Solenoid actuated pilot valve for irrigation system valve
AssigneeHunter Industries, Inc.
InventorsMichael L. Clark, LaMonte D. Porter
Life of this patent
Estimating the term…
Abstract
A solenoid actuated pilot valve includes a pilot valve housing defining a pilot valve chamber and a solenoid. The solenoid includes and end cap connected to the pilot valve housing, a reciprocable plunger, and a piston having a shaft with a first end connected to and end of the plunger and a second end connected to a piston head. The end cap has a bore through which the shaft of the piston reciprocates and a first port separate from the bore. A first seal on a first side of the piston head is provided for sealing a first end of the first port. A second seal on a second side of the piston head is provided for sealing a first end of a second port in the pilot valve housing.
Claims30
A solenoid actuated pilot valve, comprising:
- a pilot valve housing defining a pilot valve chamber;
- a solenoid including an end cap connected to the pilot valve housing, a reciprocable plunger, and a piston having a shaft with a first end connected to an end of the plunger and a second end connected to a head, the end cap having a bore through which the shaft of the piston reciprocates and a first port separate from the bore;
- a first seal on a first side of the piston head for sealing a first end of the first port;
- and
- a second seal on a second side of the piston head for sealing a first end of a second port in the pilot valve housing.
A three-way solenoid actuated pilot valve comprising:
- a pilot valve housing defining a pilot valve chamber;
- a solenoid having a piston with a shaft that reciprocates through a bore in an end cap that is inserted into the pilot valve housing and a piston head connected to one end of the shaft, the end cap having a first port separate from the bore with a first end opening on an end surface of the end cap and communicating with the pilot valve chamber and a second end opening on a side surface of the end cap;
- a first seal on a first side of the piston head that reciprocates inside the pilot valve housing for sealing the first end of the first port;
- and
- a second seal on a second side of the piston head for sealing a first end of a second port in the pilot valve housing that communicates with the pilot valve chamber.
A solenoid actuated pilot valve, comprising:
- a pilot valve housing defining a pilot valve chamber;
- a solenoid connected to the pilot valve housing and having a piston with a head connected to a shaft that can longitudinally reciprocate in a bore in an end of the solenoid to move the piston head back and forth inside the pilot valve chamber;
- a first side of the piston head being configured to seal a first end of a first port in the end of the solenoid laterally spaced from the bore;
- and
- a second side of the piston head being configured to seal a first end of a second port in the pilot valve housing.
Dependencies are inferred from the claim text.