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
Balanced Plug Design
Balanced plug or double-seated design minimises inlet pressure effect on outlet pressure stability, maintaining accuracy across wide upstream pressure variations.
Direct-Acting or Pilot-Operated
Direct-acting for smaller sizes and lower accuracy requirements; pilot-operated for larger sizes and higher accuracy (+/- 2.5%).
Soft-Seat Shutoff
NBR/EPDM or PTFE soft seat achieves bubble-tight shutoff under no-flow conditions, preventing gas leakage downstream.
Internal Relief (Optional)
Built-in over-pressure relief diaphragm or external relief valve port protects downstream system from regulator failure.
Wide Flow Range
Designed for 25 MMSCFD nominal flow with good turndown ratio (typically 20:1) for varying demand conditions.