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Cut-off valves – safety valves
Safety ball valve for overpressure relief of boiler/superheater header – is installed in parallel with spring-loaded safety valve and it’s set pressure is lower than set pressure of spring-loaded safety valve for 1 bar , also safety ball valve can operate as cut-off valve.
- Temperature up to +600 °С
- DN 65- 100
- Pressure up to 770 bar
Safety ball valves advanages:
- zero leakage from stem packing in the most severe temperature shocks
- high nickel alloy base ball and seat with a proprietary coating ensures superior wear resistance
- quick operating pneumatic actuator decreases wear on sealing surfaces
- field repairable
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Cut-off valve
Cut-off valve constist of a ball valve and Butterfly valve and quick action pneumatic actuator. Operating time of this valve less than 1 second.
Connection type: flanged, interflanged, welded, socket.
- Temperature from -40 °С to +250 °С
- DN 15-300
- PN 6-40
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