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1-01 Automatic valve Self-acting valve A valve that acts by itself depending on the ability of the medium itself
1-02 Actuated valve A valve that is operated by hand, electricity, hydraulic pressure or air pressure
2-01 Gate valve, slide valve The opening and closing member (gate) is driven by the valve stem and moves up and down along the sealing surface of the valve seat.
2-02 Parallel gate valve, parallel slide valve A gate valve in which the sealing surfaces on both sides of the gate are parallel to each other
2-03 Wedge gate valve Wedge gate valve Gate valve with wedge-shaped sealing surfaces on both sides of the gate
2-04 Outside screw stem rising through handwheel type gate valve
2-05 Rotating stem gate valve Inside screw nonrising stem type gate valve A gate valve in which the valve stem rotates and its transmission thread is inside the body cavity
2-06 Quick open-and-close gate valve A gate valve in which the valve stem both rotates and moves up and down
2-07 Contraction cavity gate valve The diameter of the passage in the valve body is different, and the diameter of the sealing surface of the valve seat is smaller than the diameter of the flange connection.
2-08 Flat gate valve This type of gate valve can be divided into with diversion hole and without diversion hole. Flat gate valve with diversion hole can pass ball pigging, flat gate valve without diversion hole can only Used as an opening and closing device on a pipeline
3-01 Butterfly valve The valve whose opening and closing member (butterfly plate) rotates around a fixed axis
3-02 Center line-type butterfly valve The center of rotation of the butterfly plate (ie the center of the valve shaft) is located on the center line of the valve body and the sealing section of the butterfly plate.
3-03 Single-eccentric center butterfly vale A butterfly valve in which the center of rotation of the disc (ie, the center of the valve shaft) is located on the centerline of the valve body and forms a dimensional offset with the sealing surface of the disc
3-04 Double-eccentric center butterfly valve The rotation center of the butterfly plate (ie the center of the valve shaft) forms a dimensional offset with the sealing section of the butterfly plate, and forms another dimensional offset with the center line of the valve body.
3-05 Three-eccentric center butterfly valve The rotation center of the butterfly plate (ie the center of the valve shaft) forms a dimensional offset with the sealing surface of the butterfly plate, and forms another dimensional offset with the center line of the valve body; the valve body seals The centerline of the face and the centerline of the valve seat (ie, the centerline of the valve body) form an angular offset valve
4-01 Rotary valve A valve in which the opening and closing parts rotate relative to the axis of the valve seat sealing surface
4-02 Ball valve The valve in which the opening and closing member (ball) rotates around the axis perpendicular to the passage
4-03 Float ball valve Ball valve without fixed shaft
4-04 Fixed ball valve Ball valve with fixed shaft
4-05 Flexible ball valve
4-06 Plug valve Cock, plug valve whose opening and closing member (plug) rotates around its axis
4-07 Clampyte plug valve There is no packing in the plug body, and the sealing between the plug and the sealing surface of the plug body is realized by tightening the nut under the plug.
4-08 Cland packing plug valve Cland packing plug valve
4-09 Self-sealing plug valve Self-sealing plug valve The sealing between the plug and the plug body mainly depends on the pressure of the medium itself to realize the plug valve
4-10 Lubricated plug valve Oil-sealed plug valve
4-11 Spindle valve Cock, plug valve whose opening and closing member (cylindrical plug) rotates around its axis
5-01 Baffler valve The valve in which the opening and closing parts (baffles) move relative to the sealing surface of the valve seat and beyond the sealing surface of the valve seat, but does not pass through the sealing surface of the valve seat
5-02 Globe valve, stop valve The valve whose opening and closing parts (valve disc) are driven by the valve stem and move up and down along the axis of the valve seat (sealing surface)
5-03 Outside screw stem stop valve
5-04 Inside screw stem stop valve
5-05 Globe valve Globe valve A globe valve in which the inlet and outlet channels of the medium are in the same direction and are 180°
5-06 Angle pattern globe valve The globe valve with the inlet and outlet channels of the medium forming a 90° angle
5-07 Three way stop valve Three way stop valve
5-08 Oblique type globe valve Globe valve with stem and channel at a certain angle
5-09 Plunger type globe valve Plunger type globe valve is a deformation of conventional globe valve. Its disc and valve seat are designed according to the principle of plunger; the valve disc is designed as a plunger, and the valve seat is designed Complete ring, sealing by the cooperation of the plunger and the ring
5-10 Needle globe valve The size of the valve seat hole is smaller than the nominal diameter of the globe valve
6-01 Throttle valve is a valve that changes the cross-sectional area of the passage through the opening and closing parts (valve) to adjust the flow. Pressure
6-02 Trench type disc throttle valve is commonly used in expansion valve in cryogenic devices
6-03 Window type disc throttle valve Suitable for throttle valve with larger nominal diameter
6-04 Plug disc throttle valve Suitable for medium and small diameter throttle valve
7-01 Check valve, Non-reture valve The opening and closing parts (valve disc) rely on the force of the medium to automatically prevent the backflow of the medium
7-02 Swing check valve Swing check valve A check valve in which the valve disc rotates around the fixed axis in the body cavity
7-03 Single disc swing check valve Single disc swing check valve Swing check valve with only one disc
7-04 Multi-disc swing check valve Multi-disc swing check valve Swing check valve with more than two discs
7-05 lift check valve
7-06 Foot valve It is a check valve installed at the suction pipe end of the pump to ensure that the suction pipe is filled with water
7-07 Spring-loaded lift check valve Spring-loaded lift check valve This valve can not only reduce the water hammer pressure, but also has a smooth flow channel and small flow resistance.
7-08 Spring-loaded annular disc lift check valve Spring-loaded annular disc lift check valve Compared with the lift check valve of the usual structure, the valve has a smaller disc stroke, and the action of the spring load makes it close rapidly, therefore, more conducive to reducing the water hammer pressure
7-09 Multi-annulus lift check valve Multi-annulus lift check valve The valve has a smaller disc stroke, so it closes more quickly
7-10 Butterfly swing check valve The shape is similar to the butterfly flap, and the valve flap rotates around the fixed axis (without rocker).
7-11 Line check valve is a check valve in which the disc slides along the center line of the valve body. The valve is small in size, light in weight, and has good processability, but the flow resistance coefficient is slightly lower than that of the swing check valve. Big
7-12 No-load running check valve This is a special purpose check valve, which is used for the outlet of the boiler feed pump to prevent the backflow of the medium and play the role of emptying.
7-13 Dashpot check valve A buffer device is set on the swing check valve or lift check valve to form a slow closing check valve, which can effectively prevent water hammer
7-14 Diaphragm type check valve Diaphragm type check valve This valve is a new structure of check valve. Although its use is limited by temperature and pressure, it can prevent water hammer pressure than the traditional swing type. Check valve is much smaller
7-15 Tapered diaphragm type check valve The valve is mounted between the two flanges of the pipeline, and its closing speed is extremely fast
7-16 Annular woven diaphragm type check valve The valve adopts a corrugated annular rubber diaphragm, and the closing speed is extremely fast, but its use range is usually limited by pressure difference (△p<1MPa) and temperature (t <70°C) limit
7-17 Ball check valve Ball check valve Under the action of the medium, the rubber ball (single ball and multi-ball) rolls back and forth in a short stroke in the direction of the center line of the valve body in the ball cover to realize its opening and closing action
8-01 Safety valve An automatic valve, it does not rely on any external force, but uses the force of the medium itself to discharge a rated amount of fluid to prevent the pressure in the system from exceeding a predetermined safety value. When the pressure returns to normal, the valve Close again and stop the media from continuing to flow
8-02 Weighted safety valve is a check valve that uses a lever and a heavy hammer to balance the pressure of the disc. This structure can only be used on fixed equipment, and the weight of the heavy hammer should generally not exceed 60kg
8-03 Spring type safety valve is a safety valve that uses the force of the compression spring to balance the pressure of the disc and seal it. The spring force of this type of safety valve should generally not exceed 20000N
8-04 Pulse type safety valve This valve is designed with the main valve and the auxiliary valve together, and the main valve is driven by the pulse action of the auxiliary valve. This structure is usually used in large-diameter, large-displacement and high-pressure systems.
8-05 Low lift safety valve is a safety valve whose disc opening height is 1/40~1/20 of the throat diameter of the valve seat
8-06 Fall lift safety valve A safety valve with a disc opening height equal to or greater than 1/4 of the throat diameter of the valve seat
8-07 All sealed bonnet tgpe safety valve When the valve is opened and discharged, the medium will not leak to the outside, but all discharged through the discharge pipe. This structure is suitable for flammable, explosive and toxic media
8-08 Half sealed bonnet type safety valve When the valve is opened and discharged, part of the medium is discharged through the discharge pipe, while the other part leaks out from the joint between the valve cover and the valve stem. This structure is suitable for general steam and non-polluting medium to the environment
8-09 Open type safety valve Exposed type safety valve When opening and discharging, the medium is directly discharged from the top of the valve disc. This safety valve is suitable for occasions where there is no requirement for environmental pollution
8-10 Direct loaded safdty valve Direct loaded safdty valve A safety valve that directly uses a mechanical load such as a heavy hammer, a lever heavy hammer or a spring to overcome the force generated by the medium pressure under the valve disc
8-11 Assisted safety valve with auxiliary device The safety valve can be opened under a lower than normal opening pressure by means of a power auxiliary device. Even if the auxiliary device fails, such a valve should still meet the requirements of the standard
8-12 Supplementary loaded safety valve The safety valve always maintains an additional force to enhance the sealing before the pressure at its inlet reaches the opening pressure. The additional force (supplementary load) can be provided by external energy, and in the safety When the valve reaches the opening pressure, it should be released reliably. Its size should be set so that, assuming that the additional force is not released, the safety valve can still reach the rated displacement under the premise that the inlet pressure does not exceed the percentage of the opening pressure specified by the national regulations
8-13 Pilot operated safety valve A safety valve driven or controlled by a pilot valve. The pilot valve itself should be a direct load safety valve that meets the requirements of the standard
8-14 Lever and weight loaded safety valve Lever and weight loaded safety valve
8-15 Bellows seal balance safety valve Bellows seal balance safety valve A safety valve that uses bellows to balance back pressure to keep the opening pressure constant
8-16 Duplex safety valve is a safety valve group that connects two spring-type safety valves in parallel and has the same inlet.
9-01 Pressure reducing valve is a valve that reduces the pressure of the medium through the throttling of the opening and closing parts, and uses the energy of the medium itself to make the pressure behind the valve automatically meet the predetermined requirements.
9-02 Piston reducing vakve Piston reducing vakve A pressure reducing valve that uses a piston as a sensing element to drive the disc movement
9-03 Diaphragm reducing valve Diaphragm reducing valve is a pressure reducing valve that uses a thin film as a sensing element to drive the movement of the valve disc
9-04 Air bag type reducing valve is a pressure reducing valve that balances the pressure of the valve by relying on the pressure of the medium after the valve entering the air bag
9-05 Spring diaphragm reducing valve Spring diaphragm reducing valve A pressure reducing valve that uses a spring and a diaphragm as a sensing element to drive the up and down movement of the valve disc
9-06 Bellows seal reducing valve Bellows seal reducing valve A pressure reducing valve that uses a bellows mechanism to drive the lifting movement of the valve disc
9-07 Lever reducing calve A pressure reducing valve that uses a lever mechanism to drive the lifting movement of the disc
9-08 Fixed pressure reducing valve
9-09 Proportionging pressure reducing valve A pressure reducing valve that maintains a certain ratio between the outlet pressure and the inlet pressure or a certain reference pressure
9-10 Fixed differential reducing valve A pressure reducing valve that maintains a certain pressure difference between the outlet pressure and the inlet pressure or a reference pressure
9-11 Direct-acting reducing valve Direct-acting reducing valve A pressure reducing valve that directly controls the movement of the valve disc by using the change of the outlet pressure
9-12 Pilot-operated reducing valve It consists of a main valve and a pilot valve. The pressure change at the outlet is amplified to control the action of the main valve.
9-13 Main valve of pilot-operated pressure reducing valve In the pilot-operated pressure reducing valve, the valve that is controlled by the pilot valve to regulate the circulating medium
9-14 Pilot valve of the pilot type pressure reducing valve In the pilot type pressure reducing valve, the front valve that controls the action of the main valve
9-15 Direct accing reducing valve Direct accing reducing valve A pressure reducing valve in which the force of the inlet medium on the disc is consistent with the rising direction of the disc
9-16 Reverse acting reducing valve Reverse acting reducing valve A pressure reducing valve in which the force of the inlet medium on the valve disc is opposite to the rising direction of the raft disc
9-17 Balanced reducing valve Unloading pressure reducing valve A pressure reducing valve in which the force of the inlet medium on the valve disc is close to or balanced
10-01 Steam trap A valve that automatically drains condensate and prevents steam leakage
10-02 Mechanical steam trap Mechanical steam trap It is a trap that drives the opening and closing parts by the change of the condensed water level to complete the steam blocking and drainage action.
10-03 Ball float steam trap Ball float steam trap is a trap that drives the action of the opening and closing parts by using the hollow ball floating in the condensed water
10-04 Free-ball float steam trap The switch action of the opening and closing parts (free float ball) is caused by the change of the liquid level of the condensed water in the shell. The valve can discharge saturated water and continuously discharge condensate water
10-05 Lever-ball float steam trap Lever-ball float steam trap The switch action of the opening and closing parts (lever float ball) is caused by the change of the liquid level of the condensed water in the shell. The lever mechanism of the valve is characterized by expanding the buoyancy, so , can be used for large displacement occasions
10-06 Free-semi-ball float steam trap adopts a free-moving hemispherical float (free semi-floating ball), the float itself has the function of a valve disc, and there is no hinge. Lever and connecting rod The mechanism is the structure that can open and close the valve port, and it is also a steam trap with a simpler structure.
10-07 Inverted bucket steam trap The opening of the float is downward, and the change of the level of condensed water in the float causes the switching action of the opening and closing parts. Most of the valves do not directly fix the valve disc on the float, but a lever mechanism is used to expand the buoyancy
10-08 Open bucket force steam trap Open bucket force steam trap This valve is also called floating bucket steam trap.
10-09 Hot-statical force steam trap It is a steam trap that drives the opening and closing parts by the change of condensate temperature to complete the steam blocking and drainage action.
10-10 Bellows seal steam trap The valve is in a serpentine tube container, that is, a low boiling point is sealed in the bellows. The volatile liquid is used as a temperature sensing element. The valve disc is fixed on the bellows, and the With the temperature change, the bellows expands and contracts and opens and closes the trap
10-11 Membrane-box steam trap The valve is a steam pressure type, which is driven by the unbalance between the pressure of the condensed water and the steam pressure of the volatile liquid in the deformable element to drive the action of the opening and closing parts. The valve will not produce air lock
10-12 Bimetal elements steam trap Bimetal elements steam trap is a steam trap that uses bimetal elements to deform when heated to drive the opening and closing parts. The valve will not be blocked.
10-13 Hot-motive force steam trap It is a trap that drives the opening and closing parts to complete the steam blocking and drainage action by the change of the dynamic characteristics of the condensate.
10-14 Dise steam trap is a steam trap that uses the different thermal properties of steam and condensed water, as well as the changes in static pressure and dynamic pressure, to make the valve plate move.
10-15 Impulse steam trap Impulse steam trap utilizes the secondary evaporation of steam in the two-stage throttling, resulting in the pressure change of steam and condensate, and the steam trap that makes the opening and closing parts act.
10-16 Labyrinth or orifice steam trap Orifice steam trap This type of steam trap controls the discharge of condensate by the orifice, and changes the hot condensate to reduce the outflow of steam
11-01 Diaphragm valve The opening and closing member (diaphragm) is driven by the valve stem, moves up and down along the axis of the valve stem, and separates the action mechanism from the medium.
11-02 Globe diaphragm valve Diaphragm valve with valve body similar in shape to globe valve body
11-03 Weir diaphragm valve is a diaphragm valve in which a roof structure and a diaphragm form a sealing pair in the flow channel of the valve body
11-04 Wedge diaphragm valve Wedge diaphragm valve A diaphragm valve with a similar shape to the single gate of the wedge gate valve
12-01 Multipurpose valve Multipurpose valve
12-02 Serew-down stop check valve It is a valve that can play two functions of stop and check. The valve is suitable for occasions where the installation position is limited.
12-03 Serew-down stop check and throttle valve is a three-purpose valve that can play cut-off, check and throttle functions. This valve is widely used in oil wells and water injection devices
12-04 Serew-down stop check and safety valve Serew-down stop check and safety valve A three-purpose valve with cut-off, check and safety functions
12-05 Check-ball valve is a dual-purpose valve that can be used as check and ball valve
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