Abstract: A flow rate control valve includes a housing having an accommodation chamber in communication with oil passages, and a spool accommodated in the accommodation chamber movably in a reciprocating manner. The housing includes a bolt for fastening a movable member of a variable valve timing mechanism, and a sleeve inserted in an insertion portion provided in the bolt and having the accommodation chamber. The bolt is provided with a port through which the oil passages communicate with the insertion portion. The sleeve is provided with a through hole penetrating the sleeve. Furthermore, an annular protrusion and a recess are provided as a phase adjustment portion that adjusts a phase of rotation of the sleeve with respect to the bolt to a phase in which the port coincides in position with the through hole and holds the phase of rotation of the sleeve with respect to the bolt equal thereto.

Abstract: A slim profile rotary control valve capable of independently modulating fluids into a single heat exchanger from two different and distinct systems that utilize the same type of heat transfer fluid. The valve is capable of monitoring both the supply and return fluid temperatures as well as the mass flow to enable the valve controller to optimize system's energy efficiency. It eliminates the use of multiple valves currently used in a conventional changeover system.

Abstract: An angle of repose valve for controlling the flow of granules and a method of repairing a leak in an angle of repose valve are disclosed herein. The angle of repose valve has a housing with an interior cavity, an inlet, and an outlet. A gas is used to convey granules through the valve and the housing has a thickness such that the gas can have a pressure of at least 70 psi. A saddle is disposed in the interior cavity of the housing and is coupled to a rotatable shaft that passes through an opening in the housing. A chevron seal is disposed between the shaft and a sealing member. A compression member is threadably engaged with the sealing member and is operable to exert force on the chevron seal to expand the chevron seal against the shaft and/or the housing to prevent and/or repair leaks of gas therethrough.

Abstract: A valve element mechanism for an exhaust gas circulation valve has: a primary eccentricity A causing a center O of a support shaft 4 rotatably provided in a housing 2 to separate from a centerline P of a seal surface 2b of a valve seat 2a with which a valve element 5 opening and closing a fluid passage by being rotated by the support shaft 4 contacts; a secondary eccentricity B causing the center O of the support shaft 4 to separate from a centerline Q of the housing 2, and a tertiary eccentricity C causing an apex G of a cone shape 6 defining a seal surface 5a of the valve element 5 and the seal surface 2b of the valve sheet 2a to position at a side opposite from the support shaft 4 and to tilt against a centerline of the housing 2.

Abstract: A tapered rotary feed valve is manufactured or refurbished for use in feeding materials into a high temperature environment, so as to reduce the time and expense of break-in operation, by shaping the tapered bore of the valve body at ambient temperature to have greater clearance around the rotor in a sector of the valve body that is cooler when the valve is at stable operating temperature. As a result, when the valve first reaches operating temperature after being manufactured or refurbished the rotor and the bore of the valve body nearly fit and can quickly wear in to fit each other closely.

Abstract: The present invention provides a method and apparatus for substantially eliminating destructive transients of pressure or flow rate which can degrade the efficiency and useful lifetime of chromatography columns. The present invention enables a substantially constant flow of mobile phase liquid to be maintained through the chromatography system by eliminating the flow blockage interval associated with the actuation of sample injection valves. The present invention further provides a method to reduce the pressure and flow rate transients associated with pressurization of the sample loop contents when the sample loop is introduced to chromatography system delivery pressure.

Abstract: The present disclosure is directed to the introduction of an additive to a contaminated gas stream.

Abstract: A valve body defines a valve stem opening. A valve stem comprises an enlarged portion greater than the valve stem opening to thereby secure the valve stem within the valve body by limiting radially outward movement of the valve stem with respect to the valve body. A rotary member comprise upper and lower bosses. Upper and lower split trunnions, with split components that can be inserted from opposite sides of the valve body, are used to rotationally support the upper and lower bosses to permit rotation of the rotary member while preventing axial movement of the axial flow path of the valve.

Abstract: A rotary valve comprising a stator with an inner stator face, and a rotor with an inner rotor face arranged in sealing contact with the inner stator face, the rotor is rotatably movable to a plurality of rotor positions about a rotational axis relative to the inner stator face, the stator comprises a plurality of connection ports each being in fluidic contact with a corresponding valve orifice at the inner stator face and the rotor comprises two or more interconnection paths for selective fluidic interconnection of said valve orifices with respect to the rotor position.

Abstract: A valving device includes a body having a bore hole and a slot, the slot providing fluidic communication between the bore hole and an outside of the body. A cylinder is rotationally movably engaged within the bore hole and has an opening providing fluidic communication between an outer radial surface of the cylinder and a cavity therewithin. The valving device is configured to alter a portion of the slot in fluidic communication with the opening.

Abstract: A rotary type channel switching valve for use in a heat pump system is provided. The channel switching valve provides a plurality of channel switching means required when switching connection of a plurality of devices to parallel/series connection, e.g., in a system including the plurality of devices including inlet/outlet ports for a fluid. The channel-switching valve can play a role of a plurality of channel switching means which are required when connecting a plurality of heat exchangers in parallel when a refrigerant is passed in a normal direction, and when connecting a plurality of heat exchangers in series when the refrigerant is passed in a reverse direction, for example, in a heat pump including the plurality of heat exchangers, and thereby, can realize simplification of a configuration of the heat pump, reduction in an occupied space, cost and energy consumption, or the like.

Abstract: A ball valve with a purging mechanism is used in a method that provides a fluid purge of the valve. The fluid purge may be accomplished by introducing fluid into a housing of the valve and allowing the fluid to pass through the valve and out through an outlet port. The fluid purge eliminates any residual matter from a liquid flow line. The fluid used for the purge is typically nitrogen or clean dry air (CDA).

Abstract: An actuator or valve includes an inner member; an outer member around the normally rotatable inner member; the inner member including normally two spaced apart outwardly extending projections abutting with the outer member; the outer member including normally two inwardly extending projections abutting with the inner member, the projections defining a chamber therebetween; and the actuator further including a fluid port in communication with the chamber. The actuator/valve is normally made by straight profile cutting. The compact rotary actuator may be remotely operated.

Abstract: A valve (1) includes a housing (2) which is provided with a valve body (3) which is rotatable around the longitudinal axis of the housing. The housing and valve body are both of a tube-shaped design and provided with openings (9, 14) which can be brought in line with one another by rotation, enabling a flow. The valve body can only be rotated by an operating element (4). This operating element is to be coupled to the housing and the embodiment has been designed in such a manner that the operating element can only be received in the housing when the valve body is in the closed position and that the operating element cannot be removed from the housing during/after rotation of the valve body in the housing. Removal is only possible after the operating element has brought the valve body back to the closed position.

Abstract: Embodiments of an outflow valve are provided for use in conjunction with an actuator. In one embodiment, the outflow valve includes a frame and a first door rotatably coupled to the frame and configured to be moved by the actuator between an open position and a closed position. The first door includes: (i) a main body, (ii) a bellmouth fixedly coupled to the main body, and (iii) a plurality of longitudinally-spaced slots formed through the bellmouth and increasing the flexibility thereof.

Abstract: A header body for use in fluid circulation systems such as a hydronic heating system is provided in which the header body is configured to couple fluid flow to individual fluid circuits of the system. In one embodiment, the header body comprises a suction chamber with a fluid passage through which fluid flows as between one or more header bodies coupled together to form a manifold. A valve is disposed in the suction chamber, wherein in one example the valve comprises a valve body that is supported by portions of the suction chamber on opposite sides of the fluid passage. The valve body is configured with an aperture that is aligned with the fluid passage in a first and second operating state, one of which decouples the fluid circuit from the system.

Abstract: Collets for coupling rotary actuators to valves are disclosed. An example shaft coupling assembly includes an elongated member having a first end and a second end, in which the first end includes a coupling portion having a first opening configured to receive a rectangular shaft. The coupling portion includes at least one flexible member having an arcuate outer surface and a first inner surface adjacent a second inner surface that at least partially define the first opening. At least a portion of the first inner surface is to engage a first side of the rectangular shaft and at least a portion of the second inner surface is to engage a second side of the rectangular shaft. The shaft coupling assembly further includes a sleeve having a second opening to receive the elongated member and a tapered third opening configured to receive the coupling portion.

Abstract: A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a port for receiving a replaceable flow-path insert in a fluid-tight seal. In one embodiment, the plug also includes at least one inset seal for sealing the at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.

Abstract: A butterfly valve comprises: a body including a valve opening; and a flapper rotatably mounted about a rotation axis so as to be movable relative to the valve opening. The flapper is rotatable at least 180° about the rotation axis so that the flapper is movable to at least one fully opened position, at least one fully closed position 90° apart from the fully opened position, and a third position, either fully opened or fully closed, 180° from the other like position. In one embodiment the flapper is rotatable at least 360° about the rotation axis so that the flapper is movable to each of two opened positions 180° apart, and two closed positions 180° apart from each other and 90° and 270° apart from each of the fully opened positions. The valve can be easily calibrated and controlled, and cleaned to extend the useful service life between cleanings.

Abstract: A straight shaft sealing valve assembly includes a valve body, a shaft, a valve element, and a seal element. The valve body has an inner surface that defines a flow channel. The shaft is rotationally mounted on the valve body and extends across the flow channel. The shaft includes a first seal opening and a second seal opening. The first and second seal openings are spaced apart from each other and extend through the shaft. The valve element is coupled to the shaft and is rotatable therewith, and has an outer periphery. The seal element is coupled to the valve element, extends from the outer periphery, and extends through the first and second seal openings.

Abstract: A heat exchanger for a regenerative thermal oxidiser is described. The heat exchanger has a heat exchange bed that is disposed within a housing. The heat exchange bed is disposed parallel to the longest axis of the housing. A cavity is formed at either side of the heat exchange bed. Channels in the heat exchange bed link the two cavities. Because the heat exchange bed is disposed parallel to the longest axis of the housing, the area of the heat exchange bed facing the cavities is maximised, and the length of the channels is minimised, this reduces the pressure required to drive gas through the heat exchanger.

Abstract: A fluid dispensing valve is described which includes a valve housing having a wall which defines an internal cavity, and wherein a passageway is formed through the wall of the valve housing; and a valve control element having a continuous and deformable sidewall is coaxially and rotatably received within the internal cavity of the valve housing, and wherein at least a portion of the sidewall of the valve control element deforms when a vacuum is created in the internal cavity of the valve housing so as facilitate the controllable delivery of a source of fluid into the valve housing.

Abstract: A flow control device for a bar gun manifold. The flow control device includes a sleeve and an actuating member. The sleeve is monolithically formed of an elastomeric material. The sleeve includes a cylindrical outer surface, a through hole oriented transverse to the sleeve axis of rotation, a first raised portion that encircles the sleeve and is shaped to provide a seal between the sleeve and the manifold body, and a first interface shaped to connect the sleeve to the actuating member. The actuating member includes a second interface shaped to interface with the first interface. The first and second interfaces are shaped to transfer rotation of the actuating member about the sleeve axis of rotation to the sleeve to reorient the through hole relative to a fluid passage of the manifold body.

Abstract: A fluid control device including a valve body, a control member, and a one-piece bonnet. The valve body defines a flow path for a fluid. The control member is disposed in the valve body and adapted for displacement between at least a first position and a second position. The one-piece bonnet is coupled to the valve body and defines a protrusion. The protrusion extends at least partially into the flow path and is arranged to direct at least some of the fluid flowing along the flow path when the control member is disposed between the first position and the second position.

Abstract: A gas rotary valve comprises a valve body (1), a valve core (2), a valve cover (3), a actuating shaft (4) and a regulator positioning pin (6). The valve core (2) has a large through hole (22), a first small through hole (23) and a second small through hole (24) which are all disposed on a peripheral surface of said valve core (2). A guide pin (41) radially disposed on the rear end of the actuating shaft (4), a first step (3a;3c), the rear end (61) of the regulator positioning pin (6) and a second step (3b;3d) are disposed in distance in the inner chamber of said valve cover (3), respectively preventing the guide pin (41) from rotating. When the guide pin (41) rotates to the rear end (61) of the regulator positioning pin (6) and is stopped, the first small through hole (23) communicates with the inlet passage (11) of the valve body (1).

Abstract: A rotating valve is provided that includes an inlet region having a plurality of stationary separate inlets for several flows of a fluid and an outlet region having an in particular identical plurality of stationary separate outlets for the flows of the fluid, wherein between the inlet region and the outlet region a switching region having a switching member that can be rotated about an axis is provided, wherein in a first position of the switching member the plurality of inlets are connected to the plurality of outlets in a first association, and wherein in a second position of the switching member the plurality of inlets are connected to the plurality of outlets in a second association, wherein the switching member comprises a plurality of openings through which the fluid flows flow axially in the direction of the rotation axis and which are moved together with the switching member, the openings alternately covering a plurality of stationary, axially directed openings in the course of the rotation of the sw

Abstract: A sanitary rotary valve prevents the accident of touching rotor and casing, and powder contamination by means of supporting rotor at near point of center of rotor, and electrical alarm system that stops the rotation of geared motor automatically if rotor touches casing, and angular bearings to support shaft and screw nut to prevent looseness of bearings, and clearance between side plate and casing can be cleaned up easily by means of easy extracting side plate to outside by hunger and connecting rod, and fixing the position of side plate correctly by set bolts.

Abstract: Embodiments of the invention provide a fill valve for use in a livewell of a boat. The fill valve includes an intake and a valve housing coupled to the intake. The valve housing includes a rounded half-sphere shaped front wall coupled to a substantially flat back wall. The front wall includes one or more inlet openings in fluid communication with the intake. The fill valve also includes a valve switch positioned in the valve housing to switch between a first position allowing fluid communication between the inlet openings and the intake and a second position providing a substantially liquid-tight seal between the inlet openings and the intake.

Abstract: Actuator levers, collets and collet tools for use in process control devices are disclosed. An example apparatus includes an actuator lever, a collet coupled to the actuator lever, and a collet tool. In the example apparatus, the collet tool is removably coupled to at least one of the lever or the collet, and the collet tool applies a force to at least one of the actuator lever, the collet, a valve shaft, or an intervening structure to couple or decouple the collet to or from the lever.

Abstract: The present invention relates to a self actuating rotary dust valve particularly for discharging dust from an engine air cleaner. The rotary dust valve includes a valve body having an inlet port, an outlet port and a rotor chamber interposed therebetween. A rotary dust ejection member is enclosed in the rotor chamber and supported for rotation about a fixed axis. A plurality of fin members are provided angularly spaced about and secured to the hub member. Adjacent pairs of the fin members define at least one dust pocket therebetween to receive dust from the air cleaner to be ejected. The rotor chamber and the fin members are cooperatively shaped and configured to maintain a continuous air lock closure. The dust valve is operable by any of: gravity and vibration to rotate and thereby to discharge the dust buildup through the outlet port or alternately by other drive means.

Abstract: A multi-position rotary shear valve assembly having a substantially metallic or ceramic stator device and a substantially metallic or ceramic rotor device. The stator device defines a substantially planar stator face and at least two or more stator channels in fluid communication with the stator face at corresponding stator ports, while the rotor device includes a substantially planar rotor face defining one or more rotor channels. A tribological coating is disposed atop at least one of the rotor face and the stator face, which enables a substantially fluid-tight, selective relative rotation between the rotor face and the stator face, at a rotor-stator interface, between two or more rotor positions.

Abstract: Provided is a sliding member which includes a plurality of open pores in a sliding surface, which each comprises one or more opening portions having a circularity of 0.24 or more and a circle equivalent diameter of 10 ?m to 150 ?m. A ratio of the number of open pores having the overlapping degree of 10% or more between the opening portions is 3% or less. Another sliding member includes a plurality of open pores in a sliding surface, which each comprises one or more opening portions having a circularity of 0.24 or more and a circle equivalent diameter of not less than 10 ?m nor more than 78 ?m. A coefficient of variation of the opening portions satisfies the following equation: 1.03??V/X?1.51 where ?V is a standard deviation of circle equivalent diameters, and X is an average value of the circle equivalent diameters. A mechanical seal ring, a mechanical seal and a faucet valve each using the sliding member are also provided.

Abstract: The present invention is directed to a technique of purging unwanted particles from the interior of a valve body. Inlet and outlet ports are formed in the valve housing to allow for circulation of the fluid within the valve body. The flow path of the fluid is isolated from the main fluid flow path when the valve is in the open or closed position. Additionally the pressure of the fluid is at a level higher than that of the main fluid flow.

Abstract: A valve system intermediate a secondary flow path and a primary flow path to selectively communicate secondary airflow into the primary gas flow path and control airflow injected from a higher pressure plenum into a lower pressure flowpath.

Abstract: An apparatus for selecting a flow rate of a fluid includes an axle including an elongated cylindrical member having flow paths, each flow path being defined by a corresponding set of radial holes, each set of radial holes comprising at least one radial hole that extends substantially between an outer surface of the axle and an interior cavity of the axle, and a barrel including an elongated cylindrical member within which the axle is disposed, the barrel having input ports and an output port, the barrel being configured to enable the axle to rotate about an axis of rotation that extends along a length of the axle, wherein a flow rate of a fluid is selected by rotating the axle to a position so that a set of radial holes is in alignment with one or more ports of the barrel.

Abstract: An improved hemi-wedge type valve is disclosed that has upstream and downstream sealing surfaces that cooperate with opposed surfaces on the hemi-wedge valve member. This results in improved sealing and less leakage, at both high and low pressures.

Abstract: The invention provides a valve comprising a house and a drum rotatable in the house. The house comprises a plurality of substantial identical tubular mid-section house members, a bottom house member, and a top house member. When connecting the house members to each other, a continuous outer wall surrounding a house cavity, a port, and a plurality of nozzles being in fluid communication with the house cavity is provided. The drum comprises a plurality of substantial identical tubular mid-section drum members, a bottom drum member, and a top drum member. When connecting the drum members to each other, an inner wall having an outer surface being adapted for rotation in contact with a corresponding inner surface of the outer wall, the inner wall comprising a plurality of conduits is provided. During rotation of the drum, the conduits can be brought into and out off fluid communication with the nozzles in order to provide passages between the port and the nozzles.

Abstract: A valve handle assembly for a valve having an outwardly extending rotatable stem for opening and closing the valve by rotation of the stem includes a stop plate for engaging the stem, a handle for rotating the stem by engaging and rotating the stop plate, and a cup washer for engaging the handle and retaining the stop plate and handle on the stem upon placing a nut on the stem and tightening of the nut. The handle has an internal lip for retaining the handle and the cup washer has a raised flange for engaging the lip to retain the handle upon tightening of the nut.

Abstract: A valve body defines a fluid passage and a valve sealing body is positioned there. The valve sealing body is operable between open and closed positions which allow for fluid-flow and non-flow, respectively. The valve stem has a free end and an engagement end where the engagement end engages the valve sealing body so that rotation of the valve stem operates the valve sealing body between the open and closed positions. A measurement passage is defined through the valve stem from the free end to the engagement end. The measurement passage is in fluid communication with the fluid passage when the valve sealing body is in the open position, and at least one sealing member is positioned within the measurement passage.

Abstract: A straight-through rotary valve structure includes: a case having an internal conic receiving space with an opening, a first extension section being disposed at a tip of the receiving space, a second extension section being disposed beside the first extension section; a conic rotary valve block having a pivot shaft and formed with a first hole and a second hole, the first hole communicating with a third hole formed at a tip of the rotary valve block in communication with the first extension section, the second hole communicating with a fourth hole formed on a conic face of the rotary valve block; and an outer cover blocking the opening of the case. The outer cover is formed with a central shaft hole through which the pivot shaft passes. The outer cover is further formed with a first perforation and a second perforation corresponding to the first and second holes respectively.

Abstract: Systems and methods for metering fluid flow are disclosed. A valve may generally include an orifice plate, and a disc positioned adjacent to the orifice plate. An orientation of the disc relative to the orifice plate is adjustable to regulate a fluid flow rate through the valve. An effective area of an aperture in the orifice plate may be manipulated to adjust the fluid flow rate. In some configurations, the valve may provide sonic flow control or differential pressure regulation. In some applications, a controller may adjust the orientation of the disc relative to the orifice plate to maintain a substantially constant pressure drop across the orifice plate in order to determine a fluid flow rate through the valve.

Abstract: A wafer-style valve assembly adapted to be coupled between opposing pipeline components having a common centerline secured together by a plurality of longitudinal fasteners includes a substantially cylindrical valve body, a seat retaining plate, and at least one clip. The valve body has a peripheral edge portion and an axial end surface. The seat retaining plate is disposed on the axial end surface. The at least one clip is also disposed on the axial end surface and extends radially outward of the peripheral edge portion. The clip has a radially inward portion and a radially outward portion. The radially inward portion secures the seat retaining plate to the to valve body. The radially outward portion has an edge defining a first recess and a second recess. The first and second recesses are each adapted to accommodate a longitudinal fastener to locate the valve assembly relative to the centerline of the pipeline.

Abstract: Valve actuator system and a system for operation of valves, which valve comprises a valve housing, which valve housing comprises at least one inlet and at least one outlet, which valve housing further comprises a valve closing element, which valve element is mechanical connected to a valve actuator, which valve actuator comprises at least one piston, which piston is moved in a housing by a pressurised fluid in at least one direction, which valve actuator is connected to a control valve which control valve regulates a flow of a liquid medium from a pressure source to a first cavity chamber in the hosing of the valve actuator where the valve is a sanitary valve primarily for regulation of a flow of Fluid food, which valve actuator is activated by a liquid medium.

Abstract: A rotary valve for metering the flow of particulate material from a supply source into the air stream of a pneumatic conveying system includes a central rotor manufactured through a precision casting process. The rotor is formed with a plurality of radially extending vanes terminating in tips that are flared circumferentially into the leading side of the vane to provide a flared vane tip that is preferably at least twice the thickness of the vane itself. The valve housing is formed with an elongated release port that has an overall length approximately equal to the length of the pockets formed between adjacent vanes to provide a more complete release of pressurized air from the pocket after the particulate material has been dropped into the pneumatic conveying system. The angled leading edge of the flared tips provides a less aggressive engagement with the particulate material to reduce damage thereto.

Abstract: Apparatus to mount process control devices to actuators are described. An example includes a mounting plate having a first side to receive the process control device and a second side opposite the first side, where the second side includes a first clamping finger extending away from the second side and configured to engage a first edge of an actuator yoke. The example apparatus also includes an elongated clamp arm having second and third clamping fingers adjacent respective ends of the elongated clamp arm, where each of the second and third clamping fingers is configured to engage a second edge of the actuator yoke opposite the first edge, and where the elongated clamp arm is slidably coupled to the mounting plate. Additionally, the example apparatus includes a fastener adjustable to cause the elongated clamp arm and the mounting plate to slide toward each other so that the first, second and third clamping fingers engage the respective edges of the yoke to fix the mounting plate relative to the yoke.

Abstract: A flow control valve has upstream fluid pressure outlets provided between inner and outer circumferential surfaces of an upstream retainer, which is attached to an upstream inner surface of a valve body. A second conduit is provided between inner and outer surfaces of the valve body on the upstream side of the valve body. First conduits are formed between the valve body and the upstream retainer. Downstream side fluid pressure outlets are provided between inner and outer surfaces of a downstream retainer, which is mounted to the inner surface of the valve body. A fourth conduit is provided between the inner and outer surfaces of the valve body on the downstream side of the valve body. Third conduits are formed between the valve body and the downstream retainer. A differential pressure sensor is attached to the outer surface of the valve body and to the second and fourth conduits.

Abstract: A subcutaneous valve having a body defining a chamber and including an inlet orifice and an outlet orifice opening out into the chamber, a shutter member suitable for closing the inlet orifice, at least in part, a resilient return member configured to hold the shutter member against the inlet orifice to regulate the passage of liquid through said inlet orifice, and a rotor housed in the chamber having a cam-forming surface, the resilient return member bearing against the cam-forming surface of the rotor by forming a moving contact with this surface.

Abstract: A double check valve (10) with two separate elements (20, 25) individually movable to close the valve and collectively movable to open the valve. The separate elements are independently closing the valve, and collectively controllable to open the valve, to allow pressure release or to allow injection of fluid (e.g. lubricant). In an example, the double check valve includes two separate check valves with a stinger element (30) between them which is operable to internally sting the one check valve when (e.g. by action of) the other check valve is stung by a user (e.g. using a stinger means) thereby to open both check valves individually and the double check valve as a whole.

Abstract: A valve comprises a housing and at least three ceramic discs in the housing such that at least two fixed ceramic discs are provided and at least one rotatable ceramic disc is provided between the fixed ceramic discs. The ceramic discs comprise through holes such that when the holes are aligned, the valve is open, and turning the rotatable ceramic disc turns the holes to be misaligned in successive ceramic discs, which prevents water flow through the valve. The valve further comprises a handle for rotating a rotatable ceramic disc and the handle comprises a stem extending through the housing, and a curved part, the curved part curving at least partly around the housing along the circumference of the housing.

Abstract: A rotary valve for selectively connecting at least one component (51, 52) into a fluid path. According to the invention the inner stator face (111a, 211a) comprises orifices (131b-136b; 231b-236b) and said inner rotor face (112a, 212a) comprises at least a first groove (121, 221), a second groove (122, 222), and a third groove (123, 223) so arranged that the rotary valve can take at least three different rotary positions, in which either both components are bypassed, only one of the components is connected and the other bypassed or both components are connected to a main flow.