A fluid control valve is provided, comprising a valve body configured with an inlet port extending into an inlet chamber, and an outlet port extending from an outlet chamber. The inlet and outlet chambers are partitioned by a sealing bridge. A control chamber accommodates a flexible sealing diaphragm deformable between a sealing position in which it sealingly bears over the sealing bridge and seals a fluid flow path extending between the inlet and outlet chambers, and an open position in which fluid flow along the flow path is enabled. An inlet path along the fluid flow path is longer than an outlet path therealong. An inlet radii of the sealing diaphragm is longer than an outlet radii of the sealing diaphragm.
F16K 7/02 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm
F16K 31/126 - Operating meansReleasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
F16K 7/12 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm
A PRV is provided, comprising an inlet, an outlet, and a pressure regulating system therebetween to maintain a set pressure at the outlet. The PRV further comprises a selection system configured to select between the two working pressures based on the pressure of the fluid at the inlet of the PRV, and to direct the pressure regulating system to maintain the set pressure at the outlet at the selected working pressure. The selection system comprises a pressure-motion transducer for directing the set pressure when in pressure communication with the inlet, and an auxiliary valve having an auxiliary inlet in pressure communication with the inlet and an auxiliary outlet in pressure communication with the pressure-motion transducer. The auxiliary valve is configured to establish pressure communication between its inlet and outlet when pressure in the inlet traverses a predetermined threshold.
A fluid control valve is provided, comprising a valve body configured with an inlet port extending into an inlet chamber, and an outlet port extending from an outlet chamber. The inlet and outlet chambers are partitioned by a sealing bridge. A control chamber accommodates a flexible sealing diaphragm deformable between a sealing position in which it sealingly bears over the sealing bridge and seals a fluid flow path extending between the inlet and outlet chambers, and an open position in which fluid flow along the flow path is enabled. An inlet path along the fluid flow path is longer than an outlet path therealong. An inlet radii of the sealing diaphragm is longer than an outlet radii of the sealing diaphragm.
F16K 7/00 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage
F16K 7/12 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm
F16K 31/126 - Operating meansReleasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
A control valve is provided, comprising a valve body having an inlet port extending along an inlet axis, first and second outlet ports extending along outlet axes substantially parallel to a single reference axis and substantially perpendicular to the inlet axis, first and second sealing ports associated, respectively, with the first and second outlet ports and each disposed in a fluid path between the inlet port and its respective outlet port, and first and second sealing members configured for independently and selectively opening and closing the first and second sealing ports, respectively. Each of the sealing ports extends along a sealing axis extending transverse to a plane being parallel to its respective outlet axis and the inlet axis, and forms, between a downstream end thereof and an upstream end of the inlet axis, an obtuse angle greater than 90°.
F16K 31/126 - Operating meansReleasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
8.
AUXILIARY FLOW PREVENTION MECHANISM FOR AN AIR VALVE IN A PIPELINE SYSTEM
Auxiliary flow prevention mechanism for preventing leakage from the outlet of an air valve due to a seal malfunction of a primary stopper disposed in a primary conduit of a piping system. The mechanism includes an auxiliary conduit coupled downstream of the primary conduit. The mechanism further includes an auxiliary stopper housed within the auxiliary conduit. The auxiliary stopper is configured to seal an outlet of the auxiliary conduit when the primary stopper is in a sealing position but fails to prevent fluid outflow from an outlet of the primary conduit, whereby after sufficient fluid fills the air valve, the resultant increased fluid level urges the auxiliary stopper into a sealing position to seal an outlet of the auxiliary conduit, preventing fluid outflow therefrom. A visual indication of the seal malfunction is provided by a valve or pressure sensor that detects the presence of fluid in a downstream conduit section.
Provided is a valve including a housing fitted with a valve coupling port being in flow communication with a gas inlet valve component and an independent gas discharge valve component. The gas inlet valve component includes a normally closed valve inlet port and an outlet barrier configured for spontaneous opening to thereby facilitate only ingress of ambient gas into the housing upon pressure drop at the valve coupling port The gas discharge valve component including a valve discharge port and a displaceable float member to thereby facilitate spontaneous egress of substantially only gas from the housing and remain closed upon presence of liquid within the housing.
A valve comprising a housing (12) fitted with a valve coupling port (20) being in flow communication with a gas inlet valve component (24) and an independent gas discharge valve component (26). The gas inlet valve component (24) comprises a normally closed valve inlet port (38) and an outlet barrier (42) configured for spontaneous opening to thereby facilitate only ingress of ambient gas into the housing upon pressure drop at the valve coupling port (20). The gas discharge valve component (26) comprising a valve discharge port (62) and a displaceable float member (66) to thereby facilitate spontaneous egress of substantially only gas from the housing (12) and remain closed upon presence of liquid within the housing (12).
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