSE 1013, CSA B64.4, UL, and FM Approved, ensuring high reliability for critical applications.

Help Me Connect

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit (sold separately) to activate its alert capabilities.
  • Without a connection kit, the sensor functions as a passive component and will not communicate with external devices.
  • Available connection kit options include integration with Building Management Systems (BMS), cellular communication modules, or the Sensor Control Monitor.
  • The Sensor Control Monitor allows connectivity with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Installation Orientation

  • This assembly is approved for horizontal N-pattern installation. Ensure installation adheres to the direction of the flow arrow for proper operation.
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Additional Details

This Colt 4 inch lead free reduced pressure zone backflow preventer assembly is designed to protect potable water systems from contamination due to reverse flow from fire protection substances and non-potable water. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards.

This assembly prevents backsiphonage and backpressure.

Construction

  • Features a Type 304 (Schedule 40) stainless steel housing and sleeve for durability and corrosion resistance.
  • Includes two independent Link Check modules with torsion springs for easy serviceability.
  • Equipped with resilient seated gate valves with outside stem and yoke (OSY) shutoffs.
  • Groove couplings for easy installation and integral pipeline adjustment.
  • A bottom-mounted pressure relief valve and necessary test cocks are included.
  • Designed for horizontal N-pattern installation.

Flood Detection & Alerts

  • Incorporates a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • When paired with an add-on connection kit (sold separately), the sensor is activated to relay alerts for potential flooding events.
  • Connection kit options allow for integration with BMS, cellular communication, or the Sensor Control Monitor, which enables connectivity with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
  • The OS&Y model includes an option for an integrated supervisory switch on each gate valve.

Key Features

  • Extremely compact design, allowing for smaller enclosures.
  • Up to 70% lighter than traditional designs.
  • Patented link check for lowest pressure loss.
  • Replaceable check disc rubber for extended lifespan.

Specifications

General

  • Product Type: Reduced Pressure Zone Assembly
  • Model: C400N-OSY-FS
  • Nominal Size: 4 inch
  • Configuration: Horizontal N-Pattern Installation
  • Lead Free: Wetted surface contains less than 0.25% of lead by weight.

Materials

  • Housing & Sleeve: Type 304 (Schedule 40) stainless steel
  • Elastomers: EPDM, silicone, and 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)

Certificates & Approvals

  • Approved by the 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
  • UL Classified (OSY Only)
  • FM Approved (OSY Only)
  • NSF Certified to NSF/ANSI 61-G

FAQs

What is the primary function of the Colt 4 inch C400N-OSY-FS backflow preventer?

This assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into potable water systems. It protects against contamination caused by backsiphonage and backpressure in continuous pressure piping applications and health hazard cross-connections.

Is this backflow preventer compliant with lead-free requirements?

Yes, the C400N-OSY-FS is constructed with Lead Free* materials, meaning the wetted surface contains less than 0.25% of lead by weight, complying with Lead Free installation requirements.

How does the SentryPlus Alert flood sensor notify personnel of issues?

The integrated flood sensor with SentryPlus Alert technology detects excessive water discharges from the relief valve. When an add-on connection kit (sold separately) is used, it activates to relay alerts via multi-channel notifications (call, email, text) to personnel about potential flooding.

What are the connectivity options for the flood sensor's alert system?

The flood sensor's alert system can integrate with Building Management Systems (BMS), utilize cellular communication, or connect to the Sensor Control Monitor. The Sensor Control Monitor further enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

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

This assembly is approved by FCCCHR-USC, AWWA C511-97, ASSE 1013, CSA B64.4, UL Classified (OSY Only), FM Approved (OSY Only), and NSF Certified to NSF/ANSI 61-G.

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