Balanced valve with unidirectional oleo-dynamic unlocking, in pa

Details Balanced valve with unidirectional oleo-dynamic unlocking, in pa Balanced valve with unidirectional oleo-dynamic unlocking, in pa

1980-07-08

1982-04-06

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Flow rate responsive

91420, F15B 1301

Patent

active

043230954

ABSTRACT:
The invention relates to an improved and balanced valve with unidirectional hydraulic unlocking, in particular to allow a number of hydraulic actuators to be series controlled at high pressure.
This type of valve comprises: a check valve (11) and a unidirectional valve (14) with hydraulic unlocking; a pilot piston (17) acts on the closing mechanism (14a) of said valve (14) and is subjected, on a surface of a pre-established area, to the pressure existing in a first orifice (12) of entry (or exit) of the same valve; said valve is further provided with a device for regulating and limiting the pressure that supplies to the pilot piston (17) a control pressure between pre-established minimum and maximum values.

REFERENCES:
patent: 3266381 (1966-08-01), Rohde

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