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
Complete Valve Train Assembly
All components -- valve, actuator, solenoid, switches, filter-regulator, position indicator, tubing and fittings -- are fully mounted, calibrated, and tested as a single assembly. Ready for installation.
Fail-Close Spring-Return Actuator
Single-acting spring-return piston actuator ensures automatic valve closure on air failure, protecting the combustion train from uncontrolled gas flow.
Explosion-Proof 24VDC Solenoid
Zone 1 certified solenoid valve with manual override for local testing and power-failure operation. Certification standard selectable: ATEX / IECEx / UL / FM / INMETRO.
Fire-Safe Design
Primary PTFE soft seat for bubble-tight shutoff under normal conditions; secondary SS316 metal seat maintains shutoff after fire exposure per API 607 / ISO 10497.
Fast Closure < 1 Second
Quick-exhaust valve and properly sized actuator achieve full valve closure within one second -- critical for combustion safety applications.
Dual Inductive Position Switches
Two independent 24VDC explosion-proof proximity sensors confirm OPEN and CLOSED valve position to the control system, with 1-meter pre-wired cable.