8 LFC500-OSY-C-FS
Item Number: F0124637
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Regular price
$28,452.95
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Estimated transit time: 2 to 5 Business Days
Brand - Ames
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- Size: 8 inch
- Weight: 647.0 lb
- Lead Free construction (less than 0.25% lead by weight)
- Housing Material: Type 304 (Schedule 40) stainless steel
- Features flood sensor with SentryPlus Alert® technology
- Includes OSY (Outside Stem and Yoke) resilient seated gate valves
- Maximum Operating Pressure: 175 PSI
- Metered bypass to detect leakage or unauthorized water use
- ASSE 1013, CSA B64.4, UL, FM, NSF/ANSI 61 Approved
Description
Description
The 8 inch Colt™ Lead Free Reduced Pressure Detector Backflow Preventer Assembly protects potable water systems from contamination due to backsiphonage and backpressure, ideal for fire sprinkler systems and other health-hazard cross-connections. Featuring a compact, lightweight Type 304 stainless steel body, OSY shutoff valves, and a metered bypass, this assembly also includes a flood sensor with SentryPlus Alert® technology to detect water discharges. It is ASSE 1013, CSA B64.4, UL, FM, and NSF/ANSI 61 approved, ensuring reliable and compliant performance for fire protection applications. Item number F0124637.
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Help Me Connect
Installation & Connectivity
- This assembly utilizes groove fittings for integral pipeline adjustment, simplifying installation.
- It comes with OSY resilient seated gate valves for isolation.
- The integrated flood sensor with SentryPlus Alert® technology requires an add-on connection kit to activate its alert features for potential flooding events.
- Connection kit options allow for integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi. A retrofit sensor connection kit is also available for existing installations.

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Additional Details
This Colt™ 8 inch Lead Free Reduced Pressure Detector Assembly provides protection to the potable water system from contamination due to backsiphonage and backpressure, commonly used in health-hazard applications like fire sprinkler systems. It also monitors for unauthorized water use from the fire protection system.
Construction & Design
- Features an extremely compact design and is 70% lighter than traditional designs.
- The entire valve body and closure sleeve are manufactured from Type 304 (Schedule 40) stainless steel.
- Includes torsion spring check valves, a corrosive resistant bottom mounted pressure relief valve, and nickel plated test cocks.
- Equipped with OSY (Outside Stem and Yoke) resilient seated gate valves for shutoff.
- Furnished with a cubic feet per minute meter for detecting underground leaks and unauthorized water use.
- Groove fittings allow for integral pipeline adjustment and unmatched ease of serviceability.
- Features a patented link check for lowest pressure loss and replaceable check disc rubber.
Flood Detection & Monitoring
- Contains a flood sensor with SentryPlus Alert® technology on the relief valve to detect continuous or excessive water discharges.
- The flood sensor relays a signal that triggers a multichannel alert (call, email, text) to notify personnel about potential flooding.
- An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component and will not communicate with any other device.
- The OS&Y model includes an option for an integrated supervisory switch on each gate valve.
Lead Free Compliance
- The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight, complying with Lead Free* installation requirements.
Specifications
- Product Type: Reduced Pressure Detector Assembly
- Size: 8 inch
- Brand: Ames Fire & Waterworks (Colt™)
- Housing & Sleeve Material: Type 304 (Schedule 40) stainless steel
- Elastomers: EPDM, Silicone, Buna-N
- Link Checks: Noryl®, EPDM
- Check Discs: Reversible silicone or EPDM
- Springs Material: 300 series stainless steel
- Test Cocks Material: Bronze, 300 series stainless steel
- Shutoff Valves: OSY (Outside Stem and Yoke) resilient seated gate valves
- Relief Valve: Bottom-mounted cast stainless steel
- Bypass Meter: Cubic feet per minute
- Maximum Working Temperature: 110°F (43°C)
- Minimum Working Temperature: 33°F (0.5°C)
- Maximum Operating Pressure: 175 PSI (12.1 bar)
- Lead Free: Yes (wetted surface less than 0.25% lead by weight)
Certificates & Approvals
- Approved By: Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCC&HR-USC)
- ASSE 1013 Approved
- CSA B64.4 Approved
- UL Classified: OSY resilient seated gate valves
- FM Approved: OSY resilient seated gate valves
- NSF/ANSI 61 Certified
- AWWA C511-97 Compliant
FAQs
What is the primary purpose of the 8 inch Colt™ LFC500 backflow preventer?
This backflow preventer is designed to protect potable water systems from contamination caused by backsiphonage and backpressure, particularly in health-hazard applications such as fire sprinkler systems. It also monitors for unauthorized water usage.
What does "Lead Free" mean for this product?
"Lead Free" means that the wetted surface of this product, which comes into contact with consumable water, contains less than 0.25% of lead by weight, complying with national lead-free installation requirements.
How does the flood sensor function in this assembly?
The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. When an add-on connection kit is installed, it activates the sensor to relay signals for multichannel alerts (call, email, text) to notify personnel of potential flooding.
What are the main materials used in the construction of this backflow preventer?
The housing and sleeve are made from Type 304 (Schedule 40) stainless steel. Elastomers include EPDM, silicone, and Buna-N. Test cocks are bronze and 300 series stainless steel.
What certifications and approvals does this backflow preventer hold?
This assembly is ASSE 1013, CSA B64.4, UL Classified, FM Approved, NSF/ANSI 61 Certified, and AWWA C511-97 compliant, ensuring it meets rigorous safety and performance standards.
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