New in development of high-pressure angle shutoff valves

A design of an angle shutoff valve assembled by the group assembly (subassembly) method is proposed; an advanced method of molding (shaping) sealing surfaces of various types of detachable joints by plastic deformation is described; the results of simulation of crumpling of the ring projection (asperity) before molding of sealing band are reported; the results of full-scale experimental investigations, which confirmed the basic results of computer simulation using ANSYS program (software), are cited; the sealing capacity of cone–cone and plane–plane type of threaded metal-to-metal joints, whose sealing surfaces were produced by plastic deformation, is determined; the effectiveness of sealing pairs, whose sealing surfaces were formed by plastic deformation, is shown; ways of solving technological problems faced in producing valve parts are indicated; conclusions are formulated.