4 C400-OSY-FS

Item Number: F0191272
1 1
$8,413.75
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: 257.0 lb
  • Lead-Free Construction: <0.25% lead in wetted surfaces
  • Housing Material: Type 304 (Schedule 40) stainless steel
  • Includes Flood Sensor with SentryPlus Alert® Technology
  • Max Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)
  • Agency Approvals: ASSE 1013, CSA B64.4, UL, FM, NSF 61-G, AWWA
  • Design Features: Compact, 70% lighter, groove couplings, easy serviceability

Description

This Colt 4 inch lead-free reduced pressure zone backflow preventer assembly (C400-OSY-FS) safeguards potable water systems from contamination due to backsiphonage and backpressure, suitable for health hazard applications. It features a Type 304 stainless steel housing, grooved connections, and resilient seated OS&Y gate valves. The integrated flood sensor with SentryPlus Alert® technology detects excessive relief valve discharge, relaying alerts when paired with a connection kit. Its compact, lightweight design allows for easier installation and maintenance. Approved by ASSE, UL, FM, CSA B64.4, NSF 61-G, and AWWA, it operates at up to 175 psi and between 33°F and 140°F. Item number F0191272.

Help Me Connect

Connections

  • This backflow preventer features groove end connections for easy installation into existing grooved piping systems.
  • The assembly is designed for horizontal installation and can also be configured for "Z" pattern or "N" pattern horizontal setups.
  • To activate the flood sensor's alert capabilities, an add-on sensor connection kit is required. This kit enables communication for multichannel alerts.
  • When installing a drain line on this Series C400 backflow preventer, maintain a 400/500 air gap to ensure proper function and compliance.
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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 backsiphonage and backpressure, suitable for health hazard applications in continuous pressure piping.

It features a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.

Construction & Features

  • Equipped with two independent Link Check modules and a differential pressure relief valve, all contained within a single housing.
  • Constructed with a Type 304 (Schedule 40) stainless steel housing and sleeve for durability and corrosion resistance.
  • Utilizes groove end connections for straightforward installation and pipeline alignment.
  • Includes resilient seated gate valves with an outside stem and yoke (OS&Y) and an optional integrated supervisory switch for tamper signaling.
  • The flood sensor provides flood alert capabilities when activated with an add-on connection kit, relaying multichannel alerts (call, email, text).
  • Features a compact design that is 70% lighter than traditional models, allowing for smaller enclosures.
  • Lead Free* construction ensures the wetted surface contains less than 0.25% lead by weight, complying with national plumbing codes.
  • An add-on connection kit is required to activate the flood sensor's communication features; without it, the sensor operates as a passive component.

Specifications

General

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Nominal Size: 4 inch
  • Model: C400-OSY-FS
  • Configuration: Horizontal, "Z" pattern horizontal, "N" pattern horizontal

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)
  • Service Flow Velocity: 7.5 fps
  • Rated Flow Velocity: 13 fps
  • UL Flow Rate Velocity: 15 fps

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

Dimensions & Weight (4 inch OSY)

  • Overall Length (A): 33 3/4 inches (857 mm)
  • Center to Center (C): 22 3/4 inches (578 mm)
  • Relief Valve Outlet to Centerline (D): 12 3/16 inches (310 mm)
  • Overall Height (H): 35 5/8 inches (905 mm)
  • Weight: 187 lbs (85 kg)

Certificates & Approvals

  • ASSE 1013
  • CSA B64.4
  • UL Classified (OSY)
  • FM Approved (OSY)
  • NSF Certified to NSF/ANSI 61-G (OSY)
  • AWWA C511-97
  • 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 Colt 4 inch C400-OSY-FS backflow preventer?

Its primary purpose is to protect potable water systems from contamination caused by reverse flow (backsiphonage or backpressure) of non-potable substances, especially in health hazard applications.

Does this backflow preventer come with a working flood sensor?

Yes, it includes a flood sensor with SentryPlus Alert® technology. However, an add-on connection kit is required to activate the sensor's communication features for alerts; without the kit, it acts as a passive component.

What material is the housing of the C400-OSY-FS assembly made from?

The housing and sleeve are constructed from durable Type 304 (Schedule 40) stainless steel, offering corrosion resistance and longevity.

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

This assembly is approved by ASSE 1013, CSA B64.4, UL Classified, FM Approved, NSF Certified to NSF/ANSI 61-G, and meets AWWA C511-97 standards.

What is the maximum operating pressure and temperature range for this unit?

It 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).

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