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PCE
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IPC Subgroup
F16K 17/04

spring-loaded

Introduced: September 1968

Last revised: January 2006

Full Title

Safety valves; Equalising valves > opening on surplus pressure on one side; closing on insufficient pressure on one side > spring-loaded

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
Subclass:
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING

3 direct subcodes

Child Classifications

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  • F16K 17/06 with special arrangements for adjusting the opening pressure
  • F16K 17/08 with special arrangements for providing a large discharge passage
  • F16K 17/1 with auxiliary valve for fluid operation of the main valve