Abstract: A pressure control valve for gases and/or liquids comprising a first sealing body and a second sealing body for opening and closing a first flow path and a second flow path, respectively. The first and the second sealing bodies can be installed in an inflow for gases and/or liquids in order to define the first and the second flow paths therein. The first sealing body is guided in an axially movable fashion. The second sealing body is guided in an axially movable fashion within the first sealing body. The first sealing body is movable by a force in the effective direction from an outflow to an inflow from a closing position into an opening position in which the first flow path is opened. The second sealing body is movable by a force in the effective direction from the outflow to the inflow from a closing position into an opening position in which the second flow path is opened.

Abstract: A regulator for compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the gas inlet and gas outlet; a pressure reducer with, in the gas passage, a shut-off device and a movable assembly operatively connected to the shut-off device and delimiting with the body a regulating chamber downstream of the shut-off device; a pressure relief device in the gas passage downstream of the regulating chamber; and a flow restriction in the gas passage upstream of the shut-off device, dimensioned for reducing the gas pressure at the gas outlet under a maximum pressure value when the pressure relief device is opened and the shut-off device is opened.

Abstract: A one-piece flap valve (150) comprising first and second portions hingedly connected to one another by a flexible strip, the first portion having a hingeable internal valve flap (152) and the second portion comprising an at least partially annular valve seat (154). The first and second portions being socket-fitted together by relative movement, such that the valve seat (54, 154) is spanned by the flap (152), the second portion comprising first and second legs (121a, 121b) having first and second locking lugs (127a, 127b) extending radially outwardly therefrom, the locking lugs for location within locking apertures (125a, 125b) of a tube body (10) of a dispenser. The flap valve (150) comprising a retaining mechanism configured and arranged such that once the flap valve is installed in a tube body of a dispenser, the retaining mechanism resists against radially inward displacement of the first and second legs.

Abstract: A fuel supply valve configured to supply fuel from a fuel tank to a stack is provided. The fuel supply valve includes a plunger that has a hollow portion and a housing having with a cavity in which the plunger is configured to move. Additionally, a contact member is disposed between the housing and the plunger to be in contact both with one side of the housing and with one side of the plunger, the contact member maintaining airtightness between the housing and the plunger.

Abstract: An ocean depth automatic compensation type full-ocean-depth hydraulic control water stop valve includes a valve body having an inlet and outlet on a side thereof; a valve sleeve assembly embedded in the valve body; and a valve core assembly. The valve sleeve assembly includes a spring cover; a pressure rod valve sleeve; a valve core cover; a valve seat; a pressing piece; a push rod valve sleeve base body; and a screw plug. The valve core assembly includes a pressure rod; a valve core; and a push rod.

Abstract: A check valve supplies fluid to a system and includes a fluid barrier protects the sealing elements and surfaces of the check valve preventing degradation from any backflow of gas and debris from the system to which fluid is supplied.

Abstract: The invention relates to a regulating device for a turbocharger. The regulating device (8) is received in a turbocharger (2) exhaust gas conducting section (1) through which exhaust gas can flow, and a fluid flow to a turbine wheel which is rotatably received in the exhaust gas conducting section (1) can be conditioned using the regulating device (8). A flow channel (10; 31) which is formed in the exhaust gas conducting section (1) is to be opened and closed using a cover element (9) of the regulating device (8), and the cover element (9) is arranged on a regulating device (8) pivot arm (38) which can be pivoted about a rotational axis (34). According to the invention, the cover element (9) is designed to open and close a flow channel designed as a bypass channel (31) for bypassing the turbine wheel and/or for opening and closing a flow channel, which is designed as a through-flow opening (10), between a first spiral channel (4) and a second spiral channel (5) of the exhaust gas conducting section (1).

Abstract: Various exemplary illustrations of a coating agent device are disclosed. In one example, a coating agent device may be a coating agent valve, e.g., for influencing the discharge of a coating agent. The coating agent device may include a plug-in or pluggable fastening base configured to facilitate a plug-in or pluggable mounting of the coating agent device. In some examples, the coating agent device may prevent relative rotation of the device relative to a mating component.

Abstract: Various exemplary illustrations of a coating agent device are disclosed. In one example, a coating agent device may be a coating agent valve, e.g., for influencing the discharge of a coating agent. The coating agent device may include a plug-in or pluggable fastening base configured to facilitate a plug-in or pluggable mounting of the coating agent device. In some examples, the coating agent device may prevent relative rotation of the device relative to a mating component.

Abstract: A turbocharger wastegate assembly includes a turbine housing that includes a chamber, a bore, two exhaust passages, a divider wall disposed between the two exhaust passages, and a wastegate seat, where the divider wall includes a divider wall surface; and a wastegate that includes a shaft, an arm and a plug, where the shaft is received by the bore of the turbine housing for rotation about an axis of the shaft to orient the plug in a closed state and to orient the plug in an open state, where, in the closed state, a contact portion of the plug contacts the wastegate seat and a shell portion of the plug defines a clearance with respect to the divider wall surface and extends into the two exhaust passages.

Abstract: Provided is a coupling device including a cylindrical housing portion, a valve portion that turns into an open state by contact with the plug device, a bellows portion having therein an expandable and contractible supply passage for supplying incompressible fluid from the plug device to a supply tube, a moving portion being movable to be brought into contact with or distanced from the plug device fitted inside one end side of the housing portion, a first pressure chamber generating a biasing force in a direction to distance the moving portion from the plug device and contract the bellows portion, and a safety valve for discharging the incompressible fluid within the supply passage to the outside when the incompressible fluid within the supply passage reaches or exceeds a predetermined level.

Abstract: A display device is arranged in a faucet at a temperature detection zone to detect a temperature of water flowing therethrough and includes a sealing housing formed therein with an upper receiving space and a lower receiving space in communication with each other and having a bottom having a discharge hole extending therethrough; a circuit board arranged in the upper receiving space; a display module electrically connected with the circuit board; a temperature detection unit electrically connected with the circuit board and partly exposed outside the sealing housing; a hydraulic power generation module arranged in the lower receiving space and electrically connected with the circuit board, the display module, and the temperature detection unit; and a bottom cover fit to the bottom of the sealing housing in a manner of not covering the discharge hole and having a lower opening for entry of the mixture warm water.

Abstract: A nozzle system including a nozzle body having a fluid path through which fluid to be dispensed is flowable. The system includes a fluid valve positioned in the fluid path and movable between a first position and a second position, and a manually operable lever operatively coupleable to the fluid valve and movable between a first position and a second position. The system further has a biasing mechanism configured to apply a force biasing at least one of the valve or the lever to one of the associated first or second positions, and a magnetic assist system configured to apply a magnetic force opposing the biasing force applied by the biasing mechanism.

Abstract: A tube coupling device having a check valve contains: a coupling body and a valve assembly. The coupling body includes a tubular member and a circular connecting seat, the tubular member is hollow to flow water, and the coupling body also includes an isolation sleeve for covering on an inner wall of the tubular member, such that the isolation sleeve separates the water from the tubular member, and the isolation sleeve has a flow channel for flowing the water. The locking set is disposed between the tubular member and the isolation sleeve and includes a protruded rib extending inwardly around the tubular member and retained between the isolation sleeve and the tubular member. The locking set also includes a retaining groove formed on the isolation sleeve and retaining with the protruded rib, and the retaining groove engages with the protruded rib and covers three sides of the protruded rib.

Abstract: The present disclosure relates generally to a faucet valve cartridge configured for use within a dual handle faucet. The valve cartridge includes an upper plate and a bottom plate received within a valve housing and configured to control fluid flow from an inlet to an outlet. The valve may include anti-water hammer port geometry to reduce turbulent flow and shut-off shock wave noise.

Abstract: An air pressure regulator includes an air input stage, an air output stage, and a transfer stage. The air input stage, air output stage, and transfer stage arranged substantially in-line, end to end along a longitudinal axis. The air input stage is attached to the transfer stage with first fasteners that simultaneously engage with the transfer stage and pressure fit a first pressure step-down piston against an input stage backpressure assembly, and the air output stage is attached to the transfer stage with second fasteners that simultaneously engage with the transfer stage and pressure fit the second pressure step-down piston against an output stage backpressure assembly.

Abstract: A valve assembly is provided which, in one aspect, includes a check valve in series with a butterfly valve without the need for a spacer or spool piper separating the check valve and butterfly valve. In one example, check valve may include a poppet comprising a plurality of guide legs extending into the downstream portion of the check valve. Butterfly valve may include at least a portion of a rotating disk is disposed within a downstream portion of the check valve. The plurality of guide legs may include distal ends that are configured or contoured to avoid interference with the rotating disk of the butterfly valve.

Abstract: A turbine housing includes a bore, a wastegate seat and a wastegate passage; a bushing disposed at least in part in the bore; a rotatable wastegate shaft that includes a shoulder and a control end; a control arm operatively coupled to the wastegate shaft where the bushing is disposed between a surface of the control arm and the shoulder; a wastegate arm that extends from the wastegate shaft where the shoulder is disposed between the wastegate arm and the control end of the wastegate shaft; and a wastegate plug that extends from the wastegate arm where the wastegate plug includes a toroidal surface defined by a portion of a torus where, in a closed state, the toroidal surface contacts the conical surface of the wastegate seat to cover the wastegate passage.

Abstract: A pressure control valve for a high-pressure accumulator of an injection device of an internal combustion engine, includes a magnetic actuator. The magnetic actuator has a magnetic core with contacting pins and a magnetic armature with an armature plate. The contacting pins pass through feedthroughs formed in the armature plate. The armature plate is hydraulically connected by a pressure equalization channel to a valve chamber connected to low pressure. The pressure equalization channel has an opening on the magnetic core end face which opens into the armature space. At least one of the feedthroughs forms a passage for the fuel through the armature plate for the pressure equalization. A residual air gap disk is arranged between the magnetic core and the armature plate. The residual air gap disk forms an additional feedthrough with a radial extension that extends in the direction of the opening.

Abstract: A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes a plurality of concentric fluid passages, connected by a set of radial conduits.

Abstract: An enclosure for a valve assembly includes a base having an opening that allows a portion of a valve assembly to pass therethrough, and a valve handle shroud, extending from the base, to encapsulate a handle/stem assembly of the valve assembly.

Abstract: A plumbing fixture having at least a housing, which forms an opening surrounded by a collar and an interior space, a fastening member, which can be disposed adjacent to the collar in the housing, a cartridge holder, which can be positioned in the interior space, a cartridge, which can be positioned at least partially in the interior space, and a tensioning member, which by direct contact can tension at least the cartridge or the cartridge holder against the fastening member.

Abstract: The present disclosure relates generally to a faucet valve cartridge configured for use within a dual handle faucet. The valve cartridge includes an upper plate and a bottom plate received within a valve housing and configured to control fluid flow from an inlet to an outlet. The valve may include anti-water hammer port geometry to reduce turbulent flow and shut-off shock wave noise.

Abstract: An assembly can include a turbine housing that includes a bore, a wastegate seat and a wastegate passage that extends to the wastegate seat; a bushing configured for receipt by the bore; a rotatable wastegate shaft configured for receipt by the bushing; a wastegate arm extending from the wastegate shaft; and a wastegate plug extending from the wastegate arm where the wastegate plug includes a contact portion that contacts the wastegate seat to cover the wastegate passage in a closed state and a shell portion that extends into the wastegate passage in the closed state and that defines a clearance with respect to the wastegate seat in an open state. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: The invention relates to a fuel injection system having a return line connector, having a return inlet and at least two return outlets. To improve the service life of the fuel injection system, a check valve device, which prevents the passage of a fluid from the return outlets to the return inlet is integrated with the return line connector. A return line connector is provided for each fuel injector in the fuel injection system.

Abstract: A valve arrangement controls brake devices and auxiliary devices of a pneumatic brake system of a vehicle, and includes pneumatic control valves which are detachably arranged on at least one common support module containing compressed air channels, for carrying out braking functions or auxiliary braking functions of the brake system. The valve arrangement also includes several adjacently arranged block-shaped support modules having at least the same height and depth measurements and including channel sections forming common longitudinal channels when all of the support modules are adjacently arranged in a row. At least one unit hole receives a control valve embodied as a cartridge valve and arranged on a front side of each support module to enable switching the compressed air flow between inner channels.

Abstract: A discharge valve assembly includes: a valve casing that has an intake bore, an air chamber communicating with the intake bore, and a discharge aperture communicating with the air chamber; a metal intermediate ring disposed in the air chamber and having a valve hole that communicates with the air chamber, and at least one connecting aperture that communicates with the discharge aperture and the valve hole; a base ring that retains the metal intermediate ring in the air chamber and is mounted on the valve casing; and an adjuster that is disposed in the base ring and movable relative to the base ring to adjust an air flow through the valve hole.

Abstract: A valve assembly for use in high pressure pumps is designed for easy replacement for example in the suction inlet here for a high pressure pump. The design utilizes a combination of screw threads and a locking member to provide structural strength for the valve to be placed in and withdrawn from the inlet bore.

Abstract: A regulator for gas having a diaphragm rod held at the center of a diaphragm of which rim is sandwiched between a body and a cover via diaphragm retainers, and a valve element capable of seating itself at a valve seat fixedly placed in the body with a valve hole opening at the center provided in an intermediate portion of a valve shaft having its one end detachably coupled to the diaphragm rod and its other end slidably fitted in a guide opening provided on the body side, wherein the body (34) is equipped with a valve action unit (120) formed by assembling in advance a valve seat member (100) having a valve hole (111) and the valve seat (112) provided thereon, a guide member (106) having a guide opening (105) and pressed into the valve seat member (100), and a valve shaft (114) having a valve element (113) provided thereon in a state of having one end of the valve shaft (114) projected from the valve hole (111) and the other end of the valve shaft (114) slidably fitted into the guide opening (105) It is there

Abstract: A flow control valve (11) for a hydraulic line, having an outlet opening (18a) for hydraulic fluid, an inlet opening (18) for hydraulic fluid and a differential pressure regulator (17) for the pressure independent provision of a constant volumetric flow of the hydraulic fluid, and having a setting part (15a) for setting the control behavior of the differential pressure regulator (17), the setting part (15a) having an operating section (27) which is provided so as to be accessible outside the hydraulic line for setting the setting part (15a).

Abstract: An unfreeze faucet structure includes a watering control valve having a body; a control shaft, an upper ceramic member, and a lower ceramic member connected with the body; a valve seat locked to the body; wherein the control shaft includes a watering cavity and a positioning groove mounted in a lower section thereof, the watering cavity includes a check element and a stopping unit installed therein, the check element includes a disk-shaped cover arranged on a bottom end thereof, the cover includes a first stop loop fitted to a peripheral side thereof, between the cover and the watering cavity is defined with a spring, the stopping unit includes a trench disposed therearound to contact with the first stop loop, the control shaft includes a second stop loop fitted on an outer periphery thereof and a third stop loop arranged therearound to engage with an inner wall of the watering cavity.

Abstract: A valve assembly is disclosed for mounting through a wall having a first face and a second face defining a thickness there between. The valve assembly includes a valve body housing having an axially-extending inner bore. A valve body is telescopically received in the inner bore of the valve body housing, such that the valve body is axially movable with respect to the valve body housing. A valve is nested in a recess of the valve body. A locking element selectively engages the valve body housing and the valve body to lock a position of the valve body relative to the valve body housing.

Abstract: A ball valve cartridge is disclosed. It is especially well suited for freezeless hydrant applications and any other application where it is positioned remotely from a handle or other actuating element. The cartridge contains a ball valve element and an internal stem with a key for rotating the ball valve element between open and closed positions. The stem has rotational stop elements that limit rotational movement of the stem and the ball valve element. In a yard hydrant application, a drain valve can be added to regulate the opening and closing of the drain hole. It has an operational range of a quarter turn or ninety degrees.

Abstract: The present disclosure relates generally to a faucet valve cartridge 10 configured for use within a dual handle faucet 16, 18. The valve cartridge 10 includes first and second fluid flow control members 94 and 96 received within a valve housing 74 and configured to control fluid flow from an inlet 32, 36 to an outlet 29.

Abstract: A modular valve system includes at least one valve housing (40) having standard rate quantities on its opposite ends (38, 42), both on the inner peripheral side and on the outer peripheral side and inside the housing (52). Modular valve components, such as a valve piston (46), at least one energy accumulator (26), a pilot-controlled element, and at least one fluidic connection are mounted in the housing. The housing provides for fixing the valve embodied in the form of a screw-in cartridge for connection to other components.

Abstract: Sanitary fitting (10, 10A) with an outlet (38) and a first supply line connection (74) connected hydraulically thereto and capable of being connected to a first source of liquid, with a pilot valve arrangement (48) arranged hydraulically between the first supply line connection (74) and the outlet (38), and with a second supply line connection (76) capable of being connected to a second source of liquid. The sanitary fitting (10, 10A) also exhibits a control device (50), which is connected on the inlet side to the first and the second supply line connection (74, 76) and on the outlet side to the pilot valve arrangement (48), the pilot valve arrangement (48) being permanently connected by hydraulic means via the control device (50) to at least the first supply line connection (74) or the second supply line connection (76).

Abstract: Valve arrangement for spray damping units of printing machines with at least one valve for controlling a flow of liquid, in which the valve includes a housing with an inlet and outlet, into which a valve body arrangement is inserted with the help of a fast-action closure.

Abstract: An improved structure of straight-out controllable ceramic valve of anti-freezing faucet, which is comprised by cover water-receiving valve seat with open bottom, cylinder water-controlling shaft bolt that one end is covered into shaft hole at center of water-receiving valve seat and a plurality of butterfly outlet control valves, wherein bottom of water-controlling shaft bolt has a protruding tongue embedding into top of bottom butterfly porcelain shard in order to adjust outlets of top and bottom porcelain shard; its features are as follows: an inlet channel extending to middle section of shaft bolt is made at middle section of bottom of water-controlling shaft bolt, horizontal through outlet channel is made at two sides of inlet channel.

Abstract: The invention relates to a valve which is insertable into a receiving recess (21) of a valve carrier (22), the valve (1, 1?) comprising a first housing part (2, 2?) and a closing body (4). The closing body (4) cooperates with a sealing surface (9) to form a sealing seat, the valve (1, 1?) being fixable in the receiving recess (21) of the valve carrier (22) by means of the first housing part (2, 2?). A second housing part (3, 3?) is connectable by way of a first end (7) to the first housing part (2, 2?) and the sealing surface (9) cooperating with the closing body (4) is formed on the second housing part (3, 3?).

Abstract: The drain plug bolt includes a shank having a head and tip. An interior bore extends longitudinally from the tip for a predetermined distance less than the shank total length. The shank includes an externally threaded portion distal to the head, an externally threaded portion proximal to the head, and an unthreaded middle portion between the distal and proximal portions of the shank. The middle portion includes a counter-bore that forms a drain hole and extends from a radial surface of the shank middle portion to the longitudinally extending internal bore to create a passageway that leads from the internal bore to the exterior of the drain plug. Tightening the drain plug against the fluid reservoir, retains fluid within the reservoir. Loosening, the drain plug until the distal threads are in communication with the fluid reservoir allows fluid to escape the reservoir via the passageway in the drain plug.

Abstract: A faucet valve cartridge for controlling fluid flow through a dual-handle faucet, including a valving member supported within a valve body for rotation about a longitudinal axis. A first sealing surface and a first inlet opening is supported by the valving member. A seat includes a second sealing surface and a second inlet opening. The first inlet opening is configured to be in selective fluid communication with the second inlet opening upon rotation of the valving member. A retainer couples the seat to an outer wall of the valve body.

Abstract: A valve assembly for plumbing installations. The valve assembly has a unitary valve body with three interconnected ports and a fluid control mechanism. Connector portions are formed about each port of the unitary valve body to thereby enable connection of the valve assembly into a fluid supply line and for connecting an appliance and various devices and fluid lines to the valve assembly. The fluid control mechanism of the valve assembly is constructed to direct fluid through the valve body and to enable the fluid flow to be shut off.

Abstract: A drain plug (300) for a fluid passage (506), the drain plug (300) including a head portion (302), a shank portion (304) connected to the head portion (302), a threaded portion (306) that is connected to the shank portion (304) and includes a solid segment (312) that is located adjacent to the shank portion (304), and a partial portion (314) having at least one cutout (316), and a lead-in portion (308) that is connected to the threaded portion (306) and located adjacent to the partial portion (314). A fluid path is defined between the fluid passage (506) and the at least one cutout (316) of the drain plug (300) when the drain plug (300) is partially removed from the fluid passage (506).

Abstract: A fluid control valve has at its lower inlet end a bi-loading seal. The seal is generally ring shaped in top view. However, it has a first flexible load section for sealing the stationary disk with respect to the housing and a second load section having an annular insert that in cross-section is hook-shaped to form a bend of more than 90 degrees. The insert can be molded within the resilient body of the seal so that its outer rim is disposed at a circular shoulder that bears against a seal stop of the housing. A high load can thus be applied between the bearing shoulder and seal stop to achieve a tight seal, while a lower load can be applied between the flexible, unrigidified part of the seal and a stationary valve disk.

Abstract: The present invention is directed to an subsea valve assembly having a fixed orifice insert that can be removed and replaced using a remotely operated vehicle (ROV). The valve assembly includes a removable orifice insert holder and a threaded receptacle housing into which the removable orifice insert holder is received. The remotely operated vehicle (ROV) installs the removable orifice insert holder into the threaded receptacle in situ. The remotely operated vehicle (ROV) can remove an existing removable orifice insert by removing the removable orifice insert holder and replacing the removable orifice insert holder with another the removable orifice insert holder that has been pre-assembled at the surface with a removable orifice insert of a different size. Thus, the valve assembly according to the present invention can be used to control the flow rate of a subsea fluid using a replaceable fixed orifice insert.

Abstract: A check valve having a valve housing inserted into a receptacle in which housing a pistonlike valve member is guided longitudinally displaceably and cooperating with a valve seat on the valve housing. The valve member is urged in the closing direction by a prestressed closing spring and in the opening direction by the pressure prevailing in an inlet, and the valve member is inserted into the valve housing from the side of the valve seat. The valve housing is embodied in one piece and is embodied as cup-shaped and has both a bottom and a jacket region that defines a recess. With the open end of its recess, the valve housing points out of the receptacle, and the valve seat is located on the bottom of the valve housing, facing away from the recess. With a shaft, the valve member protrudes through a bore in the bottom into the recess in which the closing spring is located.

Abstract: A valve core for opening and closing a core mounting throughbore includes a cylindrical core body fixed inside the throughbore and having a distal opening, a moving shaft inserted through the core body so as to be directly moved and having an end, a plug formed integrally at the end side of the moving shaft so as to open and close the distal opening of the core body, a biasing member biasing the moving shaft so that the distal opening of the core body is closed by the plug, a cylindrical sealing member, an outer sealing portion formed integrally on the cylindrical sealing member and fitted with the outer periphery of the core body so as to be held between the core body and the inner wall of the throughbore thereby to adhere closely to the outer periphery of the core body, and an inner sealing portion formed integrally on the cylindrical sealing member so as to adhere closely to an outer face of the plug.

Abstract: A flow control valve has a ball and an annular seat providing a positive stop for automatically preventing flow through the valve when a line downstream has been broken. The flow control valve is useful for interior applications in which seepage through the valve would be unacceptable and in which both hot and cold water lines need to be protected. A magnet may aid in positioning the ball. Sensors may be used to detect positions of the ball. A flow control system that includes the flow control valve may include any of a variety of interchangeable components for facilitating incorporation of the flow control valve in a water or other fluid line. Another embodiment includes a mechanism for detecting and stopping flow due to slow leaks.

Abstract: A flow regulator with pressure relief combination valve is disclosed which can include a housing and a valve assembly. The housing can have a chamber and four ports. A cage, having a plurality of cross holes, is supported by the housing. A hollow spool is slidably disposed within the cage and is biased to engage the cage. A shoulder of the cage and a counterbore of the spool cooperate to interferingly retain an insert. A poppet is slidably disposed inside of the cage. The valve assembly includes an adaptor, a spring disposed within the adaptor, a guide disposed between the spring and the poppet, and an adjuster adjustably secured to the adaptor. The spring is arranged to bias the poppet against a seat via the guide. The adjustor is movable to adjust the position of the spring.

Abstract: Within a check valve, a spring urges a poppet into the closed position. If the fluid flow through the valve attempts to reverse, the poppet will seal against the valve seat by a combination of spring resistance and fluid pressure, thereby preventing all or a significant portion of fluid flow back through the valve body. The poppet is retained in the valve body by a retainer or other suitable part or combination of parts that can be removed for service of the check valve assembly.