Z81-300 A 300 PSI OS&Y Gate Valve Grooved End
The Z81-300A (or Z81-300) is an Outside Screw and Yoke (OS&Y) resilient wedge gate valve featuring grooved connection ends. Manufactured by Ningjin APC Industries and engineered for severe-duty fire protection infrastructure, its OS&Y design provides an immediate visual confirmation of whether the valve is physically open or closed
Description
⚙️ Core Technical Specifications
| Parameter | Specification Details |
|---|---|
| Model Designation | Z81-300A / Z81-300 |
| Size Range | Available from 2″ to 12″ (DN50 to DN300) |
| Working Pressure | Rated up to 300 PSI (20.7 bar) |
| Testing Pressure | Hydrostatic Shell Test: 600 PSI (41.4 bar) |
| Working Temperature | 0°C to 80°C (32°F to 176°F) |
| Face-to-Face Standard | Complies with ASME B16.10 standards |
| End Connections | Grooved ends matching ANSI/AWWA C606 specifications |
🧱 Material Composition
-
- Valve Body & Bonnet: Heavy-duty Ductile Iron (ASTM A536 Grade 65-45-12)
- Resilient Wedge: Ductile Iron fully encapsulated with high-performance EPDM rubber (ASTM D2000)
- Stem: Corrosion-resistant Stainless Steel (SS304) or High-Strength Bronze
- Handwheel: Durable Cast Iron or Steel
- Coating: Interior and exterior electrostatically applied Fusion-Bonded Epoxy (FBE) coating, colored fire-protection red (RAL 3000) matching AWWA C550
📜 Standards & Approvals
- Fire Safety Certifications: UL Listed, CUL Listed, and FM Approved (conforming to UL 262 and FM 1120/1130 standards)
- Design Standards: Strictly complies with ANSI/AWWA C515 for thin-walled resilient-seated gate valves
- Potable Water Compliance: Available with certified lead-free NSF/ANSI 61 and NSF/ANSI 372 options for drinking-water safety
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