Features: Flood sensor with SentryPlus Alert® technology
Bypass: Metered, with GPM meter
Description
The Ames Fire & Waterworks Colt LFC500Z-OSY-G-FS is a 4 inch lead free reduced pressure detector backflow preventer assembly designed for horizontal Z pattern installation. It protects potable water systems from contamination by backsiphonage and backpressure in health-hazard applications. Constructed from durable Type 304 stainless steel, it features OSY resilient seated gate valves, a metered bypass for leak detection, and an integrated SentryPlus Alert® flood sensor to detect excessive water discharge. This compact unit has a maximum working pressure of 175 psi and is approved by ASSE, CSA, UL, FM, and NSF. Item number F0124660.
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Connections
This 4 inch Colt LFC500Z-OSY-G-FS assembly features grooved inlet and grooved outlet gate connections, denoted by the "G" in its model name (OSY GxG**).
The assembly is designed for horizontal Z pattern installation.
The integrated flood sensor requires an add-on connection kit to become active and communicate alerts for potential flooding events. Without this kit, the sensor remains passive.
The Ames Fire & Waterworks Colt LFC500Z-OSY-G-FS is a 4 inch lead free reduced pressure detector backflow preventer assembly designed to protect potable water systems from contamination due to backsiphonage or backpressure.
This compact and modular assembly is specifically used in health-hazard applications, monitoring unauthorized water use from fire protection systems and detecting excessive water discharges.
Key Features
Lead Free construction ensures compliance with lead-free installation requirements, with wetted surfaces containing less than 0.25% lead.
Features an extremely compact design and is up to 70% lighter than traditional designs, facilitating easier installation.
Housing and sleeve are constructed from Type 304 (Schedule 40) stainless steel for durability and corrosion resistance.
Includes grooved fittings for integral pipeline adjustment and unmatched ease of serviceability.
Equipped with a metered bypass featuring a gallon per minute meter to detect leaks or unauthorized water use from the fire sprinkler system.
Integrated flood sensor with SentryPlus Alert® technology on the relief valve detects excessive water discharges, providing flood alert capabilities when paired with an add-on connection kit.
Features OSY (Outside Stem and Yoke) resilient seated gate valves with optional integrated supervisory switches for enhanced monitoring.
Utilizes patented link checks with reversible elastomer discs for lowest pressure loss and drip-tight closure against reverse flow.
Approved for horizontal Z pattern installation.
Note: 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.
Specifications
Product Type: Reduced Pressure Detector Assembly
Model: LFC500Z-OSY-G-FS
Size: 4 inch
Configuration: Horizontal Z pattern
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
Shutoff Valves: UL Classified and FM Approved Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
Bypass: Metered (Gallon per Minute Meter)
Flood Sensor: Yes, with SentryPlus Alert® technology
Temperature Range: 33°F - 110°F (0.5°C – 43°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)
AWWA C511-97
ASSE 1047
CSA B64.4
cULus Classified
FM Approved (**BFG & OSY Only)
NSF Certified to NSF/ANSI 372 (Lead Free*)
FAQs
What does "Lead Free" mean for this backflow preventer?
"Lead Free" indicates that the wetted surfaces of this product, those that come into contact with consumable water, contain less than 0.25% lead by weight, complying with national lead-free installation requirements.
What type of shutoff valves are included with this model?
This model includes UL Classified and FM Approved OSY (Outside Stem and Yoke) resilient seated gate valves, which offer reliable flow control and easy visual indication of valve position.
How does the flood sensor work, and what is required 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, an add-on sensor connection kit must be purchased separately. Without the kit, the sensor is passive.
What types of connections does this 4-inch backflow assembly use?
This LFC500Z-OSY-G-FS model features grooved inlet and grooved outlet gate connections, making it suitable for quick and easy installation into existing grooved piping systems.
What is the maximum operating pressure and temperature range for this device?
The maximum working pressure for this backflow preventer is 175 psi (12.1 bar). It is designed to operate within a temperature range of 33°F to 110°F (0.5°C to 43°C).
