Fluid pressure regulator
First Claim
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1. A fluid pressure regulator capable of adjustably setting a pre-selected cut-off pressure, the pressure regulator comprising:
- a piston having a piston body with a piston face on an upper surface thereof, with side walls and with a lower surface and further having a piston stem with a removed first end having walls defining a stem face and a second end;
a first valve body having an inner wall surface defining a first chamber, the first chamber walls defining a high pressure port, defining a low pressure port and further having walls defining a stem receiving member dimensioned to maintain the stem face of said piston opposite one of said high pressure or low pressure ports;
a second valve body having walls defining a piston head chamber for receipt of said piston head therein;
first sealing means for providing a substantially fluid tight seal between the outer walls of the piston stem and the walls of the stem receiving member of said first valve body;
second sealing means for providing a substantially fluid tight seal between the head of said second valve body and the side walls of the piston body;
first bias means for engaging said second valve body and the piston body to urge the stem of said piston away from the high pressure port;
means for providing fluid communication between the first chamber and the piston head chamber;
valve seat located between the stem face of said piston stem and one of said high pressure or low pressure ports of said first valve body; and
coupling means capable of adjustably engaging said first and said second valve bodies to vary the distance between the stem face of said piston stem and said first valve body;
wherein adjusting said coupling means to increase the distance between the stem face and the first valve body will increase the cut-off pressure and decreasing the distance will decrease the cut-off pressure.
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Abstract
A fluid pressure regulator capable of adjustably setting a cut-off pressure between an upper and a lower limit having a two-piece valve body where the two pieces are threadably joined such that adjusting the distance between the two pieces of the valve body moves a piston stem valve operating a high pressure port towards or away from the high pressure port while not changing the distance between the spring engaging the piston and the piston head.
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Citations
17 Claims
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1. A fluid pressure regulator capable of adjustably setting a pre-selected cut-off pressure, the pressure regulator comprising:
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a piston having a piston body with a piston face on an upper surface thereof, with side walls and with a lower surface and further having a piston stem with a removed first end having walls defining a stem face and a second end; a first valve body having an inner wall surface defining a first chamber, the first chamber walls defining a high pressure port, defining a low pressure port and further having walls defining a stem receiving member dimensioned to maintain the stem face of said piston opposite one of said high pressure or low pressure ports; a second valve body having walls defining a piston head chamber for receipt of said piston head therein; first sealing means for providing a substantially fluid tight seal between the outer walls of the piston stem and the walls of the stem receiving member of said first valve body; second sealing means for providing a substantially fluid tight seal between the head of said second valve body and the side walls of the piston body; first bias means for engaging said second valve body and the piston body to urge the stem of said piston away from the high pressure port; means for providing fluid communication between the first chamber and the piston head chamber; valve seat located between the stem face of said piston stem and one of said high pressure or low pressure ports of said first valve body; and coupling means capable of adjustably engaging said first and said second valve bodies to vary the distance between the stem face of said piston stem and said first valve body; wherein adjusting said coupling means to increase the distance between the stem face and the first valve body will increase the cut-off pressure and decreasing the distance will decrease the cut-off pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification