FIELD: engineering industry; devices for the interruption of reverse flow of gas, steam and fluid in the machines and pipelines.
SUBSTANCE: inverted valve contains shutting-of device and seating with mounting surfaces. At least, part of seating and/or shutting-of device in the area of mounting surface is made of titanium nikelid alloy, forming the seal. The alloy is chosen with the critical strain value of martensitic deformation within the range 350-250 MPa.
EFFECT: improvement of inverted valve sealing along with the extended service life.
6 cl, 7 dwg
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