- Keystone Marine High Performance Butterfly valves offer effective, bi-directional sealing across a wide spectrum of service conditions.
FEATURES
SPECIFICATIONS
DRAWINGS & DOCUMENTS
- Factory testing of every valve at full rating ensures 150% tight shut-off.
- Pure-seal valve is designed according to JIS standards.
- Actuator mounting flange according to ISO 5211.
- Excellent sealing and elasticity.
- One-piece through shaft for maximum strength and design application of blow-out resistant.
- Integrally cast disc position stop precisely locates the disc in seat, to maximize seat and seal life.
- Variations with NBR or FKM seats and other material combinations available on special request.
- Fast and simple seat replacement.
- Type approved by various major shipping class.
- Suitable for use on end-of-line service.
- Tangential, low stress disc pins.
- Long life durability due to double offset operating principle minimizing seat wear.
| Certifications | ABS |
| End Connection | Wafer, Lugged |
| Application | Tanker, Fueling, Crude and Product Transfer, Ballast Control |
| Material | 316 Stainless Steel, Ductile Iron, Cast Iron, Carbon Steel |
| Pressure Class | ASME |
| Seat/Seal Type | High performance |
| Shutoff Class | Zero Leakage |
| Valve Size | NPS 4 / DN 100, NPS 6 / DN 150, NPS 24 / DN 600, NPS 2-1/2 / DN 65, NPS 20 / DN 500 |
| Valve Size Standard | NPS |
| Valve Type | Butterfly |
| Media | Water, Vacuum, Liquid, Fuel Oil, Air |
| Stem | Adjustable packing |