Safety shut-off valves

SAFETY SHUT-OFF GAS VALVES

Safety shut-off gas valve is a device designed for automatic cutoff of the gas supply in case of pressure boost above requested actuation value.

FIELD OF APPLICATION and OPERATING PRINCIPLE:

Safety shut-off valve is usually installed in gas distributing plants and units in front of the pressure regulator-stabilizer and provides control of the output pressure received behind the regulator. The signal about the deviation of the gas pressure from the set value is sent to the safety shut-off valve through the impulse tube connected to the output pressure gas pipeline. The value of the monitored pressure is adjusted by regulating the spring in the safety shut-off valve. When the set value of pressure behind the regulator is exceeded, the safety shut-off valve closes and shuts off the gas supply in the pipeline. The valve can only be opened manually after eliminating the cause of gas pressure excess above the controlled one.

MAXIMUM INPUT PRESSURE:

• up to 6 bar.

ADJUSTMENT RANGE OF CONTROLLED PRESSURE:

• 60-230 mbar;
• 200-440 mbar;
• 420-700 mbar.

Upon individual request: manufacture with different adjustment range.

DIAMETER NOMINAL and HOUSING VERSION:

Coupling DN 15÷50

Flange DN 15÷200

HOUSING MATERIAL:

• aluminum;
• steel.

CLIMATIC VERSION:

• -30…+60 °С;
• -40…+60 °С.

AMBIENT TEMPERATURE:

• from -30 up to +70 °С.

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