Abstract: A gas pressure regulator is disclosed that includes a reciprocating piston that engages and disengages from a seat to open the higher pressure and lower pressure sides of the regulator to one another. The regulator includes an elastomer seal between the seat and the piston that has an ignition rating sufficient to avoid combustion in the presence of oxygen at pressure differentials that are a factor of between 5 and 10 between the higher pressure and lower pressure sides of the regulator.

Abstract: The present invention provides a gas shutoff device that prevents tampering procurement of gas or tamper due to stealing of the gas shutoff device.

Abstract: A high temperature warning system for a vehicle steer axle an air pressure supply, a normally-closed valve in fluid communication with pressure supply, a heat sensitive control capable of opening the normally-closed valve upon a predetermined temperature, the heat sensitive control mounted adjacent to the wheel end assembly in a heat exchange relationship therewith, and a warning system connected to the air pressure supply for actuation upon opening of the normally-closed valve.

Abstract: A vacuum pressure regulator system is provided for use in association with a vacuum system in which a vacuum is employed for healthcare purposes, for assisting in monitoring and regulating the vacuum pressure, and having a manual pressure control valve to adjust the treatment vacuum pressure supplied to the patient, a vacuum pressure sensor to sense the treatment vacuum pressure for the patient in the system, and producing a treatment vacuum pressure signal, a sampling circuit which intermittently samples the pressure signal generated by the pressure sensor and generate sampling signals, an electrically powered pressure display circuit, and digital pressure display, for receiving the sampling signals and providing a visible display, and a non-mains power supply.

Abstract: A first pressure sensor that detects pressure in a narrow pressure range with a high accuracy is provided in a fuel tank, and a second pressure sensor that detects pressure in a wide pressure range with a low accuracy with respect to the first pressure sensor is provided in vapor piping between the fuel tank and a tank blocking valve. Until internal pressure of the fuel tank becomes a second predetermined pressure, meter indication is performed on a display on the basis of a second tank internal pressure P2 calculated by the second pressure sensor and an atmospheric pressure sensor, and when internal pressure of the fuel tank becomes less than the second predetermined pressure, the meter indication is performed on the display on the basis of a first tank internal pressure P1 obtained by the first pressure sensor until internal pressure of the fuel tank becomes a fifth predetermined pressure.

Abstract: A leak detector for an insulated duct carrying pressurized hot air comprises a cover secured over a circumferential cut in the insulation of the duct, or over a joint connecting duct sections, thereby creating a reservoir of hot air which has leaked from the duct or joint, a manifold block defining a conduit therein in communication with the hot air reservoir and a cap for securing heat sensitive wires to manifold at the end of the conduit such that the hot air from the hot air reservoir impinges directly on the heat sensitive wires. The leak detector includes flow control mechanisms in the body of the manifold block, to prevent false alarms arising from nominal leakage resulting from ordinary operation of the duct system.

Abstract: The present disclosure is directed to a method and system for detecting activation of a pressure relief device connected to a storage tank containing a pressurized gas. The method includes calculating a pressure relief device release rate based on a set of inputs, wherein the set of inputs includes at least one of a storage tank volume, a pressure relief set point, an orifice size of the pressure relief device, a gas density, and a reseat point for the pressure relief device. The method further includes monitoring the pressure within the storage tank and calculating a differential pressure reading over time, comparing the differential pressure reading over time to the pressure relief device release rate, and detecting a pressure relief device activation based on the comparison result.

Abstract: A gas cylinder is provided with a pressure regulator including a valve body including an upper first chamber, intermediate second and third chambers, a lower channel threadedly secured to and communicating with a container body, a passageway having one end communicating with the container body, a lower through hole communicating with the intermediate third chamber and the channel, and an internally threaded top neck; a high-pressure safety valve; a low-pressure safety valve; a coupler on the valve body; a moveable member on a bottom of the intermediate third chamber; a spring biased hollow member in the intermediate second chamber and having a bottom engaged the moveable member; an externally threaded stem in the upper first chamber and complimentarily disposed on the hollow member; a hollow cap threadedly secured to the stem and the neck respectively; and a knob mounted on the stem.

Abstract: The invention relates to a device for controlling the flow and/or pressure of a pressurized gas, and specifically to a tap for a pressurized-gas cylinder. The tap includes a body having a gas inlet, a gas outlet, and a passage connecting the inlet to the outlet. The tap also includes a valve for closing the passage, as well as a pressure indicator downstream from the closing valve. The pressure indicator is translatably operated and includes just two stable positions, i.e. one that corresponds to the presence of pressure, and the other to the absence of pressure.

Abstract: The present invention relates to a hydraulic attachment comprising a hydraulic circuit, the attachment being a construction or demolition tool, in particular a hydraulic breaker, demolition shears, scrap shears, a pulveriser, a gripper, a crusher bucket or a compactor, which can be mechanically connected to a support device and hydraulically connected to the hydraulic system of the support device. In order to enable the hydraulic circuit to be opened quickly and safely within an attachment and, in particular, to make it possible to display the presence of a particular pressure level within a hydraulic attachment and to determine whether a dangerous residual pressure is present in the system, a hydraulic attachment is proposed that has a residual pressure display (40) which is connected to the hydraulic circuit of the attachment in a detachable or non-detachable manner.

Abstract: A system and method for controlling a liquid management system. The system and method include a primary fill pump and a secondary fill pump, a primary drain pump and a secondary drain pump. The system and method also include a level sensor for monitoring a liquid level in a reservoir. A controller is programmed to monitor the liquid level in the reservoir such that the controller will operate the primary fill pump and the primary drain pump to control the liquid level in the reservoir in a predetermined manner. The controller is further programmed to operate the secondary fill pump and the secondary drain pump to control the liquid level in the predetermined manner in the event of a failure of the primary fill pump or the primary drain pump.

Abstract: A valve for pressurized fluid comprising a body (1) accommodating a fluid circuit (2) having an upstream end (3) designed to be placed in communication with a reserve of pressurized fluid and a downstream end (4) designed to be placed in communication with a using device, the circuit (2) comprising an isolation valve element (5) in order to selectively close off the circuit (2), the valve element (5) being controlled by a lever (8) mounted so as to pivot on the body (1) between a rest position in which the isolation valve element (5) is held in a position of closing the circuit (2) and an active position in which the lever (8) moves the isolation valve element (5) into a position of opening the circuit (2).

Abstract: A control valve for hydraulic fluid is provided. The control valve includes a valve housing and a valve body slidably supported within the valve housing. The valve body has a hollow center defining a passage. The control valve includes a solenoid assembly having a solenoid housing, a coil, and an armature movable in an axial direction. The armature is in contact with an axial end of the valve body. The armature has a bore in fluid connection with the passage of the valve body. The solenoid housing includes a second passage in fluid connection with the bore. A diaphragm seals the second passage. A pressure sensor assembly is located adjacent to the diaphragm that detects a deflection of the diaphragm due to a pressure of the hydraulic fluid in the second passage.

Abstract: A recirculation system for a crude oil cargo tank barge having at least one tank includes a pump in fluid communication with at least one tank and recirculation piping in fluid communication with the pump and at least one tank. The pump pumps fluid from at least one tank to the recirculation piping. The recirculation piping then returns the pumped fluid to at least one tank.

Abstract: A flow control assembly for a fire sprinkler system includes a valve housing having an inlet opening and an outlet opening. The valve housing defines a fluid flow path that extends between the inlet opening and the outlet opening. A flow control valve is disposed within the fluid flow path. A swing check valve is disposed within the fluid flow path of the valve housing downstream from the flow control valve. The swing check valve includes a clapper that is connected to an actuator arm. An electrical switch is disposed outside of the valve housing. A mechanical linkage includes a first end that extends through the valve housing and engages with the actuator arm. The mechanical linkage also includes a second end that is coupled to the electrical switch. The first end translates with said actuator arm.

Abstract: A contaminated solvent recycling system is disclosed and claimed. The system comprises a distillation vessel having an upper distillation zone and a separate, lower, waste collection zone. A heater heats contaminated solvent feed within the distillation zone to distill off the solvent. By separating the distillation zone from the waste collection zone, the distillation zone can process consecutive batches of contaminated solvent feed. The waste collection zone can accommodate waste accumulating from the distillation process for extended periods of time between waste removal operations.

Abstract: A double-walled above-ground storage tank includes a primary tank and a secondary tank, and an interstitial space; an containment chamber formed by a primary chamber wall and a secondary chamber wall, forming a chamber interstitial space therebetween, and an exterior door assembly; and at least one pipe and valve assembly wherein the pipe originates in the tank interior volume and the valve is disposed within the chamber.

Abstract: The invention relates to a drainage circuit (4) for a flow of a liquid (5), the circuit being fitted with a monitoring appliance (13) for monitoring an excess flow rate of the liquid (5). The monitoring appliance (13) comprises a monitoring duct (14) interposed between an upstream duct (7) for collecting the liquid (5) and a downstream duct (9) for discharging the liquid (5). The monitoring duct (14) has retaining means (15) for retaining part of the liquid (5) inside a chamber (16) arranged to receive a spillway (22) of the captured liquid (19) in a reserve (20) fitted with indicator means (23) with a visual scale for providing warning information relating to the quantity of liquid (24) contained in the reserve (20).

Abstract: A vacuum pressure regulator system for use in association with a vacuum system in which a vacuum is employed for healthcare purposes, for assisting in monitoring and regulating the vacuum pressure, and having a manual pressure control valve to adjust the treatment vacuum pressure supplied to the patient, a vacuum pressure sensor to sense the treatment vacuum pressure for the patient in the system, and producing a treatment vacuum pressure signal, a sampling circuit which intermittently samples the pressure signal generated by the pressure sensor and generate sampling signals, an electrically powered pressure display circuit, and digital pressure display, for receiving the sampling signals and providing a visible display, and, a non-mains power supply.

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) and a pipe stub (10), disposed at an angle to the flow channel (3). A throttle unit (6) is arranged in the flow channel (3) and comprises a throttle element (8) that can be actuated through the pipe stub (10). The flow adjustment valve also comprises two measuring points (14, 15) for detecting the pressure in the flow channel (3) at both sides of a throttle arrangement, each of which measuring points being connected to a pressure measuring connection (17) via a pressure measuring channel (26, 27). The aim of the invention is to improve the design options for a flow adjustment valve of the aforementioned type. For this purpose, at least one pressure measuring channel (26) is guided through the pipe stub (10).

Abstract: A system and method for detecting leaks in pressurized or vacuum pipes is disclosed. A pipe clamp comprises a housing that surrounds a pipe fitting. A containment chamber within the pipe clamp prevents leaked gas from escaping into the environment. The pipe clamp is installed in series with an exhaust line to remove the leaked gas from the containment chamber. A sensor may be configured and disposed to detect a change in pressure in the containment chamber to indicate the occurrence of a leak.

Abstract: An apparatus and method for filling a CO2 system that provides carbonation and delivery of beverages to a user is provided together with a control valve for performing this method. The steps include: attaching a hose and pumping liquid carbon dioxide through an inlet fitting housed in a control valve assembly; causing the translation of a valve stem to isolate a gas port and a tank and a user port and directing the liquid carbon dioxide to a liquid port and a tank; and stopping the pumping of the liquid carbon dioxide upon reaching a pre-determined pressure and removing the hose allowing the translation of the valve stem to close the valve assembly from the atmosphere and allowing the liquid to boil to a gas to provide delivery and carbonation to the beverage.

Abstract: Example pressure regulators with filter condition detectors are described herein. In one example described here, a regulator includes a body having an inlet and an outlet and a flow control member interposed between the inlet and the outlet to regulate a fluid pressure at the outlet. The example regulator also includes a filter disposed between the inlet and the flow control member and a detector having a first measurement point upstream from the filter and a second measurement point downstream from the filter and upstream from the flow control member.

Abstract: Methods for detecting valve leakage and apparatus for the same are provided. In one embodiment, a method for detecting a valve leakage includes flowing a gas through a diverter valve, determining a pressure in a gas source provided to the diverter valve, comparing the determined pressure value with an expected pressure value, and generating a signal in response to the comparison.

Abstract: A valve apparatus includes substantially co-aligned first and second valve seats and substantially co-aligned first and second valve members. The first valve member is moveable relative to the first valve seat between at least an open position in which the first valve member is spaced from the first valve seat and a closed position in which the first valve member is seated against the first valve seat. The second valve member is moveable relative to the second valve seat between at least an open position in which the second valve member is spaced from the second valve seat and a closed position in which the second valve member is seated against the second valve seat. An armature is operable for moving the first and second valve members, in response to a magnetic field generated by a coil.

Abstract: The present invention relates to a connecting device for connecting an external function device to an arrangement and for cutting off flow paths by accommodating a clamping device, wherein a pressure-measuring unit and/or a length-measuring unit is adjusted for detecting a clamping force and/or a distance such that it is possible to monitor the status of the clamping device.

Abstract: Systems and method for shutting down a turbine, with the system including a housing defining first and second flowpaths therein, and an inlet coupled to the housing and fluidly coupled to a source of a fluid and to the first and second flowpaths. The system also includes a first outlet coupled to the housing and selectively coupled to the first and second flowpaths, and a second outlet coupled to the housing and selectively coupled to the first and second flowpaths. The system further includes first, second, and third control valves received in the housing and intersecting the first and second flowpaths. The first, second, and third control valves are each movable between a tripped position and an untripped position, such that if two out of three are in the tripped position, fluid is blocked from the first outlet and is directed to the second outlet.

Abstract: A solenoid control apparatus includes a resin housing having a solenoid mounting portion, a connector portion, and a circuit board mounting portion in which a circuit board is mounted. Terminals extending from the solenoid mounting portion and the connector portion are soldered to the electrical circuit on the circuit board. The circuit board has a reduced-rigidity portion in its area corresponding to a portion of the resin housing through which the connector portion is connected to the solenoid mounting portion. The reduced-rigidity portion is formed by reducing the amount of material forming the circuit board per unit area, and is more easily deformable than the remaining portion of the circuit board. When the connector portion is thermally deformed, the circuit board is also easily deformable about the reduced-rigidity portion. This reduces stress on the soldered portions.

Abstract: Embodiments of a method of operating a safety valve and a safety valve system are provided. The valve system includes a valve, an actuator, a mechanical override, and an indicator. The actuator includes a fail-safe mechanism and the indicator is configured to indicate whether the fail-safe mechanism is operable during use of at least one of the actuator and the mechanical override. In one embodiment, a method of operating the safety valve includes actuating the valve into an open position and sending a signal to indicate that the fail-safe mechanism is operable to move the valve to the closed position, while the valve is in the open position.

Abstract: A oil and gas compression system is generally presented. The compression system includes a driver, a driver starter, and an input expansion unit. The expansion unit may include a plurality of inputs configured to receive feedback from the compression system, a processor configured to receive the plurality of inputs and send an output signal to the driver starter to start or stop the driver, and an indication panel configured to indicate the presence of an input condition. The input expansion unit may be configured to store a history of received input conditions and display the history on the indication panel upon request.

Abstract: The present invention discloses a pressure control valve comprising: a cylindrical valve body which has a bottom wall and a side wall, wherein the bottom wall is provided thereon with an air inlet communicating with a device whose pressure to be limited, the side wall is provided with at least one guiding pin, and the cylindrical valve body has air outlets communicating with an exhausting system; a valve core, which is provided within the cylindrical valve body and in air-tight cooperation with the air inlet; a traveling guiding bar, having a lower end connected to the valve core; a covering fitted rotatably or up-and-down movably over the cylindrical valve body, for driving the traveling guiding bar to rotate or move up-and-down; a spiral guiding member, which is fitted up-and-down movably over the traveling guiding bar and is provided on its outer surface with spiral grooves into which the at least one guiding pin can be inserted; a pressure spring, having one end pressed against the valve core and the othe

Abstract: The invention relates to a control device for an extracting unit in the face of a mine, for actuating the hydraulic actuator in the sense of drawing, stepping, setting, and having a plurality of main valves for connecting the actuator of the extracting unit to a main pressure line and a main return line, and a similar plurality of pilot valves, each associated with a main valve for adjusting same and connected to the main pressure line via a pilot pressure line common to all pilot valves and connected to the main return line via a return line common to the main valves and the pilot valves. The pilot pressure line can be shut off and the return line can be blocked off from the main return line and connected to a measuring device for measuring escaping hydraulic fluid.

Abstract: A device that can be attached to the outlet of a gas cylinder, which can monitor the amount of gas in the cylinder.

Abstract: The present invention comprises a method and apparatus for controlling gas flow via a gas shut-off valve assembly. In at least one embodiment, the assembly is configured to drive its shut-off valve from an open position to a closed position, in response to detecting a valve closure condition. The assembly in one or more embodiments operates as an intelligent node in an AMR network, and it interprets a received closure command as a closure condition. Additionally, or alternatively, the assembly detects abnormal operating conditions as the closure condition. Advantageously, the assembly performs initial closure verification, based on detecting movement of the valve into the closed position, and performs subsequent closure verification, based on monitoring downstream gas pressure. In the same or other embodiments, the assembly provides enhanced stand-alone reliability and safety by incorporating one or more valve clearing/cleaning routines into its operations.

Abstract: The present invention consists of a valve assembly, designed to manage compressed gasses. It comprises a solid valve body, to which internal and external components attach to work as a unit solving the problem of performing a series of different functions simultaneously. Some of these functions are: To allow and stop the flow of compressed gasses, display the fill pressure of a cylinder, display the outgoing fill pressure, regulate the outgoing flow of compressed gasses, and depressurize the fill line. Any given embodiment of this valve may present all this functions, some of these functions, or any combination thereof.

Abstract: Various embodiments of methods, apparatus and systems that diagnose and/or detect faults of an electro-hydraulic control system for a transmission are presented. Some embodiments, adjust a main line pressure of the electro-hydraulic control system and detect faults based upon changes in a pressure switch resulting from such adjustments of the main line pressure. The pressure switch may be incorporated into a control main valve or a clutch trim valve of the electro-hydraulic control system.

Abstract: An apparatus for indicating a leak in a beverage dispensing system and sealing a leak in a beverage dispensing system includes a deactivating means including a channel, a sealing ball, a sealing element and a reset means. The sealing ball and sealing element are located within the channel. When a leak is present, the sealing ball is moved from its resting position. Once the leak reaches a predetermined level, the sealing ball is pressed against the sealing element by the force of the gas in the chamber. This seals the chamber and prevents further gas flow through the system.

Abstract: A selectively operable vacuum source designed to reduce leakage is disclosed. In one example, the vacuum source is at least partially within an engine air intake system. The approach may reduce a number of sensors required to diagnose whether or not leaks are present within the vacuum source.

Abstract: A gas flow warning alarm device to produce an alarm indication when the gas flow rate in a pressurized gas system violates at least one predetermined limit. The alarm device includes a gas flow sensing and error signaling subassembly to generate an error signal upon sensing a violative gas flow rate, and an indicator subassembly activatable by an error signal to produce an alarm indication. The gas flow warning alarm device responds both to the depletion of a pressurized gas reservoir and to blockages and disconnections in a gas line downstream of a regulator. A method for detecting gas flow malfunctions in a pressurized gas system. A reservoir changing device to open a filled reserve reservoir of gas to a pressurized gas system upon receiving an alarm indication that pressure in a primary gas reservoir has fallen below a predetermined limit.

Abstract: A valve includes a valve stem assembly including at least one wall and at least one passage at least partially defined within the valve stem assembly. The at least one passage defines a first opening. At least one portion of the at least one wall defines an erosion site that is configured to undergo contact with solid particles such that a second opening of the passage is defined. The valve also includes at least one sensing device coupled in flow communication with the at least one passage through the first opening. The at least one sensing device is configured to transmit a signal representative of an increased fluid flow through the at least one passage.

Abstract: A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. A supply passage can be in communication between the control chamber and a tank and can include a check valve. A relief valve can be disposed between the check valve and the control chamber. A pilot pump and another relief valve may be disposed upstream of the check valve. The relief valve downstream of the check valve can have a higher pressure limit than the downstream one. A pressure sensor may be disposed between the check valve and the control chamber and used to warn the operator of a high pressure in the control chamber.

Abstract: A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. The valve arrangement may include a sleeve against which the dynamic seal is slidably engaged. The valve element may include a check stem. A pressure compensating system may be in communication with bores formed in with the valve element. A pressure system to monitor dynamic seal wear may be in communication with the control chamber of the valve arrangement.

Abstract: A single-use, single-patient, or patient-specific tubing set (300) is disclosed. The tubing set (300) includes at least one check valve (304), along with a use indicator (320). This use indicator (320) provides a visual indication when the tubing set (300) has been used for an injection. In this regard, a piston (340) moves from one position to another when exposed to a certain fluid pressure.

Abstract: A mixing valve assembly including a valve cartridge is supported by a valve body housing within a shower wall. The valve cartridge includes a temperature sensor in thermal communication with water provided to an outlet port of the valve body. A temperature display is configured to provide a visual indication of water temperature detected by the temperature sensor.

Abstract: A valve apparatus includes substantially co-aligned first and second valve seats and substantially co-aligned first and second valve members. The first valve member is moveable relative to the first valve seat between at least an open position in which the first valve member is spaced from the first valve seat and a closed position in which the first valve member is seated against the first valve seat. The second valve member is moveable relative to the second valve seat between at least an open position in which the second valve member is spaced from the second valve seat and a closed position in which the second valve member is seated against the second valve seat. An armature is operable for moving the first and second valve members, in response to a magnetic field generated by a coil.

Abstract: A fluid flow detection device includes a housing of non-magnetic metal, a flow passage through the housing and a valve seat in the flow passage. A magnetic valve element emits a magnetic field. The valve element is movable relative to the valve seat between a closed position blocking fluid flow through the flow passage and an open position allowing fluid flow through the flow passage. The magnetic valve element is biased toward the closed position. A magnetic field enhancer is movable with the magnetic valve element for enhancing the magnetic field. A magnetic field sensor on the housing is operable to signal a change in position of the valve element as it moves between its open and closed positions.

Abstract: A pressure sensor having a structure in which compressible fluid is prevented from stagnating in the vicinity of a pressure-receiving surface of the pressure sensor in the interior of a pressure introducing portion is provided. In a pressure sensor including a sensor body arranged in a pressure introduction flow channel branched in a T-shape upward from a primary fluid flow channel in which fluid to be subjected to pressure measurement flows, the pressure introduction flow channel includes an inclined surface extending in a direction to increase an opening area on the side of an inlet port of the fluid on a wall surface on the downstream side in terms of the direction of flow of the fluid.

Abstract: A dual gas source changeover valve comprises a valve body having a first inlet port, a second inlet port and an outlet port which are all in fluid communication with each other, a spool having a structure relative to an axial passage of the cavity of the valve body and which is slidably disposed therein, a first transition cavity formed by the cavity of the valve body and the spool between the first inlet port and the outlet port, a second transition cavity disposed opposite to the first transition cavity and formed between the second inlet port and the outlet port. By introducing delivered gas to the first transition cavity or the second transition cavity through connection channels, the present invention selectively connects or disconnects the first inlet port, the first transition cavity and the outlet port or the second inlet port, the second transition cavity and the outlet port.

Abstract: A time remaining display assembly for indicating the time remaining in a pressurized gas tank, adapted to be connected to a regulator having a flow rate adjuster for selecting one of a plurality of flow rate settings comprising an assembly coupled to the flow rate adjuster, the assembly having one or more time scales imprinted thereon, each time scale corresponding to one of the flow rate settings, each time scale indicating the time remaining in the tank as a function of gas pressure in the tank.

Abstract: A gas meter device is provided which is configured in a manner that even if a user takes an unauthorized action such as the removal of a gas meter device in order to use gas without authorization, since the generation of a particular flow-rate change profile different from a normal flow-rate change profile of a gas appliance is detected, the sign of the tamper of the gas can be detected, whereby the tamper of the gas can be prevented. The gas meter device includes an appliance determining unit 6 for determining a gas appliance being used and a tamper determining unit 7 which determines that the gas is used without authorization in the case where the particular flow-rate change profile different from an appliance determining value registered in a registration storage unit 5 is generated.