| 摘要 |
The amplifier has a valve housing (1) defining a control fluid circuit and two working fluid circuits. The working and control fluids are fed into the valve housing at different pressures. Deformable membranes (8,16) cause, under the action of the control fluid and via the second circuit, a commutation between a rest position, preventing any communication between an inlet orifice (2) and an outlet orifice (3) of the first circuit, and a working position where the orifices communicate. A secondary piston (30) prevents, in the rest position, all working fluid consumption by the second circuit.
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