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US 2022/0025982 A1Published application
Gas safety valve and gas supply line
AssigneeGas Stop Europe BV
InventorChris Andrew LEWIS
Life of this patent
Estimating the term…
Abstract
A gas safety valve for controlling a gas flow includes a valve body providing a body inlet port for coupling to a first gas supply and a body outlet port for coupling to an appliance, the valve body extending along a longitudinal axis between the body inlet port and the body outlet port, the valve body further providing an inlet bore extending downstream from the body inlet port, and an outlet bore extending to the body outlet port. A valve has a valve chamber having a valve inlet and a valve outlet, a ball located within the valve chamber and a valve seat provided at the valve outlet such that the ball is retained in the valve chamber upstream of the valve seat. The valve body includes an internal junction positioned upstream of the valve inlet, and a side inlet port.
Claims20
A gas safety valve for controlling a gas flow comprising:
- a valve body providing a body inlet port for coupling to a first gas supply and a body outlet port for coupling to an appliance, the valve body extending along a longitudinal axis between the body inlet port and the body outlet port, the valve body further providing an inlet bore extending downstream from the body inlet port, and an outlet bore extending to the body outlet port;
- a stem having a stem axis extending away from the valve body, the stem being supported at a first end by a collar mounted to the valve body;
- a pressure gauge mounted to a second, distal end of the stem for displaying a gas pressure;
- and
- a valve provided within the valve body between the inlet bore and the outlet bore, the valve comprising a valve chamber having a valve inlet and a valve outlet, a ball located within the valve chamber and a valve seat provided at the valve outlet such that the ball is retained in the valve chamber upstream of the valve seat,
- wherein the ball is arranged to:
- in normal use, rest away from the valve seat to allow a supply of gas to the body outlet port when a pressure difference between the inlet bore and the outlet bore is at an allowable level, or below, where a rate of gas flow in the valve chamber is not sufficient to lift the ball up into contact with the valve seat, and
- to seal against the valve seat to shut off the supply of gas to the body outlet port when a pressure difference between the inlet bore and the outlet bore exceeds the allowable level and is capable of creating sufficient gas flow through the valve chamber to lift the ball into contact with the valve seat;
- and
- wherein the valve body additionally comprises:
- an internal junction positioned upstream of the valve inlet;
- and
- a side inlet port, the side inlet port feeding into the inlet bore at the junction for supplying an appliance, when coupled downstream of the gas safety valve, with a second gas supply when the second gas supply is coupled to the side inlet port.
10 more elements
A gas supply line comprising:
- a gas safety valve for controlling a gas flow comprising:
- a valve body providing a body inlet port for coupling to a first gas supply and a body outlet port for coupling to an appliance, the valve body extending along a longitudinal axis between the body inlet port and the body outlet port, the valve body further providing an inlet bore extending downstream from the body inlet port, and an outlet bore extending to the body outlet port;
- a stem having a stem axis extending away from the valve body, the stem being supported at a first end by a collar mounted to the valve body;
- a pressure gauge mounted to a second, distal end of the stem, for displaying a gas pressure;
- and
- a valve provided within the valve body between the inlet bore and the outlet bore, the valve comprising a valve chamber having a valve inlet and a valve outlet, a ball located within the valve chamber and a valve seat provided at the valve outlet such that the ball is retained in the valve chamber upstream of the valve seat,
- wherein the ball is arranged to:
- in normal use, rest away from the valve seat to allow a supply of gas to the body outlet port when a pressure difference between the inlet bore and the outlet bore is at an allowable level, or below, where a rate of gas flow in the valve chamber is not sufficient to lift the ball up into contact with the valve seat, and
- to seal against the valve seat to shut off the supply of gas to the body outlet port when a pressure difference between the inlet bore and the outlet bore exceeds the allowable level and is capable of creating sufficient gas flow through the valve chamber to lift the ball into contact with the valve seat;
- and
- wherein the valve body additionally comprises:
- an internal junction positioned upstream of the valve inlet;
- and
- a side inlet port, the side inlet port feeding into the inlet bore at the junction for supplying an appliance downstream of the gas safety valve, when coupled, with a second gas supply when a second gas supply is coupled to the side inlet port,
- the gas supply line further comprising:
- a body inlet fitting mounted in the body inlet port of the gas safety valve;
- a first gas supply positioned upstream of the gas safety valve and coupled to the body inlet fitting for supplying gas to the gas safety valve;
- a side inlet fitting mounted in the side inlet port of the gas safety valve;
- a second gas supply positioned upstream of the gas safety valve and coupled to the side inlet fitting for supplying gas to the gas safety valve;
- a gas regulator coupled to the body outlet port of the gas safety valve;
- a gas line coupled to the gas regulator for conveying gas from the gas regulator between an upstream end and a downstream end thereof;
- and
- an appliance coupled to the downstream end of the gas line arranged to receive gas from the first or second gas supply.
20 more elements
Dependencies are inferred from the claim text.