4" Double Check Valve With OSY LF Valve For Fire Safety
$5,516.99
Sale price
$5,516.99
Regular price
$6,068.99
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4" Double Check Valve With OSY LF Valve For Fire Safety
$5,516.99
Sale price
$5,516.99
Regular price
$6,068.99
Shipping calculated at checkout
The Conbraco 4" Double Check Valve Assembly with OS&Y Low Flow Valve protects potable water supplies by preventing backflow in commercial sprinkler and standpipe systems. Installed within fire suppression water supply mains, this dual check assembly isolates non-potable water and safeguards municipal water quality against backpressure or backsiphonage. Accessible test ports and reversible internal components enable you to perform routine testing and maintenance without interrupting the fire suppression system.
Engineered for compliance with NFPA 13 and NFPA 25 standards, this assembly satisfies mandatory backflow prevention and inspection requirements for commercial fire protection networks. It aligns with UL 1469, FM Approved, ASSE 1015, and AWWA C510 specifications to meet regulatory building codes for life safety and water safety installations.
Key Features & Construction
- Durable Body Construction: Main body is crafted from ASTM A536 ductile iron with an epoxy coating to resist corrosion and mechanical wear in rigorous fire service environments.
- Corrosion-Resistant Internals: Internal components feature 300-series stainless steel to deliver structural strength and longevity under high-use conditions.
- Advanced Check Modules: Incorporates glass-filled thermoplastic for dimensional stability alongside reversible and replaceable EPDM elastomer seats for tight sealing.
- Visual Valve Position Indicator: OS&Y Low Flow valve design provides clear visual position indication and straightforward operation during testing.
- Operational Versatility: Rated for maximum working pressures up to 175 PSI, supporting both ANSI B16.1 flanged and AWWA C606 grooved end connections.
- Flexible Installation: Engineered to accommodate horizontal or vertical upward flow configurations to adapt to mechanical room layouts and vaults.
Technical Specifications & Compliance Table
| Manufacturer / Brand | Conbraco |
| Model / Series Number / SIN | 4" Double Check Valve with OS&Y LF Valve |
| Connection / Thread Size & Type | 4" (ANSI B16.1 Flanged / AWWA C606 Grooved) |
| Pressure Rating (WWP / Max Working Pressure) | 175 PSI |
| K-Factor | N/A |
| Temperature Rating / Response Type | N/A |
| Material / Body Construction | ASTM A536 Ductile Iron with Epoxy Coating (Body); 300-Series Stainless Steel (Internals); EPDM (Seats) |
| Agency Listings & Approvals | UL Listed (UL 1469), FM Approved, ASSE 1015, AWWA C510 |
| Applicable NFPA Standards | NFPA 13, NFPA 25 |
Verify local Authority Having Jurisdiction (AHJ) requirements and consult manufacturer technical documentation prior to piping layout and installation.
Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)
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