4" 3000SSOSY Double Detector Check Valve Manufacturer Valve

The 4" 3000SSOS&Y Double Detector Check Valve safeguards commercial fire protection systems and protects potable water supplies by delivering precise flow detection and reliable backflow prevention. Installed within high-pressure sprinkler risers and commercial water supply assemblies, this assembly utilizes an engineered double-check configuration and dual pressure differential detection ports to provide real-time flow alerts and early leak detection without interrupting system service.

To satisfy the rigorous demands of commercial life safety installations, this component complies with standard fire protection engineering practices and supports system guidelines outlined in NFPA 13 and NFPA 25 for the installation, testing, and maintenance of backflow prevention assemblies and private fire service mains. The Outside Stem & Yoke (OS&Y) rising stem mechanism satisfies mandatory visual inspection requirements, giving contractors and facility managers an immediate, unambiguous indication of valve open or closed status during routine operational testing.

Key Features & Construction

• Ductile Iron Body: Constructed with an ASTM A536 ductile iron body protected by a corrosion-resistant fusion-bonded epoxy coating for long-term durability in harsh indoor or outdoor environments.
• Glass-Filled Thermoplastic Check Modules: Internal check valve components utilize high-strength thermoplastic material engineered to withstand demanding flow pressures.
• OS&Y Rising Stem Design: Provides clear visual status indication for fast manual operation and inspection on the job site.
• Double Detector Configuration: Dual pressure differential detection ports offer real-time flow alerts and early leak detection.
• High-Pressure Capability: Supports a maximum working pressure of 300 PSI (20.7 bar) within a temperature range of 33°F to 140°F (0.5°C to 60°C).
• Flexible Installation: Connects to piping via ANSI B16.1 flanged and AWWA C606 grooved end connections supporting horizontal or vertical upward flow configurations.
• Reversible EPDM Seats: Features reversible EPDM elastomer valve seats to simplify annual testing and extend service life.

Technical Specifications & Compliance Table

Contractors and facility managers must verify all local Authority Having Jurisdiction (AHJ) mandates and cross-reference system design blueprints prior to valve installation. Please note that this product is non-refundable and non-cancellable.

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)