Return valve refers to the protective pipeline fittings, designed for automatic shut-off of the reverse flow of the working medium in pipelines. The valve is steel axisymmetric. The valve is controlled by the working medium flow.
The tightness of the valve gate is class C according to GOST 9544. The valve is hermetically sealed in relation to the external environment. Connection to pipelines is welded.
Welding is carried out by means of adapters on mating flanges. The presence of mating flanges with adapters, which are elements of the design, provides quick removal of the valve without cutting from the pipelines.
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