Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Ductile Iron (ASTM A536 / EN-GJS-400-15) |
| Stem / Spindle | SS 410 / SS 420 |
| Seat / Trim | EPDM / NBR / Bronze |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | EN 1171 / AWWA C509 / BS 5163 |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | PN16 / PN25 |
Features & Benefits
Double-Flanged Installation
Flanged body on both ends provides direct bolted connection to mating pump flanges, header flanges, and reservoir outlet flanges without additional transition pieces, reducing installation cost and eliminating gasket leak points.
Full-Face Liner Gasket Seal
Rubber liner extends continuously across both flange faces, acting as the gasket between the valve and mating flanges -- eliminates the need for separate spiral wound or sheet gaskets and ensures bubble-tight sealing at both flange joints.
Large Diameter Water Transmission
Designed specifically for 24 inch to 96 inch (DN600 to DN2400) water transmission mains, reservoir outlets, and treatment plant headers where split-body or wafer valves are impractical due to size and flange loading.
Resilient Seat Bubble-Tight
EPDM or NBR rubber liner provides AWWA C504 zero visible leakage at rated pressure, even on raw water with sediment and debris -- outperforming metal-seated large-diameter gate valves in water service.
Bevel Gear Operator Standard
Bevel gear operator is standard for all sizes, providing the high mechanical advantage required for large-diameter disc operation and enabling remote extension shafts, floor stands, and chainwheel operation for buried or elevated installations.
ISO 5211 Actuator Mount
Top flange drilled per ISO 5211 enables direct mounting of large pneumatic, electric, or hydraulic actuators for automated pump station and reservoir control integrated with SCADA systems.