Fig. IV-0811 · Fire Protection
Wafer Butterfly Valve — Gear Operated, Supervised
Fire-service wafer butterfly with integral tamper switch
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Gear-operated wafer butterfly valve with factory-mounted supervisory switch and flag position indicator for sprinkler risers, manifolds and pump rooms.
Products are supplied to the stated API / ISO / ASME / AWWA standards from qualified manufacturers for projects in Saudi Arabia, including Dammam, Jubail, Yanbu, Riyadh, Jeddah and the Eastern Province. Certifications, monograms and listings are those of the manufacturing plant and are provided as specified in the purchase order.
Technical specifications
| Figure number | IV-0811 |
|---|---|
| Size range | 2″ – 12″ (DN50 – DN300) |
| Pressure rating | 300 psi (21 bar) |
| End connections | Wafer between flanges (ASME B16.5 / EN 1092) |
| Typical materials | As specified on the project datasheet |
| Design standards | MSS SP-67 · ASME B16.10 · NFPA 13 |
| Certifications (per manufacturer) | UL · ULC · FM · VdS |
Key features
- Single-piece through-shaft, splined drive
- EPDM encapsulated disc — bubble-tight
- Dual SPDT tamper switches, weatherproof
- Slow-close gearbox prevents water hammer
