FORCE EQUILIBRIUM OF A VALVE ROD DUE TO INTERNAL PRESSURE EQUALIZATION
First Claim
1. A safety shut-off valve for use with a gas regulator, the safety shut-off valve comprising:
- a housing including an internal chamber configured to regulate pressure in a fluid;
a valve rod disposed in the housing and configured to control a valve for interrupting the fluid in the internal chamber;
a vent chamber configured to receive ambient air and to maintain pressure equalization of the ambient air and the fluid within a maximum pressure of the fluid; and
a vent line disposed in a center of the valve rod and configured to provide fluid communication of the ambient air between the vent chamber and an outside of the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus includes a safety shut-off valve for use with a gas regulator. The safety shut-off valve includes a housing, a valve rod, a vent chamber, and a vent line. The housing includes an interior chamber configured to regulated pressure in a fluid. The valve rod is disposed in the housing and controls a valve for interrupting the fluid in the internal chamber. The vent chamber receives ambient air and maintains pressure equalization of the ambient air and the fluid within a maximum pressure of the fluid. The vent line is disposed in a center of the valve rod and provides fluid communication of the ambient air between the vent chamber and an outside of the housing.
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Citations
20 Claims
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1. A safety shut-off valve for use with a gas regulator, the safety shut-off valve comprising:
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a housing including an internal chamber configured to regulate pressure in a fluid; a valve rod disposed in the housing and configured to control a valve for interrupting the fluid in the internal chamber; a vent chamber configured to receive ambient air and to maintain pressure equalization of the ambient air and the fluid within a maximum pressure of the fluid; and a vent line disposed in a center of the valve rod and configured to provide fluid communication of the ambient air between the vent chamber and an outside of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A valve rod located in a housing of a safety shut-off valve for use with a gas regulator, the valve rod comprising:
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a vent chamber configured to receive ambient air and to maintain pressure equalization of the ambient air and a fluid within a maximum pressure of the fluid; and a vent line disposed in a center of the valve rod and configured to provide fluid communication of the ambient air between the vent chamber and an outside of the housing, wherein the valve rod is configured to control a valve for interrupting the fluid in an internal chamber of the housing. - View Dependent Claims (10, 11, 12)
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13. A method for a safety shut-off valve for use with a gas regulator comprising:
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providing fluid communication of ambient air between a vent chamber in a housing of a safety shut-off valve and an outside of the housing; receiving ambient air in the vent chamber; receiving fluid in an internal chamber in the housing; maintaining pressure equalization of the ambient air and the fluid within a maximum pressure of the fluid; and interrupting the fluid received in the internal chamber using a valve connected to a valve rod. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification