Method of making a valve construction having multiple pistons

Details Method of making a valve construction having multiple pistons Method of making a valve construction having multiple pistons

1982-05-03

1984-07-10

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

137 79, 137315, 291571R, 251357, 251 86, F16K 1738

Patent

active

044587104

ABSTRACT:
A method of making a valve construction comprising the steps of forming the housing to have a plurality of valve seat sections disposed in spaced substantially parallel relation, forming a piston unit to comprise a plate and a plurality of pistons disposed in spaced substantially parallel relation and being carried by the plate as an assembly therewith to be axially movable in the housing under the influence of a condition responsive device, disposing the piston unit as an assembly thereof in the housing so that the pistons are respectively received in the valve seat sections, and forming the plate and the pistons so that the pistons can move relative to each other in the assembly thereof while maintaining the substantially parallel relation thereof during the step of disposing the piston unit in the housing so that the pistons will self-align with their respective valve seat sections as the pistons are being received therein.

REFERENCES:
patent: 1784381 (1930-12-01), O'Stroskie
patent: 1842902 (1932-01-01), Faber
patent: 2929410 (1960-03-01), Morrison
patent: 3972472 (1976-08-01), Kawabata
patent: 4000849 (1977-01-01), Wagner et al.
patent: 4085775 (1978-04-01), Steele, Jr.
patent: 4188145 (1980-02-01), Poling
patent: 4228817 (1980-10-01), Weaver

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