Depending on the design version, manholes are designed to provide access inside the gas pipeline, reduce gas pulsation and protect the centrifugal blower from ingress of large foreign objects.
Operating pressure up to 11.8 MPa
Maximum wall temperature not more than plus 170 °C
Minimum permissible temperature of the pipeline wall (manhole) or air during construction and installation works is not lower than minus 60 °?.
Outer diameter of connected pipes from 530 mm to 1420 mm
Climatic execution according to GOST 15150-69: UHL.
Warranty period not less than 24 months from the date of commissioning, but not more than 36 months from the date of shipment from the manufacturer's plant.
Default service life 30 years
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