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 having an axis offset from an axis of the inlet flow passage, and a stationary valve seat fixed to the housing and positioned between the inlet flow passage and an 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 pressure regulating device for a liquid includes a main hollow body having an inlet end and an outlet end for the liquid, which are connected via a longitudinal passage, a tubular valve member, which is slidingly accommodated in the passage and has a regulating end upstream from the flow of the liquid, a seat placed inside the passage, upstream from the valve member, and having a transverse surface formed in the passage to interact with the regulating end of the valve member and define therewith a part having an adjustable width for the liquid. The seat is eccentrically supported in the passage and is formed of one piece with the main body, and is supported proximate to the inlet end for the liquid by a pair of longitudinal support wings substantially parallel to the flow direction.

A unit for regulating or controlling a fluid pressure has a valve housing with an inlet and an outlet. A 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 low-stretch bending movement. A switching film for such a unit is provided also.

A pressure regulator, said pressure regulator comprising a housing containing a channel arranged to communicate a fluid from a fluid inlet to a fluid outlet, said channel comprising a valve seat housing, a valve seat and closure member with said closure member operable with the valve seat and valve seat housing to control flow through the channel; wherein the housing comprises a resilient diaphragm in fluid communication with the fluid and in physical communication with the closure member such that the diaphragm is operable to deform in response to a change in pressure of the fluid and such that deformation of the diaphragm causes the closure member to change position, and; wherein the section of the diaphragm not in fluid communication with the channel, is in fluid communication with the exterior of the regulator via a vent aperture and; wherein the closure member comprises an upstream valve element and downstream valve element, wherein the downstream valve element is a ridge operable with an aperture in the valve seat housing to at least partially control fluid flow, wherein said ridge of the closure member is partially or fully inside said aperture in the valve seat housing when the upstream valve element of the closure member is at or between the fully open position and a predetermined partially open position with the valve seat, to provide a restriction to fluid flow but not to fully obstruct flow.

A pressure regulator includes a regulator housing and a regulator adjustment assembly configured to translate between two fixed positions to provide first and second levels of gas flow through the regulator housing. The regulator adjustment assembly may include an upper button assembly and an adjacent collar assembly that move between two fixed positions relative to each other to provide the different levels of gas flow.

The present invention relates to a balancing valve spool and a pressure regulating valve comprising the balancing valve spool. The balancing valve spool comprises a valve rod; a piston sleeve fixed on the valve rod; and a fixing piece sleeved between the valve rod and the piston sleeve and arranged along a direction in parallel with an axis of the valve rod. In one embodiment of the present invention, by connecting the fixing piece onto an actuator of the valve and arranging the fixing piece between the valve rod and the piston sleeve along the direction of the axis of the valve rod, an effect of guiding the valve rod is achieved and a sealing effect of isolating inlet pressure and outlet pressure is simultaneously achieved. Compared with the related arts, this design has the advantage of simple structure.

A control system for pressure controllers in explosion risk areas has a pressure controller with adjusting screw to control the pressure inside a conduit used to transport explosive gas. An adapter with a hole is adapted to receive the head of the adjusting screw. An electrical motor adapted to be used in risk explosion areas is provided with a driving shaft connected to the adapter. A support with body has a first end wherein a first hole is obtained to receive a shank of the pressure controller and a second end wherein a second hole is obtained to receive the adapter. A cable box connected to a telecommunication network is provided to remotely control the motor.

A lid of gas pressure regulator has a top segment, a surrounding wall, a pressing segment, and a gap. The surrounding wall protrudes downward and annularly from an annular edge of the top segment. The pressing segment protrudes transversely, outward and annularly from a bottom edge of the surrounding wall, and extends upward. The gap is formed between the surrounding wall and the pressing segment. Because the pressing segment is thinned and the gap is formed between the pressing segment and the surrounding wall, the overall volume and the weight can be reduced, and the pressing segment has sufficient height to prevent an opening edge of the seat from being bent at a large angle and fracture.

A lid of gas pressure regulator has a top segment, a surrounding wall, a pressing segment, and a gap. The surrounding wall protrudes downward and annularly from an annular edge of the top segment. The pressing segment protrudes transversely, outward and annularly from a bottom edge of the surrounding wall, and extends upward. The gap is formed between the surrounding wall and the pressing segment. Because the pressing segment is thinned and the gap is formed between the pressing segment and the surrounding wall, the overall volume and the weight can be reduced, and the pressing segment has sufficient height to prevent an opening edge of the seat from being bent at a large angle and fracture.

A thermostatic valve, which includes a main body portion, a cavity formed as part of a main body portion, and an inner wall integrally formed with the main body portion adjacent the cavity. A circumferential flange is integrally formed with the inner wall, such that the circumferential flange surrounds a valve cavity. A valve member is attached to the inner wall disposed in the valve cavity, and a flow aperture is formed as part of the inner wall. Fluid flows through the flow aperture into the valve cavity, and when the pressure in the valve cavity is above a predetermined value, the valve member contacts the inner wall, preventing fluid from flowing through the flow aperture.