8 LFC500N-OSY-G-FS

Item Number: F0124651
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$30,996.68
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 8 inch
  • Weight: 492.0 lb
  • Housing & Sleeve Material: Type 304 Stainless Steel
  • Valve Type: OSY Resilient Seated Gate
  • Connections: Grooved Inlet and Outlet
  • Maximum Working Pressure: 175 psi
  • Flood Sensor: Yes, with SentryPlus Alert Technology
  • Configuration: Horizontal N Pattern
  • Lead Free Construction: Yes

Description

The 8 inch Colt Series LFC500N-OSY-G-FS is a lead-free reduced pressure detector backflow preventer assembly designed to protect potable water systems from contamination. This unit prevents backsiphonage and backpressure from fire protection systems and non-potable water sources. It features a compact design, 304 stainless steel housing, grooved connections, and OSY gate valves. A built-in SentryPlus Alert flood sensor detects continuous relief valve discharge, and a metered bypass monitors water usage. It is approved for horizontal N pattern installation and meets lead-free compliance. Item number F0124651.

Help Me Connect

This 8 inch LFC500N-OSY-G-FS backflow preventer assembly features grooved inlet and outlet connections. It connects to piping systems with 8 inch grooved fittings. The OSY (Outside Stem and Yoke) resilient seated gate valves are integral to the assembly.

For flood sensor activation, an add-on sensor connection kit is required. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor, which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi.

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Additional Details

This Colt Series LFC500 8 inch lead free reduced pressure detector backflow preventer assembly protects potable water systems from contamination due to backsiphonage and backpressure from fire protection substances or non-potable water sources.

It features a compact, modular design approved for horizontal N pattern installation and includes a flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.

Key Features

  • Extremely compact design, 70% lighter than traditional designs
  • Housing and sleeve constructed from Type 304 (Schedule 40) stainless steel
  • Grooved inlet and outlet connections for integral pipeline adjustment
  • Patented link check for lowest pressure loss and unmatched ease of serviceability
  • Equipped with OSY (Outside Stem and Yoke) resilient seated gate valves and replaceable check disc rubber
  • Bottom-mounted cast stainless steel relief valve for corrosion resistance
  • Metered bypass with a gallon per minute meter to detect leakage or unauthorized water use
  • Integrated flood sensor with SentryPlus Alert technology on the relief valve for flood detection
  • Includes an integrated supervisory switch as an option on each gate valve of the OS&Y model

An add-on connection kit is required to activate the flood sensor's alert features. Without this kit, the flood sensor is a passive component and will not communicate with other devices. Watts® is not responsible for alert failures due to connectivity issues, power outages, or improper installation.

Specifications

General

  • Product Type: Reduced Pressure Detector Assembly
  • Size: 8 inch
  • Configuration: Horizontal N Pattern
  • Lead Free: Yes (Wetted surface contains less than 0.25% lead)
  • Valve Type: OSY (Outside Stem and Yoke) Resilient Seated Gate Valves
  • Bypass: Metered Bypass with Gallon per Minute Meter
  • Flood Sensor: Yes, with SentryPlus Alert Technology
  • Supervisory Switch: Integrated option on OS&Y gate valves

Materials

  • Housing & Sleeve Material: Type 304 (Schedule 40) Stainless Steel
  • Elastomers: EPDM, Silicone, Buna-N
  • Link Checks Material: Noryl®, Stainless Steel
  • Check Discs Material: Reversible Silicone or EPDM
  • Test Cocks Material: Lead Free* Bronze Body
  • Pins & Fasteners Material: 300 Series Stainless Steel
  • Springs Material: Stainless Steel

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 110°F (0.5°C – 43°C)

Connections

  • Inlet Connection: Grooved
  • Outlet Connection: Grooved

Certificates & Approvals

  • Approved by FCCCHR-USC
  • AWWA C511-97
  • ASSE 1047
  • CSA B64.4
  • CULUS Classified (for OSY models)
  • FM Approved (for OSY models)
  • NSF Certified to NSF/ANSI 372

FAQs

What is the primary purpose of the Colt LFC500N-OSY-G-FS backflow preventer?

The primary purpose is to protect potable water systems from contamination by preventing the reverse flow of non-potable water or fire protection substances due to backsiphonage or backpressure.

Does this backflow preventer comply with lead-free requirements?

Yes, the Series LFC500 features lead-free construction, meaning the wetted surface of the product contacted by consumable water contains less than 0.25% of lead by weight.

What type of connections does this 8-inch assembly use?

This 8-inch assembly utilizes grooved inlet and outlet connections, designed for integral pipeline adjustment and ease of installation with compatible grooved fittings.

How does the flood sensor feature work on this model?

The integrated SentryPlus Alert flood sensor on the relief valve detects excessive water discharges. When paired with an add-on connection kit, the sensor activates to relay alerts for potential flooding events via various communication options.

What type of shutoff valves are included with this assembly?

This assembly is equipped with OSY (Outside Stem and Yoke) resilient seated gate valves, which are UL Classified and FM Approved for reliable shutoff.

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