A valve assembly including a valve housing and a handle that is movable about an actuation axis to actuate a valve actuator within the valve housing between an open position and a closed position. The handle has a first opening and the valve housing has a second opening. When the valve actuator is in the closed position the first opening aligns with the second opening to enable receipt of a lockout member that prevents movement of the valve actuator from the closed position to the open position.

The invention relates to an electric field device (10) with an ignition protection-type pressure-tight encapsulation for use in explosion-prone regions for controlling and/or regulating a valve unit of a process system, comprising a housing (12), in which a control unit (48) that comprises electronic components and is used as a monitoring, control, and/or regulating unit is arranged, said control unit (48) having a releasable communication connection to an operating unit (62). The housing (12) can be connected to a drive housing of the valve unit via a mechanical interface (42), and the housing has at least one connection feedthrough (44), via which at least one line can be connected that is connected to the control unit (48) via a connection interface (46). The invention is characterized in that the housing (12) is designed as a housing assembly with a modular structure, having a first module (16) which is formed together with the mechanical interface (42) to the drive housing and the connection feedthrough (44). The control unit (48) is secured in the first module (16) and has an interface to a control center, wherein the first module (16) can be mechanically connected to a cover element (20) selectively either directly or indirectly in a releasable manner, and the indirect connection of the first module (16) to the cover element (20) is produced with the interposition of a second module (18). The operating unit (62) is arranged in a stationary manner in the second module (16), and the second module (18) can be fixed in different angular orientations about a longitudinal axis of the electric field device relative to the first module (16).

According to embodiments of the present invention, an apparatus is provided. The apparatus includes a relief valve having an inlet pathway arranged to receive a medium flowing in the apparatus, and an outlet pathway arranged for the medium from the inlet pathway to flow through at a relief state to relieve pressure in the apparatus, an outlet pressure sensor arranged to determine an outlet pressure associated with the outlet pathway, and a processing circuit configured to determine a status of the relief valve based on the outlet pressure.

A control valve assembly is provided for a fluid treatment system, including a housing having a top portion and a bottom portion secured to the top portion, the housing including an inlet and an outlet. At least two modular chambers are secured in the housing. A first chamber is configured to receive fluid from the inlet and a second chamber is configured to provide fluid to the outlet. A piston is also provided which includes a shaft with a plurality of sealing rings. The piston extends through the housing and through the first chamber and the second chamber. The piston is configured to reciprocate in an axial direction to control the flow of fluid in the control valve assembly.

A valve has flow trim assembly that can be quickly and efficiently removed and repaired or replaced. A body section having a central through bore defines an inlet, an outlet and inner chamber or space. An upstream cap and inlet hub are disposed at the inlet of the body member, while a downstream cap and outlet hub are disposed at the outlet of the body member. An actuator stem extends into the inner chamber, while a gear train can transfer torque force applied to the actuator stem to a rotator. A first (movable) trim member is attached to the rotator and can be selectively rotated relative to a second (fixed) trim member. The first and second trim members cooperate to adjust flow opening through the valve.

A valve has inlet and outlet port members with at least some having integrated sensor ports with sensors pre-provided in fluid tight connection to the sensor ports permitting a more compact construction than prior art systems.

A linear feedback travel assembly includes a first tube end, a second tube end, and a longitudinal axis. A drive rod includes a first end and a second end, and a cam includes a first end, a second end, and a wall defining a bore, a first slot, and a second slot. The cam is movable along, and rotatable about, the longitudinal axis. A first pin is movably disposed in the first slot of the cam and is fixed relative to the first tube end. A second pin is movably disposed in the second slot of the cam and connects the drive rod to the cam. When the cam moves along the longitudinal axis, the first pin moves within the first slot and rotates the cam about the longitudinal axis. The second pin rotates the drive rod as the second pin moves within the second slot of the cam.

Disclosed is an assembly comprising a valve and a connector. The assembly (1) comprising: - a valve (10); - a monitoring circuit (4); - at least one connector (2) intended to be placed upstream or downstream of the valve (10), comprising at least one sensor and a communication circuit for transmitting data, to the monitoring circuit (4), that relates to a measurement carried out by the sensor, the monitoring circuit (4) being designed to transmit said data to a processor outside the assembly and/or to generate operating diagnostic information of the valve on die basis of the transmitted data.

Disclosed are a sensor for measuring seating force of an engine intake and exhaust valve and a measuring method. The sensor comprises a mounting boss, a force bearing element, a piezoelectric element, an annular thin-wall shell and an annular diaphragm with a T-shaped section. Meanwhile, the present disclosure also provides a measuring method by using the sensor. The sensor is simple in mechanism and convenient to use, has certain universality, and can realize the measurement of the impact load of the engine intake and exhaust valve.

A communication system includes a first radio frequency identification (RFID) device coupled to a sensor that monitors a fire condition and a second RFID device. The first RFID device includes at least one first antenna that receives a fire detection signal from the sensor, and a processing circuit that causes the at least one first antenna to transmit a radio frequency (RF) signal corresponding to the fire detection signal through an internal volume of a pipe coupled to a fluid source. The second RFID device includes at least one second antenna that receives the RF signal through the internal volume of the pipe. The second RFID device controls operation of a fluid distribution device responsive to receiving the indication of the fire detection signal.