Patent ID: 11933408
Assignee: NELSON IRRIGATION CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A flow control device comprising:
a housing including an inlet and an outlet;
a flow conduit disposed in the housing, wherein the inlet, the flow conduit, and the outlet define a flow passage;
a valve seat disposed in the housing downstream of the inlet;
a shuttle movably disposed in the housing and displaceable between a closed position engaging the valve seat to close the flow passage and an open position spaced from the valve seat to open the flow passage;
a sealed chamber defined between the housing and the flow conduit;
a port coupled with a source of pressurized fluid, the port communicating with the sealed chamber, wherein the shuttle is displaceable between the closed position and the open position in a manner that is influenced by a pressure in the sealed chamber; and
a spring acting between the flow conduit and the shuttle, the spring biasing the shuttle toward the closed position.