Sectional valve having dual pressure relief

Details Sectional valve having dual pressure relief Sectional valve having dual pressure relief

1984-03-23

1985-12-31

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

13759612, F15B 1308

Patent

active

045614636

ABSTRACT:
A sectional valve having dual pressure relief provide high pressure relief for the hoist or lift function while auxiliary functions such as tilt, not requiring high pressure, are monitored by a low pressure relief valve. Spool position in one of the valve sections determined which functions become operative and which relief valve monitors the system.

REFERENCES:
patent: 3324881 (1967-06-01), Keir
patent: 3324882 (1967-06-01), Keir
patent: 3416561 (1968-12-01), Kokaly
patent: 3811471 (1974-05-01), Murase et al.
patent: 3934742 (1976-01-01), Tennis

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