IPC Subgroup
F16K 21/08 with ball-shaped closing members
Introduced: September 1968
Last revised: January 2006
Full Title
Fluid-delivery valves > Self-closing valves, i.e. closing automatically after operation > in which the closing movement, either retarded or not, starts immediately after opening > with ball-shaped closing members
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