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
Isolated Bonnet Design
Flexible diaphragm completely isolates the bonnet, stem, and compressor from the process fluid, eliminating packing leakage and making the valve ideal for toxic, corrosive, and sterile applications.
Bubble-Tight Shutoff
Soft elastomer diaphragm achieves EN 12266-1 Class A zero visible leakage, even on particulate-laden fluids and fibrous slurries that would damage conventional seats.
Fast-Acting Quarter-Turn or Multi-Turn
Diaphragm valve opens or closes rapidly with minimal stem travel, providing quick response for automated batch processes and emergency isolation.
Wide Chemical Compatibility
EPDM, NBR, Viton, Butyl, Hypalon, Neoprene, and PTFE diaphragm options cover virtually all chemical services from water and steam to concentrated acids and solvents.
Self-Draining Design
Weir-type body profile is self-draining when installed vertically, preventing fluid accumulation and bacterial growth -- essential for pharmaceutical and food-grade applications.
Visual Position Indication
Stem position provides direct visual indication of valve open/closed status without external position switches.