| 摘要 |
<p>Reducing valve for compressed gas with ```a piston (2) arranged in a valve housing (3) and capable of being displaced against the force of a compression spring (8) together with a first piston section (4) and a second piston section (5) such that the external diameter of the second piston section (5) is greater than the external diameter of the first piston cylinder (4); ```the piston (2) possesses an inner space (13) provided with a valve seat (19), an inlet channel (18) for leading compressed gas to the valve seat (19) and a valve body (12) capable of being displaced with respect to the piston (2) and connected to the valve housing (3), which is designed to close the valve seat (19) together with; ```a control pressure space (21) contained between the second piston section (5) and an internal wall of the valve housing (22) which is connected to the inner piston space (13) by means of a control pressure pipe (20) and possesses a discharge opening (23) for the compressed gas, whereby the dimensions of the control pressure space (21) are such that the second piston section (5) experiences a force from the compressed gas which opposes the force of the compression spring (8) and which presses the valve seat (19) against the valve body (12) and with; ```a one-way valve (24, 25) in the control pressure pipe (20) which opens to the control pressure space when subjected to pressure greater than a predetermined limiting value.</p> |
