This is a non-stocked item, please call +44 (0)1482 601030 or email sales@flowstar.co.uk for price and availability.
The safety shut-off valve S 100 shuts off the gas flow when the outlet pressure in the regulating section exceeds or falls below a certain response pressure. For this purpose the outlet pressure is monitored by the SSV control device via a separate measurement line.
As a function of the change in pressure, the diaphragm in the control device is raised or lowered. When the outlet pressure in the regulating section falls below the lower switch-off point or exceeds the upper switch-off point, the switch socket connected to the SSV diaphragm will move to the corresponding disengaging position, the balls of the engaging mechanism will release the SSV screw spindle and the closing spring will press the SSV valve plate against the valve seat. The SSV actuator shuts off the gas flow gas-tight.
The SSV can only be opened by hand and engaged in the open position. To do so, the outlet pressure at the measuring point must be lowered below the upper response pressure or raised above the lower response pressure by at least the re-engaging differential amount (Δp).
The SSV can, except where otherwise stipulated in specific national legislation, be used in either functional class A (with diaphragm rupture protection) or B (without diaphragm rupture protection). There is also the option of using a remote display for the SSV position “CLOSED” and a manual and remote release when power is applied or in case of power failure.
Specification
Sizes: 1" (DN25) to 8" (DN200)
Connections: Flanged PN or ANSI
Medium: Gas
Operating Pressure: 8 Barg
Release: Lack of pressure and overpressure
Notes: Can be used in any orientation, Gas-tight zero position