Patent ID: 9372485
Filing Date: 2016-06-21
CPC Classification: F15B,F16K,G05D,Y10T

Claim Text:
1. A flow rate control apparatus comprising: a body defining passages therein through which a pressure fluid can flow, the body including a pair of ports through which the pressure fluid may be supplied and discharged, discharge ports through which the pressure fluid on a secondary side may be discharged, wherein said passages are connected to the ports and the discharge ports, and through which the pressure fluid flows; an adjustment mechanism for adjusting a flow rate of the pressure fluid flowing from a first of the ports to a second of the ports, wherein the adjustment mechanism comprises a housing external to the body and detachably mounted to the body; and at least two switching valves for switching a communication state of the ports, the passages, and the discharge ports; the adjustment mechanism includes a throttle mechanism provided to the housing for adjusting a flow rate of the pressure fluid flowing between the first port and the second port, and an opening/closing valve provided in the housing configured to switch a communication state of the first port and the second port, wherein the flow rate of the pressure fluid is increased or decreased in a stepwise manner under a switching action of the opening/closing valve.