Assertion: valve's spring | /r/CapableOf | permit selected tube assembly
Facets:
Source sentences:
text: More specifically, the invention comprehends providing in a hydraulic valve structure having a body defining a valve chamber and a plurality of ports opening to the chamber, a spool movably disposed in the chamber for selectively controlling fluid flow through the ports and defining an annular shoulder at one end of the valve chamber, a solenoid having a plunger for selectively urging the spool toward the other end of the chamber as an incident of energization of the solenoid, a tube extending coaxially about the plunger and defining a recess opening to the one end of the valve chamber, a washer in the recess coaxially abutting the annular shoulder, a compression spring in the recess coaxially of the plunger urging the washer toward the other end of the valve chamber, and means retaining the spring and washer in association with the tube in the recess whereby the tube, spring and washer may comprise a selected one of a plurality of similar unitary tube assemblies having similar tube and washer elements and different strength springs, permitting the selected tube assembly to have a spring strength coordinated with the characteristics of the spool.