Pipe coupling

Details Pipe coupling Pipe coupling

1989-09-06

1990-08-28

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

13761404, 251356, F16L 3728

Patent

active

049517104

ABSTRACT:
A pipe coupling comprising a cylindrical body having a fluid passage and a valve for opening and closing the fluid passage, in which the valve has a head portion and a cylinder portion, both made of chemicals-resistant polymers, and the cylinder portion has a plurality of holes penetrating the cylinder wall in the diametrical directions, the holes being formed alternately in the positions shifted in the circumferential direction and the axial direction of the cylinder portion, resulting in that the cylinder portion has elasticity in the axial direction.

REFERENCES:
patent: 4137955 (1979-02-01), Carlson
patent: 4421296 (1983-12-01), Stephens
patent: 4700744 (1987-10-01), Rutter et al.

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