GD-381X Grooved Butterfly Valve
The GD-381X is a grooved-end butterfly valve featuring an integrated supervisory tamper switch and a signal gearbox, engineered primarily for fire protection and life safety piping systems
Description
⚙️ Core Technical Specifications
| Parameter | Specification Details |
|---|---|
| Size Range | Available from 2 inches to 12 inches (DN50 to DN300) |
| Working Pressure | 300 PSI (21 bar) maximum working pressure |
| Test Pressure | Shell test: 600 PSI (42 bar) / Seat test: 330 PSI (23 bar) |
| Working Temperature | Standard: 0°C to 80°C (32°F to 176°F) Extended range: -20°C to 120°C (-4°F to 248°F) (manufacturer dependent) |
| End Connections | Grooved ends compliant with ANSI/AWWA C606 |
| Actuator Mounting | Top flange compliant with ISO 5211 |
🧱 Material Breakdown
-
- Valve Body: ASTM A536 Ductile Iron
- Valve Disc: Ductile Iron encapsulated with a resilient EPDM double-seal coating
- Stems/Shafts: Corrosion-resistant 416 Stainless Steel (Upper & Lower)
- Gearbox Housing: Heavy-duty Cast Iron or Ductile Iron
- O-Rings / Seals: High-performance EPDM / NBR
- Internal Switches: Built-in dual supervisory tamper switches (Indoor/Outdoor rated)
📜 Standards & Approvals
-
- Fire Safety Certifications: UL Listed, ULC Listed, and FM Approved
- Design Standards: Complies with UL 1091 (Butterfly Valves for Fire-Protection Service) and FM 1112
- Testing Standards: API 609
- Potable Water Safety: Available with optional NSF/ANSI 61 and NSF/ANSI 372 lead-free certifications
Please let me know if you need:
- The wiring schematic for the tamper switch (normally open/closed connections)
- A dimensional chart or CAD reference for a specific valve size
- Information on flow coefficients (\(C_{v}\) values) for system hydraulics
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