Pipe fluid flow cut=off valve - has tapered surface providing throttle between housing and seals with pipes connected

摘要

The slide valve has a housing hermetically connected to the pipes, together with seals, between which a cut-off component is located to allow movement normal to the fluid flow direction. The cut-off component (4) has an inclined surface (15) on its whole peripheral section opposite to the drive. When the conduits pipes (1, 2) are joined, a narrowing channel is formed between the inclined surface (15), the housing (3) and the seals (9, 10).