A unit for the regulation for control of a fluid pressure, having at least one housing section and a switching film connected to the at least one housing section. A chemically inert, non-rubber-like PTFEswitching film switching film is disposed in the valve housing and switches at pressure differences of 1 mbar to 250 mbar for regulating, opening or blocking a flow of a fluid from the inlet to the outlet. The switching film is formed of a fluorine and carbon containing polymer material. The switching film has a plate-shaped flat body with a bending region and has a central closure region surrounded by the bending region. The bending region, when switching the switching film, moves the central closure region relative to a valve seat of the valve housing in an axial direction of the plate-shaped flat body toward or away from the valve seat by a stretch free or low-stretch bending movement.

A pressure regulator including: a housing including an inlet flow passage and an outlet flow passage; a plunger reciprocally mounted in the housing and including a plunger flow passage; an inlet to the plunger flow passage, wherein the inlet is aligned with a plane oblique to an axis of the plunger flow passage; and a valve seat fixed to the housing and positioned between the inlet flow passage and the inlet to the flow passage of the plunger, wherein the valve seat is configured to receive and abut the inlet to the flow passage of the plunger.

A gas pressure regulating device is provided which comprises a housing, in which a first mounting cavity for installing a level-1 depressurization mechanism and a second mounting cavity for installing a level-2 depressurization mechanism are provided in sequence along the air intake direction; the level-1 depressurization mechanism comprises a sliding sleeve, and a mounting tubing which is communicated with the gas inlet is formed inside the first mounting cavity, and the sliding sleeve is slidably assembled between an outer wall of the mounting tubing and an inner wall of the first mounting cavity; the other end of the sliding sleeve is provided with a gas discharge orifice and a sealing gasket, and the gas inlet connector is in communication with the first mounting cavity through the gas discharge orifice; the sliding sleeve slides along the axial direction to adjust the openness of the gas outlet to realize the level-1 depressurization. The gas pressure regulating device provided comprising two levels of depressurization mechanisms, which is simple in structure and fewer in parts. Further, the device is capable of effectively reducing the risk of occurrence of dangerous accidents such as product leakage due to failure of parts, thereby effectively guaranteeing stability and accuracy of pressure regulation performance.

A channel block for a liquid chemical dosing apparatus. The channel block has a process outlet; a chemical liquid inlet; an evacuation outlet; a calibration column outlet; channels provided within the channel block that connect at least the process outlet, the chemical liquid inlet, the evacuation outlet and the calibration column outlet; a pressure indicator mounted to the channel block to measure the pressure of the chemical liquid entering through the chemical liquid inlet; a additional regulation valve mounted to the channel block upstream of at least one of the process outlet and the calibration column outlet; a evacuation regulation valve mounted to the channel block upstream of the evacuation outlet; at least three control valves mounted to the block configured to control the chemical liquid passing through the channels.

A fuel cell arrangement has an anode connected to an H2 inflow and a cathode connected to an O2 inflow. A differential pressure control device is arranged between the H2 inflow and the O2 inflow for controlling a differential pressure between the H2 inflow and the O2 inflow. The differential pressure control device has a fluid connection between the H2 inflow and the O2 inflow, in which a deflectable diaphragm is arranged, to which a pin is coupled, which, when the diaphragm is deflected, opens a valve arranged in the H2 inflow.

A channel block for a liquid chemical dosing apparatus. The channel block has a process outlet; a chemical liquid inlet; an evacuation outlet; a calibration column outlet; channels provided within the channel block that connect at least the process outlet, the chemical liquid inlet, the evacuation outlet and the calibration column outlet; a pressure indicator mounted to the channel block to measure the pressure of the chemical liquid entering through the chemical liquid inlet; a additional regulation valve mounted to the channel block upstream of at least one of the process outlet and the calibration column outlet; a evacuation regulation valve mounted to the channel block upstream of the evacuation outlet; at least three control valves mounted to the block configured to control the chemical liquid passing through the channels.

Apparatus are configured to monitor lifespan of parts on a pressure regulator. These configurations may include sensors that generate signals in response to movement of parts on the pressure regulator. Processing circuitry can process the signals to identify data that corresponds to deflection of a spring inside of the pressure regulator. This data may correlate with duty cycle of a diaphragm. In one implementation, utilities can use the duty cycle to gauge useable lifespan of the diaphragm as well as other operating conditions that may prevail on the pressure regulator.

A pressure reducing valve includes a valve housing, plunger, pressure sensing cavity, and biasing member. The valve housing includes a valve inlet and valve outlet in selective fluid communication with each other. The plunger is in the valve housing and movable between a closed position and open position. The plunger is positioned downstream from the valve inlet and upstream from the valve outlet. The plunger includes a venturi and a channel. The venturi is within the plunger and has a venturi inlet and venturi outlet. The channel is within the plunger and is in fluid communication with the venturi. The pressure sensing cavity is in fluid communication with the channel. The biasing member exerts a biasing force on the plunger toward the open position. The channel is in fluid communication with the pressure sensing cavity to provide a fluid pressure that is lower than the outlet pressure during flow.

A pressure regulating device includes a pressure stabilizer including a valve body, a pressure regulating assembly, and a switching assembly. The valve body has an inlet portion, a decompression chamber communicating with the inlet portion, and an outlet portion. The inlet portion has an inlet port for connecting to an outlet opening of a portable gas tank. The outlet portion communicates with the decompression chamber and has an outlet port. The pressure regulating assembly is disposed in the decompression chamber. The pressure regulating assembly regulates the pressure of gas outputted by the portable gas tank to form an output gas with a predetermined pressure. The switching assembly is disposed on the outlet portion and is located between the decompression chamber and the outlet port and is manipulatable to block or open the output gas, thereby regulating the pressure of the output gas outputted by the portable gas tank.

According to one embodiment a gas pressure regulator valve is provided that includes a valve body with an inlet gas conduit and an outlet gas conduit, a pressurized gas chamber into which the inlet gas flows after passing through a regulation valve and which is in fluid communication with the outlet gas conduit. The valve also includes a diaphragm having a central protuberance which houses a valve member. A closure cap closes the valve body. Adjusting means is provided for adjusting the regulated nominal pressure of the gas output from the regulator valve. An air chamber and the pressurized gas chamber are delimited in part by the diaphragm which is assembled and fixed between the valve body and the closure cap having the possibility of being axially displaced. The regulator valve further includes a rigid cover which covers the central protuberance, cooperating the cover with the closure cap in the event of an unexpected high pressure of the inlet gas to limit the displacement of the diaphragm.