6" Double Check Valve Assembly With OSY Female Gasket
R 105,399.00
Sale price
R 105,399.00
Regular price
R 132,161.00
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6" Double Check Valve Assembly With OSY Female Gasket
R 105,399.00
Sale price
R 105,399.00
Regular price
R 132,161.00
Shipping calculated at checkout
The 6" Double Check Valve Assembly with OS&Y Female Gasket provides dependable backflow prevention for commercial fire protection and industrial plumbing systems. Installed directly into municipal water supply and fire sprinkler configurations, this assembly protects potable water lines by stopping dangerous reverse flow and cross-contamination.
Engineered to satisfy stringent life-safety demands, this assembly directly fulfills code requirements under NFPA 13 for fire sprinkler system backflow prevention. The integrated Outside Screw and Yoke (OS&Y) gate valves give you an immediate visual indication of open or closed status, streamlining routine inspections and satisfying local Authority Having Jurisdiction (AHJ) mandates.
Key Features & Construction
- Ductile Iron Body: Built from ASTM A536 ductile iron to provide high mechanical strength and corrosion resistance in demanding environments.
- Stainless Steel Hardware: Internal springs and fasteners use 300-series stainless steel to prevent degradation from varying water quality.
- Glass-Filled Thermoplastic Check Modules: Advanced internal check modules lower pressure loss and handle high flow rates efficiently.
- Replaceable EPDM Seals: Reversible elastomer discs secure the seating surface and simplify maintenance to extend service life.
- OS&Y Gate Valves: Female gasket ends create secure, leak-resistant piping connections while offering clear visual position checks.
- Flexible Mounting: Installs securely for horizontal or vertical upward flow configurations to match your mechanical room layout.
Technical Specifications & Compliance Table
| Manufacturer / Brand | Zurn Wilkins |
| Model / Series Number / SIN | 6" Double Check Valve Assembly with OS&Y Female Gasket |
| Connection / Thread Size & Type | 6" Female Gasket Ends |
| Pressure Rating (WWP / Max Working Pressure) | 175 PSI |
| K-Factor | N/A |
| Temperature Rating / Response Type | 33°F to 140°F |
| Material / Body Construction | ASTM A536 Ductile Iron (Body); 300-Series Stainless Steel (Springs/Fasteners); Glass-Filled Thermoplastics (Check Modules); EPDM (Seals) |
| Agency Listings & Approvals | UL Listed (UL 1469), FM Approved, ASSE 1015, AWWA C510 |
| Applicable NFPA Standards | NFPA 13 |
Always verify local AHJ installation guidelines, pipe sizing, and spacing requirements before starting your assembly layout.
Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)
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