| 摘要 |
<p>A pressure control valve includes a housing, a piston within the housing, a biasing means within the housing for biasing the piston to seat in a first position for limiting fluid communication between an inlet port of the housing and an outlet port of the housing, and an insert cooperating with the biasing means for setting a pressure differentia l between an inlet side of the piston and an outlet side of the piston that unseats the piston from the first position for establishing fluid communication between the inlet port and the outlet port.</p> |
