Method of making a valve construction having multiple piston mea

Details Method of making a valve construction having multiple piston mea Method of making a valve construction having multiple piston mea

1980-04-18

1981-11-24

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23P 1500, F16K 2704

Patent

active

043015867

ABSTRACT:
A valve construction having a housing provided with a chamber and ports leading to the chamber and having an axially movable piston unit disposed in the chamber to interconnect certain of the ports together in relation to the axial position of the piston unit that is caused by a condition responsive device operatively associated with the piston unit, the piston unit comprising a plurality of pistons disposed in spaced parallel relation and being secured together to be axially moved in unison in the chamber under the influence of the condition responsive device.

REFERENCES:
patent: 3364942 (1968-01-01), Ney et al.
patent: 3960124 (1976-06-01), Payne
patent: 3972472 (1976-08-01), Kawabata
patent: 3989058 (1976-11-01), Jackson

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