Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Cast Steel (ASTM A216 Gr. WCB/WCC) |
| Stem / Spindle | SS 410 / SS 304 |
| Seat / Trim | 13% Cr. SS / Stellite 6 Overlay |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | API 600 / BS 1414 / ASME B16.34 |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | Class 150 / Class 300 / Class 600 |
Features & Benefits
Self-Acting No Power Required
Pilot-operated diaphragm and spring mechanism operates entirely from process fluid pressure; no electricity or compressed air needed.
Pilot-Operated High Accuracy
Pilot stage amplifies small downstream pressure changes into large main valve movement, achieving ±5% accuracy under varying load.
High Turndown Ratio
Multi-stage piston and characterised trim provide stable control from 5% to 100% of rated flow with minimal pressure deviation.
Stable Pressure Control
Damped pilot diaphragm and balanced piston design prevent hunting and oscillation common in direct-acting regulators.
External Sensing Line
Remote pressure sensing line allows valve to be installed away from turbulent fittings while sensing true downstream pressure.