They are designed to reduce gas pressure according to GOST 5542 from the input value (up to 1.2 MPa inclusive) to the required values, as well as to perform the following functions:
- automatic maintenance of output pressure within specified limits regardless of changes in flow rate and input gas pressure (within the specified range of their values);
- automatic termination of gas supply in case of increase or decrease of output pressure above or below the permissible set values;
- gas purification from mechanical impurities;
- measurement of volumetric flow rate and gas volume (gas flow metering).
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