A flow regulating valve in which a needle valve body is arranged to be moved axially by a motor through a motion conversion mechanism. The motion conversion mechanism has: a guide member having formed therein axially elongated slits with which cam pins fixed to the needle valve body are slidably engaged, the guide member being coupled to the motor; and a cam body having formed spirally shaped cam parts with which the cam pins are engaged such that the cam body is prevented from rotating relative to a valve casing. The valve casing includes inside thereof a deformation-restricting element having a female type of fitting part into the inside of which the forward-direction-side end part of the cam body gets fitted.

The driving mechanism has a tubular housing coupled to a control valve and housing an activating cylinder and an activated cylinder, cooperating with each other and respectively coupled to a rod of a wheel and a sealing device. The driving mechanism presents: an inoperative condition, in which the activated cylinder is maintained in a closing position of the control valve; a first operative condition, obtained by the rotation of the activating cylinder in a first sense and in which the activated cylinder is maintained in a first opening position, until the activating cylinder is rotated in an opposite sense, returning the activated cylinder to its closing position; and a second operative condition, obtained by rotation of the activating cylinder in a second sense and in which the activated cylinder reaches a second opening position, from which it is automatically displaced back to its closing position, in a timed manner.

Position transmitter assemblies for use with actuators are disclosed. A position transmitter assembly for use with an actuator stem of an actuator includes a mounting bracket arranged for attachment to the actuator. The position transmitter assembly includes a position transmitter operatively coupled to the mounting bracket, the position transmitter including a position sensor or a feedback array. The position transmitter assembly includes an arm. The arm includes a first portion and a second portion. The other of the feedback array or the position sensor is mounted to the first portion. The position sensor is responsive to the feedback array to enable the position transmitter to determine a position of the actuator. The position transmitter assembly includes a cam assembly arranged between the actuator stem and the arm. The cam assembly is to cause the arm and the feedback array to linearly move when the actuator stem is rotating.

The present invention relates to the field of non-electric multi-channel valves adapted to provide specific flow patterns to aqueous liquids, vapor or gas, and, more particularly, to non-electric multi-channel valves configured to provide continuous outflow to aqueous liquids, vapor or gas.

A control system for a coolant control valve unit, which includes a cam and a valve that opens and closes a coolant passage in conjunction with rotation of the cam, includes: a motor controlling the rotation of the cam; and a controller configured to correct a target valve opening degree of the valve using a correction value according to a degree of wear of the valve, to determine a target rotational angle of the cam using the target valve opening degree corrected by the correction value, and to control an operation of the motor according to the target rotational angle of the cam.

Position transmitter assemblies for use with actuators are disclosed. A position transmitter assembly for use with an actuator stem of an actuator includes a mounting bracket arranged for attachment to the actuator. The position transmitter assembly includes a position transmitter operatively coupled to the mounting bracket, the position transmitter including a position sensor or a feedback array. The position transmitter assembly includes an arm. The arm includes a first portion and a second portion. The other of the feedback array or the position sensor is mounted to the first portion. The position sensor is responsive to the feedback array to enable the position transmitter to determine a position of the actuator. The position transmitter assembly includes a cam assembly arranged between the actuator stem and the arm. The cam assembly is to cause the arm and the feedback array to linearly move when the actuator stem is rotating.

A control system for a coolant control valve unit, which includes a cam and a valve that opens and closes a coolant passage in conjunction with rotation of the cam, includes: a motor controlling the rotation of the cam; and a controller configured to correct a target valve opening degree of the valve using a correction value according to a degree of wear of the valve, to determine a target rotational angle of the cam using the target valve opening degree corrected by the correction value, and to control an operation of the motor according to the target rotational angle of the cam.

A valve for a water line for preventing or reducing air from being read by a water meter or other device as water. The preferred form of the valve is in line adjustable, i.e., without removing the valve from the water line and/or without shutting-off the flow of water through the water line to vary the force necessary to open the valve to allow a fluid to flow therethrough. Preferably, the valve includes a simple user manipulated tool to vary the force necessary to open the valve from a maximum force to a minimum force without detaching the user manipulated tool from the valve. The force adjusting features disposed in the valve housing are designed to maximize fluid flow through the valve housing while still allowing inline adjustment of the valve. Preferably, the valve includes an anti-tampering member that prevents an unauthorized user from altering the force necessary to open the valve.

A two-part housing interconnects inlet and outlet fittings in fixed relation to form a valve body having an elongate internal chamber. The chamber includes a piston having a seal and cyclically slidable from a closed, flow-restricting position, to an open position. A cam within the chamber engages a follower on the piston outer surface and is driven by an external handle. Certain valve bodies are formed by connecting inlet and outlet fittings. An actuator includes a two-part collapsible cam insertable through the chamber and into a bonnet. Following piston installation, the cam is extended by an external handle to engage a follower on the piston surface. Another actuator includes a body-encircling ring having a cam track on the interior surface. One end of a follower engages the track and another end engages the piston. Rotation of the ring and track drives the piston within the chamber to control liquid flow through the valve.

The driving mechanism has a tubular housing coupled to a control valve and housing an activating cylinder and an activated cylinder, cooperating with each other and respectively coupled to a rod of a wheel and a sealing device. The driving mechanism presents: an inoperative condition, in which the activated cylinder is maintained in a closing position of the control valve; a first operative condition, obtained by the rotation of the activating cylinder in a first sense and in which the activated cylinder is maintained in a first opening position, until the activating cylinder is rotated in an opposite sense, returning the activated cylinder to its closing position; and a second operative condition, obtained by rotation of the activating cylinder in a second sense and in which the activated cylinder reaches a second opening position, from which it is automatically displaced back to its closing position, in a timed manner.