3 C500Z-OSY-C-FS

Item Number: F0191331
1 1
$9,302.25
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 3 inch
  • Weight: 225.0 lb
  • Housing Material: 304 (Schedule 40) Stainless Steel
  • Configuration: Horizontal Z Pattern
  • Shutoff Valves: OS&Y Resilient Seated Gate Valves
  • Includes: Flood Sensor with SentryPlus Alert® Technology
  • Bypass: Metered Cubic Feet for Leak Detection
  • Maximum Operating Pressure: 175 PSI
  • Temperature Range: 33°F - 140°F

Description

This Colt 3 inch reduced pressure detector backflow preventer assembly (SKU F0191331) offers advanced protection for drinking water supplies against health-hazard cross-connections. Featuring a durable 304 stainless steel body and OS&Y resilient seated gate valves, it's designed for horizontal Z pattern installation in fire protection and industrial processing systems. A built-in flood sensor with SentryPlus Alert technology detects relief valve discharges, and a metered bypass monitors for leaks or unauthorized water use. It operates within a 33F to 140F temperature range and withstands up to 175 PSI.

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Connections & Compatibility

This 3 inch reduced pressure detector assembly is designed for horizontal Z pattern installation and features groove couplings to facilitate easy installation and pipeline alignment. The OS&Y shutoff valves are suitable for integration into fire protection systems where resilient seated gate valves are required. The assembly includes a flood sensor with SentryPlus Alert® technology; however, an add-on sensor connection kit is required to activate its alert features. Compatible connection kit options include those for Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi, allowing for advanced monitoring of potential flooding events.

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Additional Details

This Colt™ 3 inch reduced pressure detector backflow preventer assembly prevents the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage or backpressure.

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Always consult your local water authority, building, and plumbing codes before installation.

This backflow assembly features a compact modular design and is approved for horizontal Z pattern installation, offering protection to drinking water supplies in health-hazard non-potable service applications such as irrigation, fire lines, or industrial processing.

Key Features

  • Equipped with a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve.
  • An add-on sensor connection kit (required and sold separately) activates the flood sensor for relaying alerts about potential flooding events.
  • Sensor Control Monitor allows integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
  • Main valve body and closure sleeve constructed from 304 (Schedule 40) stainless steel.
  • Features OS&Y (Outside Stem and Yoke) resilient seated gate valves.
  • Includes a cubic feet per minute meter for detecting underground leaks and unauthorized water usage in fire sprinkler systems.
  • Designed with groove couplings for ease of installation and pipeline alignment.
  • Features a bottom-mounted cast stainless steel relief valve.

Specifications

General

  • Brand: Colt (Ames Fire & Waterworks)
  • Model: C500Z-OSY-C-FS
  • Product Type: Reduced Pressure Detector Assembly
  • Size: 3 inch
  • Configuration: Z Pattern Horizontal
  • Shutoff Valve Type: OS&Y (Outside Stem and Yoke) Resilient Seated Gate Valves
  • Bypass: Metered (Cubic Feet)

Materials

  • Housing & Sleeve: 304 (Schedule 40) Stainless Steel
  • Elastomers: EPDM, Silicone, Buna 'N'
  • Link Checks: Noryl®, Stainless Steel
  • Check Discs: Reversible Silicone or EPDM
  • Test Tocks: Lead Free* Bronze Body
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel
  • Relief Valve: Cast Stainless Steel (Bottom-mounted)

Performance

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

Certificates & Approvals

  • Approved by: Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
  • AWWA Standard: C511-97
  • ASSE Standard: 1047
  • CSA Standard: B64.4
  • UL Classified
  • FM Approved

FAQs

What is the primary purpose of this 3 inch backflow preventer?

This reduced pressure detector backflow preventer is designed to protect potable drinking water supplies from contamination by non-potable substances, particularly in fire protection, irrigation, and industrial processing applications, preventing reverse flow due to backsiphonage or backpressure.

What materials are used in the construction of this C500Z-OSY-C-FS backflow assembly?

The main housing and sleeve are constructed from 304 (Schedule 40) stainless steel. Key components like elastomers, link checks, check discs, and test cocks use materials such as EPDM, silicone, Buna 'N', Noryl®, and Lead Free* bronze.

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

The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate its alert capabilities and enable communication with smart devices or BAS, an add-on sensor connection kit (sold separately) is required.

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

This 3 inch backflow preventer has a maximum operating pressure of 175 PSI (12.1 bar). Its operational temperature range is from 33°F (0.5°C) to 140°F (60°C).

Is this backflow preventer approved for use in the United States for potable water systems?

No, the manufacturer explicitly states it is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. It is designed for non-potable applications like fire lines.