Abstract:
A fluid pressure regulator comprises: a housing (1) having a fluid inlet (2) and a fluid outlet (3); a valve (4) positioned inside the housing (1); fluid transport means (8) provided in the valve (4); pressure setting means (5); and a space (6) defined between one end of the valve (4) and an end wall of the housing (1). The valve (4) is moveable relative to the housing (1) in response to a change in pressure within said space (6) between a first position which at least partially aligns the fluid transport means (8) with each of said inlet (2) and said outlet (3) and a second position in which there is no alignment of the fluid transport means (8) with at least one of said inlet (2) and said outlet (3). A passage (7) is provided in open communication between said space (6) and one of said inlet (2) said outlet (3), or said transport means (8).
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a body having an internal cavity for receiving a pressurized medium and inlet and outlet ports that enable a pressurized medium to enter the internal cavity at a first pressure and exit at a second pressure. The exemplary pressure regulator also includes a control piston disposed within the internal cavity that is configured to move in response to a change in pressure within the internal cavity. The pressure regulator of this embodiment also includes a damping feature within the internal cavity that is configured to oppose the movement of the control piston. Other embodiments of pressure regulators and systems are also provided.
Abstract:
A pneumatic pressure regulator assembly (10) including a regulator housing (12) having an inlet (50) adapted for fluid communication with a supply of pneumatic pressure, an outlet (52) adapted to provide pneumatic pressure to a downstream pneumatically actuated device at a regulated pressure, and a regulator valve assembly (46). The regulator valve assembly (46) has a valve member (58) movably supported within the regulator housing (12) between an open and a closed position. A piston assembly (48) acts to bias the valve member (58) to its open position when the outlet pressure is below a predetermined value. The piston assembly (48) includes a pressure responsive surface (106) defining a geometric shape with a major and a minor axis wherein the major axis A is greater than the minor axis B. The piston assembly (48) is responsive to pneumatic pressure flowing between the inlet (50) and the outlet (52) to reduce the biasing force acting on the valve member (58) such that the valve member (58) moves to its closed position when the outlet pressure exceeds a predetermined value.
Abstract:
A valve body (15) is formed of two half sections (16, 18) which are secured together to define a drain line passage (12) and to confine therebetween a thin gate valve (45) between a lower open position and an upper closed position. Actuator (110) includes flexible bellows (80) confined between a cylindrical wall (88) and cover (110). Valve body (15) and bellows (80) define an expandible chamber connected by a bottom port or extension line (97) to the drain line (12). If sewage water backs up, air within the fluid chamber expands bellows (80) upwardly to close valve (45). When sewage water flows from the drain line (12), bellows (80) moves downwardly due to differential pressure and top plate (102), automatically returning the valve blade (45) to its open position.
Abstract:
A fluid regulating device includes a regulator valve (12) having an inlet (14), an outlet (16), and a valve port (18) disposed between the inlet (14) and the outlet (16). An actuator (20) is coupled to the regulator valve (12) and includes a valve disc (22) that displaces between a closed position and an open position. The device also includes an overpressure protection device (25) adapted to stop flow from the inlet to the outlet when pressure in a control cavity reaches a predetermined level. The overpressure protection device (25) includes a sensing tube (28) having a first end (29) in fluid communication with the control cavity (27) and a second end (30) in fluid communication with the outlet (16). The sensing tube (28) has a first portion extending parallel to the flow axis. One or more apertures (34) are disposed in the sensing tube (28) adjacent to the second end (30), and each of the apertures (34) has a centerline that is perpendicular to the flow axis.
Abstract:
A pressure regulator has a plug (26) dividing the housing (12) into upper and lower chambers, which are connected by a vent (36). A yoke (42) is adapted to selectively close a fluid path (47) in the plug (26). A diaphragm (58) located in the upper chamber (61) responds to outlet pressure against a bias spring (64) to open the plug (26) as the outlet pressure decreases. A second bias spring (112) may also be included.
Abstract:
A fluid pressure regulator comprises: a housing (1) having a fluid inlet (2) and a fluid outlet (3); a valve (4) positioned inside the housing (1); fluid transport means (8) provided in the valve (4); pressure setting means (5); and a space (6) defined between one end of the valve (4) and an end wall of the housing (1). The valve (4) is moveable relative to the housing (1) in response to a change in pressure within said space (6) between a first position which at least partially aligns the fluid transport means (8) with each of said inlet (2) and said outlet (3) and a second position in which there is no alignment of the fluid transport means (8) with at least one of said inlet (2) and said outlet (3). A passage (7) is provided in open communication between said space (6) and one of said inlet (2) said outlet (3), or said transport means (8).