Concentric, Rubber Lined
Resilient Seated Butterfly Valve
Cost-effective flow control for water, air, and general utility services
The most widely used butterfly valve design — simple, reliable, and affordable. The concentric disc and resilient rubber seat provide bubble-tight shutoff for water, air, and non-aggressive fluids. Available in wafer or lug body styles for easy installation between pipe flanges.
API 609ISO 9001CE PEDWRAS (water)
Technical Specifications
| Size Range | NPS 2″ – 48″ / DN 50 – 1200 |
| Pressure Rating | PN 10 / PN 16 / Class 150 |
| Temperature Range | -10°C to +110°C (EPDM), -10°C to +90°C (NBR) |
| Body Material | Cast Iron, Ductile Iron, WCB, CF8M |
| Seat Material | EPDM, NBR, Viton®, Silicone, PTFE |
| End Connection | Wafer, Lug, Flanged |
| Design Standard | API 609 Category A, EN 593, MSS SP-67 |
| Testing Standard | API 598, EN 12266-1 |
Key Features
- Resilient EPDM, NBR, or Viton® seat for bubble-tight sealing
- 316 SS disc with polished edge for extended seat life
- Wafer or lug body — installs between standard pipe flanges
- Gear operator standard NPS 8″ and above
- Optional electric or pneumatic actuation for remote operation
Industry Applications
Municipal water distributionCooling water systemsHVAC chilled waterFire protection systemsIrrigation & agriculture
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