A solenoid valve includes a housing having a valve passage; a spool configured to switch between an open and closed state of the valve passage; a coil part configured to generate magnetic force when electric current flows therethrough; a yoke surrounding the coil part; a fluid passage provided on an outer side of the coil part, through which the working fluid passes; an introduction passage communicating with the fluid passage to guide the working fluid inside the housing to the fluid passage; and a discharge passage communicating with the fluid passage to discharge the working fluid passed through the fluid passage outside the yoke.

A valve device includes: a valve body having assembly holes; solenoid components configured such that a first part is inserted into each assembly hole; and a fixing member fixed to the valve body. An engagement groove is provided in an outer circumferential surface of each solenoid component in a direction intersecting an axial center of the solenoid component. Each engagement groove is provided to a portion of the first part that is located outside the assembly hole when the first part is inserted in the assembly hole. The fixing member includes locking portions. Side walls of each engagement groove are engaged with each locking portion so as to set a position in an axial direction of each solenoid component. Each locking portion is engaged with a groove bottom of each engagement groove so as to set a phase around the axial center of each solenoid component.

Provided is a connection mechanism for connecting a tube through a joint to a housing of a valve. At least one of the housing of the valve and the joint is made of a resin. The housing of the valve includes a connection hole for inserting and connecting the joint, and pin insertion holes which is drilled from an external surface of the housing in a direction orthogonal to an axial direction of the connection hole, and penetrates through the connection hole. An annular groove is formed along a circumferential direction of an outer peripheral surface of the joint. In an insertion state of the joint into the housing, the pin is inserted from the pin insertion holes on the external surface of the housing. The pin passes through the annular groove disposed on the joint and comes into engagement with the joint.

An electromagnetic and pilot-operated proportional valve with a valve slide unit (12) mounted in a valve housing (10) so as to be movable along an axial direction, which unit can be driven by an electromagnetic actuator assembly (16) provided at one axial end for the pilot-operated opening of a useful fluid inlet and/or outlet (24) of the valve housing as a response to energisation of a stationary coil (20) of the actuator assembly and interacts with mechanical force storage means (48, 50), more particularly is held in an unenergised stable axial position in the valve housing by said means, wherein the valve slide unit having a closure section (22) extending radially from one body section (30) of the valve slide unit (12) for sealing interaction with the useful fluid inlet or outlet (24) formed on a circumferential inner wall of the housing (10) interacts axially at one end, by means of the preferably cylindrical and/or coaxially extending body section (22), with a stationary guide section (40) of the valve housing to form an axial sliding bearing (62) and, at the other end, is mounted with radial play (56), wherein preferably ring-shaped sealing means (32) seal a circumferential section of the body section with radial play to the circumferential inner wall of the valve housing.

An electromagnetic valve has: a coil; a casing encircling the coil and having a cylinder portion and nail portions; a movable core moving axially in the wound coil; a fixed core set at an opening end of the casing; a valve body fixed to the opening end of the casing together with the fixed core by bending inwards the nail portions; and a spool valve body moving axially in the valve body. The nail portion is provided with a wide width portion at a root side, a narrow width portion at a top side and a stepped portion between the wide width portion and the narrow width portion. The stepped portion is positioned at a substantially same position as an outer edge of one end portion of the valve body, or positioned at a cylinder portion side with respect to the one end portion outer edge of the valve body.

A control valve assembly includes a body having a first mud flow passage defining a mud flow inlet and one or more second mud flow passage portions. A magnetic plunger is slidingly mounted within the body. The magnetic plunger includes one or more third mud flow passage portions each including an inlet section and an outlet section configured to selectively align with the one or more second mud flow passage portions. A solenoid is mounted at the body. The solenoid is selectively activated to shift the magnetic plunger between a first position wherein the third mud flow passage portion is misaligned with the one or more second mudflow passage portions and a second position wherein the third mud flow passage portion aligns with the one or more second mud flow passage portions allowing a pulse of mud to flow through the mud flow passage.

The present disclosure provides an oil control valve with an end oil supply and an assembling method for the same, the oil control valve includes: a valve body, provided with an oil inlet at one axial end thereof; a compression spring located in the valve body and being in a compressed state; and a filter for filtering hydraulic oil flowing from the oil inlet into the valve body, wherein the filter comprises an annular body portion and a strainer fixedly disposed on the annular body portion; the filter is located in the valve body, the compression spring is located on a side of the filter far away from the oil inlet and stands against an end surface of the annular body portion; an inner circumferential surface of the valve body is provided with a clamping slot; and the filter further comprises a bump, the bump protrudes from an outer circumferential surface of the annular body portion and outwardly extends into the clamping slot along a radial direction. Technical solution of the present disclosure simplifies structure of an oil control valve, thus assembling process is simplified, assembling time is shortened, and cost is reduced.

A low-volume non-rising stem gate valve comprising a hollow stem, planetary roller screw and anti-rotation rods. The anti-rotation rods isolate the torque force and maintain the alignment of the planetary roller screw with the stem and the screw shaft, thus reducing the amount of material necessary to support ordinary operational forces.

A solenoid (54) for a solenoid-actuated valve (30) includes a sintered powder metal one-piece core (64) of at least one soft magnetic material and at least one non-magnetic material integrally connected together and a movable armature (88) disposed in the core (64) and having a tapered tip to achieve a required force vs position and current characteristics.

A flow rate control valve has a waterproof function of a driving motor. The flow rate control valve is for transferring a fluid pumped by a water supply pump to a nozzle unit and a nozzle cleaning unit for cleaning the nozzle unit. The flow rate control valve includes al least one housing in which the fluid pumped by the water supply pump is accommodated, and at least one driving motor configured to change a communication area of each of the at least one housing, the nozzle unit, and the nozzle cleaning unit by rotation. At least one sealing adapter is formed between the at least one housing and the at least one driving motor so as to prevent the fluid from flowing into the at least one driving motor.