A vent limiting device adapted to be operably coupled to an exhaust vent of a fluid regulator. The vent limiting device includes a housing, a poppet disposed in the housing, and a retaining element arranged to retain the poppet in the housing. The housing has a fluid passageway extending between a fluid inlet and a fluid outlet. The poppet is movably disposed in the housing, responsive to pressure at the fluid outlet, to control fluid flow through the fluid passageway. The housing includes one or more retaining features that engage the retaining element to retain the retaining element in the housing.

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.

The present invention discloses a pressure regulating valve, which comprises an actuator and a valve body, wherein communicating passages are arranged between a chamber of the valve body and a chamber of the actuator, a pressure tapping pipe is further arranged in the chamber of the valve body, one end of the pressure tapping pipe is connected with the communicating passage and the other end of the pressure tapping pipe is suspended. By adopting the embodiment of the pressure tapping structure in the pressure regulating valve provided by the present invention, the performance of the pressure regulating valve in a flow accuracy range is improved.

A pressure relief valve for a gas pressure regulator includes: a deformable and gas-tight, laminar element; an outflow channel that allows the passage of the gas between one side and the other of the laminar element including a precisely-sized hole; a shutter removably associated with the laminar element through a coupler that defines, for the shutter, a closed position of the outflow channel and an open position of the outflow channel; an elastic element interposed between the shutter and the laminar element in order to push the shutter towards the closed position. The couple includes a through hole belonging to the laminar element and a shaft slidingly inserted in the through hole, and the shutter is operatively connected to the shaft. The outflow channel is distinct from the through hole, as sealing is provided to prevent the passage of the gas between the through hole and the shaft.

Device(s) and techniques determine if a gas regulator supplying gas at a regulated pressure to a gas meter (e.g., the gas meter of a house or business) within a gas distribution system has one or more lock-up failure events or venting events, wherein gas is vented to the atmosphere. In an example, a sensor obtains information indicating a relative position of a stop stem of a gas regulator and a diaphragm pin of the gas regulator. As pressure increases within the regulator, the diaphragm pin moves toward and/or touches the stop stem. The gas pressure increase may result from debris in the regulator that prevents a valve from fully closing. A signal may be sent from the regulator and/or associated gas meter. The signal may contain information based at least in part on data from the sensor, and which may indicate a lock-up failure event or a venting event by the gas regulator.

Valve device, in particular for an exhaust gas section of an internal combustion engine, includes a valve housing with an inlet and outlet, a valve seat arranged between the inlet and outlet and having a valve opening, closeable by a valve closing member pressed against the valve seat by a predetermined force, and a diaphragm acting on the valve closing member. A first control chamber is separated from a second control chamber by the diaphragm so that the valve is switched by a pressure difference between the first control chamber and second control chamber. For reliable opening even under adverse operating conditions, the diaphragm is connected to the valve closing member, at least over a partial range of a possible stroke of the valve closing member, via a gear mechanism to translate movement of the diaphragm into movement of the valve closing member at a lower speed.

A gas pressure reducer with a safety function in the case of under-pressure includes a lever having a first portion pivotally mounted on a body about a first axis and adapted to seal the gas intake, and a second portion pivotally mounted on the first portion about a second axis and cooperating with a finger secured to a flexible diaphragm.

A combination pressure regulator includes a regulator body having an inlet port, an outlet port, and a combined inlet and outlet port. A first pressure regulator includes a first diaphragm, a first valve assembly, and a first biasing member that applies a first bias force to the first diaphragm to establish a first pressure regulator setting. A second pressure regulator includes a second diaphragm, a second valve assembly, and a second biasing member that applies a second bias force to the second diaphragm to establish a second pressure regulator setting. An input portion of the first pressure regulator is in fluid communication with the inlet port. An output portion of the second pressure regulator is in fluid communication with the outlet port. An output portion of the first pressure regulator and an input portion of the second pressure regulator are in fluid communication with the combined inlet and outlet port.

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.

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.