A gas regulator includes a valve chamber body that houses two valves of the regulator. Valve elements that move to open and close the two valves are received via a same opening into the valve chamber body, which is closed by a plug. The plug can define a first valve seat as well as a piercing element used to pierce a compressed gas cylinder. A retainer can hold a gasket at a valve seat as well as provide a bore or other support for a valve element and valve element spring.

A gas regulator includes a valve chamber body that houses two valves of the regulator. Valve elements that move to open and close the two valves are received via a same opening into the valve chamber body, which is closed by a plug. The plug can define a first valve seat as well as a piercing element used to pierce a compressed gas cylinder. A retainer can hold a gasket at a valve seat as well as provide a bore or other support for a valve element and valve element spring.

A fluidic device comprises an inlet and an outlet connected by a body forming a channel between the inlet and the outlet. The fluidic device further comprises a non-return valve shaped to prevent a fluid from passing from the outlet to the inlet, and a flow restrictor shaped to allow a fluid to pass from the inlet to the outlet at a first flow rate when the differential pressure between the outlet and the inlet is below a threshold(S). Fluid passes from the inlet to the outlet at a second flow rate, significantly lower than the first flow rate, when the differential pressure between the outlet and the inlet is above the threshold.

Provided is a direct-fit vertical gas proportional valve, including a valve body, a gas shut-off component and a gas proportional control component. The valve body is internally provided with first and second valve chambers. A first valve hole is provided on the first valve chamber. The gas shut-off component is fixedly connected to the first valve chamber. A gas inlet is provided on the first valve chamber and is configured to connect the valve body to a gas source. The second valve chamber is divided into upper and lower proportional chambers. The first valve chamber is connected with the upper proportional chamber. The gas proportional control component is configured to control a size of a connection area between the upper and the lower proportional chambers, and a gas outlet is provided on the second valve chamber and connected with the lower proportional chamber.

Provided is a direct-fit vertical gas proportional valve, including a valve body, a gas shut-off component and a gas proportional control component. The valve body is internally provided with first and second valve chambers. A first valve hole is provided on the first valve chamber. The gas shut-off component is fixedly connected to the first valve chamber. A gas inlet is provided on the first valve chamber and is configured to connect the valve body to a gas source. The second valve chamber is divided into upper and lower proportional chambers. The first valve chamber is connected with the upper proportional chamber. The gas proportional control component is configured to control a size of a connection area between the upper and the lower proportional chambers, and a gas outlet is provided on the second valve chamber and connected with the lower proportional chamber.