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 |
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
Pressure Seal Bonnet
Graphite pressure seal ring tightens under line pressure, eliminating large bolting and reducing bonnet leakage risk at high temperature.
High-Temperature Cr-Mo Steel
WC9 (2.25Cr-1Mo) maintains creep strength and oxidation resistance at 593°C superheated steam conditions.
Stellite Hard-Faced Trim
Plug and seat overlay with Stellite 6 cobalt alloy resists steam cutting and galling for 100,000+ hour life.
Quick-Opening Plug
Streamlined plug profile minimises pressure drop when open and provides rapid flow area increase for turbine warm-up.
IBR Certified
Design and material certified to Indian Boiler Regulations for installation in boilers and steam lines under IBR jurisdiction.