Provided is a regulator unit that when a pressure is set with respect to a workpiece having a certain weight, can be used for raising/lowering, suspension, or the like of a workpiece having a weight exceeding the weight with the set pressure maintained. The regulator unit is disposed between a drive cylinder and a fluid pressure source and includes a regulator body and a pressure control mechanism connected to the regulator body. The pressure control mechanism includes a cylindrical housing, an end surface cover, and an operation handle fixed to an end of a screw rod protruding from the end surface cover. The end surface cover is fixed to a resin ring fitted to an end of the cylindrical housing and is slidingly rotatable with respect to the end surface of the cylindrical housing integrally with the resin ring in accordance with the amount of turn of the operation handle.

A sprinkler assembly including a pressure regulator and a flow stop element combined in a single assembly. In one embodiment, the sprinkler includes a sprinkler body in fluid communication with a water supply to provide water to the sprinkler, a riser movably mounted in the sprinkler body and in fluid communication with the sprinkler body such that the riser rises up and out of the sprinkler body when water is provided to the sprinkler, a nozzle assembly mounted on a top end of the riser and in fluid communication with the riser; and a regulation element mounted in the riser and in contact with a portion of the nozzle assembly. The nozzle assembly holds the regulation member in an open position to allow flow of water to the nozzle assembly and to maintain a substantially constant water pressure in the nozzle assembly.

A pressure reducing valve has a seal member, which is mounted on a side wall of a piston. The seal member is arranged between a first ring and a second ring. Consequently, depending on the direction of displacement of the piston, the first ring or the second ring is positioned on one of a displacement direction upstream side or a displacement direction downstream side of the seal member. The first ring and the second ring are made of a resin material, for example a polytetrafluoroethylene resin or a polyetheretherketone resin, having lower coefficient of friction compared with that of the seal member.

Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and/or by a mechanism driven by fluid flow, optionally without using electrical power.

A tray is provided between a supply air port member and an exhaust port member. A peripheral edge portion of an opening portion of an exhaust port of the exhaust port member that faces an output chamber side is a conical guiding portion. A spherical body is disposed between the guiding portion and an inner bottom face of a tray. The inner peripheral wall of the tray fits slidably into the outer peripheral surface of the end portion of the exhaust port member positioned within the output chamber. The other end of the poppet valve is caused to contact the outer bottom face of the tray. Thus, the exhaust port and the spherical body are centered automatically at the position of the center of the exhaust port, regardless of the position of the shaft axis of the poppet valve, so that there will be essentially no sliding friction.

Fluid regulators are described. An example fluid regulator described herein includes a regulator body defining a sensing chamber between an inlet and an outlet, a bonnet coupled to the regulator body, the bonnet defining a loading chamber, the loading chamber being fluidly isolated from the sensing chamber and an environment surrounding the fluid regulator, a guide disposed between the sensing chamber and the loading chamber, the guide defining a vent flow path, the vent flow path to enable the sensing chamber to vent to the environment during a failure condition of the fluid regulator, a transverse bore defined between an interior surface of the regulator body and an exterior surface of the regulator body, the transverse bore being aligned with the vent flow path to enable fluid communication between the transverse bore, the vent flow path, and the environment surrounding the fluid regulator, the exterior surface of the regulator body defining a groove that is partially defined by the transverse bore, and a filter to be disposed in the groove to cover an outlet of the transverse bore.

A pressure regulator for a hydrogen storage system, wherein the pressure regulator is adapted to operate at temperatures below −50° C., while minimizing the need for separate sealing elements and O-rings. The pressure regulator includes a main body including an inner cavity bounded by an interior wall, a piston disposed in the inner cavity, the piston including a first channel disposed adjacent a first portion, wherein the first portion is adapted to cooperate with the interior wall to form a seal between the piston and the interior wall, a first biasing device disposed in the first channel, wherein the first biasing device is adapted to exert a force on the first portion of the piston to form a seal between the first portion and the interior wall, and an end cap coupled to the main body thereby enclosing the piston to form an outlet pressure chamber.

Provided is a regulator unit that when a pressure is set with respect to a workpiece having a certain weight, can be used for raising/lowering, suspension, or the like of a workpiece having a weight exceeding the weight with the set pressure maintained. The regulator unit is disposed between a drive cylinder and a fluid pressure source and includes a regulator body and a pressure control mechanism connected to the regulator body. The pressure control mechanism includes a cylindrical housing, an end surface cover, and an operation handle fixed to an end of a screw rod protruding from the end surface cover. The end surface cover is fixed to a resin ring fitted to an end of the cylindrical housing and is slidingly rotatable with respect to the end surface of the cylindrical housing integrally with the resin ring in accordance with the amount of turn of the operation handle.

A method of collecting data in a field device includes receiving indications of variables for which data is collected, receiving indications of trigger events to trigger collection of data, receiving threshold values associated with each of the trigger events, monitoring the trigger events, and initiating data collection when at least one of the trigger events crosses one the threshold values associated with the corresponding trigger event. A method of tuning a PID controller in a field device includes setting a limited range for selecting a value for a control parameter of the PID controller, selecting the value of the control parameter, wherein the selected value is constrained to be within the limited range, transmitting the selected value to the field device, obtaining, from the field device, a measurement of a response of the field device to a setpoint change, and displaying the obtained response measurements to a user.

A liquid leak detection and prevention device comprised of a leak detection apparatus positioned near a water-dependent appliance to monitor for moisture due to a leak, and a leak prevention system connected to the leak detection apparatus in fluid communication with a water pipe attached to the water-dependent appliance and positioned in-line with the water pipe is disclosed.