Hardware market mainstream Valve types and definitions:
1-01 Automatic valve Valve that depends on the ability of the medium to act on its own. 1-02 Actuated valve Actuated valve 2-01 Gate valve, slide valve The valve 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 gate valve Gate valve on both sides of the gate parallel to each other Gate valve 2-03 Wedge gate valve The two sides of the gate are wedge-shaped and the sealing surfaces are wedge-shaped. The outer screw stem rising through handwheel type gate valve. The stem moves up and down. The gate of the valve outside the body cavity is 2-05. Nonrising stem type gate valve valve stem for rotary motion, its transmission thread in the body cavity inside the gate valve 2-06 quick open and close gate valve Quick open-and-close gate valve valve stem for both rotation and lift movement of the gate valve 2-07 contraction Gate valve: The diameter of the passage in the valve body is different. The valve seat sealing surface is smaller than the diameter of the flange connection gate valve 2-08 Valve Gate gate valve This type of gate valve has points with diversion holes and no diversion holes. The flat gate valve with diversion hole can clear the pipe through the ball, and the flat gate valve without diversion hole can only be used as the opening and closing device on the pipeline. 3-01 Butterfly valve Open/close valve (disc plate) Valve that rotates around a fixed axis 3-02 Center line-type butterfly valve The center of rotation of the butterfly plate (namely, the center of the valve shaft) is located on the center line of the valve body and the butterfly valve on the sealing section of the butterfly plate. 3-03 Single eccentric butterfly valve Single-eccentric center butterfly vale Butterfly The center of rotation of the plate (namely the center of the valve shaft) is located on the centerline of the valve body and forms a butterfly valve with a size offset with the butterfly plate sealing surface. 3-04 Double eccentric butterfly valve Double-eccentric center butterfly valve The center of the shaft forms a size offset with the disc seal cross-section and forms a butterfly valve with another size offset with the centerline of the valve body. 3-05 Three-eccentric center butterfly valve Three-eccentric center butterfly valve ) Form a size offset with the butterfly plate sealing surface and form another size offset with the centerline of the valve body; the centerline of the valve body sealing surface and the centerline of the valve seat (ie, the valve body centerline) An angularly-biased valve 4-01 is a rotary valve. Rotary valve A valve for relative rotation of an opening/closing member along a valve seat seal surface axis. 4-02 Ball valve Ball valve The opening/closing member (ball) rotates about an axis perpendicular to the passage. Valve 4-03 Float ball valve Ball ball valve without fixed shaft 4-04 Fixed ball valve Fixed ball valve Ball valve with fixed shaft 4-05 Flexible ball valve Flexible ball valve Ball valve with ball screw on ball 4-06 Plug Valves Cock,plug Valves that rotate around its axis 4-07 Valves with tight plugs Clampyte plug valve Plugs without packing, Seals on plugs and plug sealing surfaces Relies on tightening the nuts under the plug To achieve the plug valve 4-08 packing plug valve Cland packing plug valve Sealed plug valve 4-09 self-sealing plug valve Self-sealing plug valve Plug and plug body seals rely mainly on the pressure of the media to achieve Plug Valves 4-10 Lubricated Plug Valves Lubricated Plug Valve Grease Sealed Plug Valves 4-11 Spindle Valves Cock,plug Opening and Closing Parts (Cylindrical Stoppers) Valves 5-01 Revolving Around Its Axis Baffler valve Baffler valve (baffle) in the valve seat sealing surface to the valve seat sealing surface for relative movement, but does not pass through the valve seat sealing surface of the valve 5-02 stop valve Globe valve, stop valve open and close The valve (valve) is actuated by the valve stem and moves up and down along the axis of the valve seat (seal face). 5-03 Upper thread stem stop valve Stem valve outside the housing Stop valve 5-04 Lower threaded stem shut-off valve Inside screw stem stop valve Stem valve threaded in the housing 5-05 Straight-through shut-off valve Globe valve Media inlet and outlet Both passages in the same direction, 180° stop valve 5-06 Angled globe valves Angle pattern globe valve Media entry and exit Two-way valves with 90° shutoff valve 5-07 Triangular globe valve Three way stop valve Globe valve with 3 channels 5-08 DC globe valve Oblique type globe valve The valve and the channel into a certain angle of the cut-off valve 5-09 plunger type globe valve Plunger type globe valve is a conventional stop valve deformation. The valve and valve seat are designed according to the principle of the plunger; the valve flap is designed as a plunger, the valve seat is designed as a collar, and the plunger and the collar are used to realize the sealing. 5-10 needle-shaped globe valve The size of the seat hole is smaller than the nominal diameter. 6-01 Throttle Valve The Throttle valve changes the cross-sectional area of ​​the passage through the opening/closing member (valve) to regulate the flow rate. Pressure valves 6-02 Trench type disc throttle valve Trench type disc throttle valve Commonly used in the expansion device of the cryogenic device 6-03 Window type valve flap valve Applicable to the larger nominal diameter Throttle valve 6-04 Plug disc throttle valve Suitable for medium. Small-diameter throttle valve 7-01 Check valve, Non-reture valve Opening and closing parts (valve) Reliance on the media force to automatically block the medium counterflow valve 7-02 Swing check valve Check valve Valve check valve for rotation around the fixed axis in the body cavity 7-03 Single flap swing check valve Single disc swing check valve Single flap swing check valve 7-04 Multiple swing check Valve Multi-disc swing check valve Swing check valve with more than two flaps 7-05 Lift check valve Lift valve check valve 7-06 Check valve vertical to the valve seat hole axis for lifting movement 7-06 Valve Foot valve Installed in the suction pipe end of the Pump to ensure the check valve filled with water in the suction pipe 7-07 Spring-loaded lift check valve This valve can not only reduce the water hammer pressure, but also smooth the flow channel. ,The flow resistance is very small. 7-08 Spring load Annular valve lift check valve Spring-loaded annular disc lift check valve Compared with the conventional structure of lift check valve, the valve stroke is smaller, in addition to the spring load. The role of making it close quickly, therefore, is more conducive to reducing water hammer Force 7-09 multi-annulus lift check valve Multi-annulus lift check valve This valve has the smallest flap stroke, so it closes more quickly 7-10 Butterfly swing check valve Shape and butterfly Similarly, a check valve that rotates around a fixed shaft (without a rocker) 7-11 Pilot check valve Line check valve Check valve that slides along the centerline of the valve body. The valve is small in size, light in weight and good in processability, but its flow resistance coefficient is slightly larger than that of the swing check valve. 7-12 No-load running check valve This is a special purpose check valve. , Used for the outlet of the boiler Feed Pump to prevent the back flow of medium and the role of empty row 7-13 Dashpot check valve Set the buffer device on the swing check valve or lift check valve to form slow closing Check valve, this check valve can effectively prevent water hammer 7-14 Diaphragm type check valve This valve is a new structure of the check valve, although its use is subject to temperature and pressure The limit, but its prevention of water hammer pressure is much smaller than the traditional swing check valve 7-15 taper diaphragm check valve Tapered diaphragm type check valve The valve check clip is installed between two flanges of the pipeline, Extremely fast closing speed 7-16 Annular woven diaphragm type check valve Annular woven diaphragm type check valve This valve uses a pleated ring-shaped rubber diaphragm, and its closing speed is extremely fast, but its application range is usually subject to pressure difference (△p<1MPa) And temperature (t<70°C) limit 7-17 ball Ball check valve Rubber ball (single ball and multiple ball) under the action of the medium, in the ball cover in the direction of the center line of the valve body for a short round trip back and forth to achieve its opening and closing action 8-01 safety valve An automatic valve that uses the force of the media itself to discharge a nominal amount of fluid without any external force to prevent the system pressure from exceeding a predetermined safe value. When the pressure returns to normal, the valve closes again and prevents the media from continuing. Outflow 8-02 Weighted safety valve Check valve for balancing valve pressure with lever and weight. This structure can only be used on fixed equipment, the weight of which should not exceed 60kg
8-03 Spring type safety valve A type of safety valve that uses the force of a compression spring to balance the pressure of the disc and seal it. The spring force of such safety valve should not exceed 20,000N
8-04 Pulse type safety valve This type of valve is designed for the main valve and the auxiliary valve to actuate the main valve through the pulse action of the auxiliary valve. This structure is usually used for large diameter. Discharge volume and high pressure system 8-05 micro lift safety valve Low lift safety valve Valve disc opening height is 1/40 to 1/20 of the valve throat throat safety valve 8-06 full safety valve Fall lift safety valve Valve opening height is equal to or greater than 1/4 of the valve seat throat safety valve 8-07 totally sealed safety valve All sealed bonnet tgpe safety valve When opening the discharge, the medium will not leak to the outside, but all discharged through the drain pipe. . This structure is suitable for flammability. Explosive. Toxic Medium 8-08 Half sealed bonnet type safety valve When the discharge is opened, part of the medium is drained through the drain pipe, and the other part leaks out from the fitting of the bonnet and stem. This structure is suitable for general steam and non-environmental pollution-free medium 8-09 open-type safety valve Exposed type safety valve When discharging, the medium is directly discharged from the top of the valve flap. This safety valve is suitable for no environmental pollution. Occasion 8-10 direct-load safety valve Direct loaded safdty valve Used directly for mechanical loads such as weights. A lever or a spring to overcome the force exerted by the medium pressure under the valve flap Safety valve 8-11 Auxiliary safety valve Assisted safety valve The safety valve can be operated under a normal opening pressure by means of a power assist device. Open. Even if the auxiliary device fails, such valves should still meet the requirements of the standard.
1-01 Automatic valve Valve that depends on the ability of the medium to act on its own. 1-02 Actuated valve Actuated valve 2-01 Gate valve, slide valve The valve 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 gate valve Gate valve on both sides of the gate parallel to each other Gate valve 2-03 Wedge gate valve The two sides of the gate are wedge-shaped and the sealing surfaces are wedge-shaped. The outer screw stem rising through handwheel type gate valve. The stem moves up and down. The gate of the valve outside the body cavity is 2-05. Nonrising stem type gate valve valve stem for rotary motion, its transmission thread in the body cavity inside the gate valve 2-06 quick open and close gate valve Quick open-and-close gate valve valve stem for both rotation and lift movement of the gate valve 2-07 contraction Gate valve: The diameter of the passage in the valve body is different. The valve seat sealing surface is smaller than the diameter of the flange connection gate valve 2-08 Valve Gate gate valve This type of gate valve has points with diversion holes and no diversion holes. The flat gate valve with diversion hole can clear the pipe through the ball, and the flat gate valve without diversion hole can only be used as the opening and closing device on the pipeline. 3-01 Butterfly valve Open/close valve (disc plate) Valve that rotates around a fixed axis 3-02 Center line-type butterfly valve The center of rotation of the butterfly plate (namely, the center of the valve shaft) is located on the center line of the valve body and the butterfly valve on the sealing section of the butterfly plate. 3-03 Single eccentric butterfly valve Single-eccentric center butterfly vale Butterfly The center of rotation of the plate (namely the center of the valve shaft) is located on the centerline of the valve body and forms a butterfly valve with a size offset with the butterfly plate sealing surface. 3-04 Double eccentric butterfly valve Double-eccentric center butterfly valve The center of the shaft forms a size offset with the disc seal cross-section and forms a butterfly valve with another size offset with the centerline of the valve body. 3-05 Three-eccentric center butterfly valve Three-eccentric center butterfly valve ) Form a size offset with the butterfly plate sealing surface and form another size offset with the centerline of the valve body; the centerline of the valve body sealing surface and the centerline of the valve seat (ie, the valve body centerline) An angularly-biased valve 4-01 is a rotary valve. Rotary valve A valve for relative rotation of an opening/closing member along a valve seat seal surface axis. 4-02 Ball valve Ball valve The opening/closing member (ball) rotates about an axis perpendicular to the passage. Valve 4-03 Float ball valve Ball ball valve without fixed shaft 4-04 Fixed ball valve Fixed ball valve Ball valve with fixed shaft 4-05 Flexible ball valve Flexible ball valve Ball valve with ball screw on ball 4-06 Plug Valves Cock,plug Valves that rotate around its axis 4-07 Valves with tight plugs Clampyte plug valve Plugs without packing, Seals on plugs and plug sealing surfaces Relies on tightening the nuts under the plug To achieve the plug valve 4-08 packing plug valve Cland packing plug valve Sealed plug valve 4-09 self-sealing plug valve Self-sealing plug valve Plug and plug body seals rely mainly on the pressure of the media to achieve Plug Valves 4-10 Lubricated Plug Valves Lubricated Plug Valve Grease Sealed Plug Valves 4-11 Spindle Valves Cock,plug Opening and Closing Parts (Cylindrical Stoppers) Valves 5-01 Revolving Around Its Axis Baffler valve Baffler valve (baffle) in the valve seat sealing surface to the valve seat sealing surface for relative movement, but does not pass through the valve seat sealing surface of the valve 5-02 stop valve Globe valve, stop valve open and close The valve (valve) is actuated by the valve stem and moves up and down along the axis of the valve seat (seal face). 5-03 Upper thread stem stop valve Stem valve outside the housing Stop valve 5-04 Lower threaded stem shut-off valve Inside screw stem stop valve Stem valve threaded in the housing 5-05 Straight-through shut-off valve Globe valve Media inlet and outlet Both passages in the same direction, 180° stop valve 5-06 Angled globe valves Angle pattern globe valve Media entry and exit Two-way valves with 90° shutoff valve 5-07 Triangular globe valve Three way stop valve Globe valve with 3 channels 5-08 DC globe valve Oblique type globe valve The valve and the channel into a certain angle of the cut-off valve 5-09 plunger type globe valve Plunger type globe valve is a conventional stop valve deformation. The valve and valve seat are designed according to the principle of the plunger; the valve flap is designed as a plunger, the valve seat is designed as a collar, and the plunger and the collar are used to realize the sealing. 5-10 needle-shaped globe valve The size of the seat hole is smaller than the nominal diameter. 6-01 Throttle Valve The Throttle valve changes the cross-sectional area of ​​the passage through the opening/closing member (valve) to regulate the flow rate. Pressure valves 6-02 Trench type disc throttle valve Trench type disc throttle valve Commonly used in the expansion device of the cryogenic device 6-03 Window type valve flap valve Applicable to the larger nominal diameter Throttle valve 6-04 Plug disc throttle valve Suitable for medium. Small-diameter throttle valve 7-01 Check valve, Non-reture valve Opening and closing parts (valve) Reliance on the media force to automatically block the medium counterflow valve 7-02 Swing check valve Check valve Valve check valve for rotation around the fixed axis in the body cavity 7-03 Single flap swing check valve Single disc swing check valve Single flap swing check valve 7-04 Multiple swing check Valve Multi-disc swing check valve Swing check valve with more than two flaps 7-05 Lift check valve Lift valve check valve 7-06 Check valve vertical to the valve seat hole axis for lifting movement 7-06 Valve Foot valve Installed in the suction pipe end of the Pump to ensure the check valve filled with water in the suction pipe 7-07 Spring-loaded lift check valve This valve can not only reduce the water hammer pressure, but also smooth the flow channel. ,The flow resistance is very small. 7-08 Spring load Annular valve lift check valve Spring-loaded annular disc lift check valve Compared with the conventional structure of lift check valve, the valve stroke is smaller, in addition to the spring load. The role of making it close quickly, therefore, is more conducive to reducing water hammer Force 7-09 multi-annulus lift check valve Multi-annulus lift check valve This valve has the smallest flap stroke, so it closes more quickly 7-10 Butterfly swing check valve Shape and butterfly Similarly, a check valve that rotates around a fixed shaft (without a rocker) 7-11 Pilot check valve Line check valve Check valve that slides along the centerline of the valve body. The valve is small in size, light in weight and good in processability, but its flow resistance coefficient is slightly larger than that of the swing check valve. 7-12 No-load running check valve This is a special purpose check valve. , Used for the outlet of the boiler Feed Pump to prevent the back flow of medium and the role of empty row 7-13 Dashpot check valve Set the buffer device on the swing check valve or lift check valve to form slow closing Check valve, this check valve can effectively prevent water hammer 7-14 Diaphragm type check valve This valve is a new structure of the check valve, although its use is subject to temperature and pressure The limit, but its prevention of water hammer pressure is much smaller than the traditional swing check valve 7-15 taper diaphragm check valve Tapered diaphragm type check valve The valve check clip is installed between two flanges of the pipeline, Extremely fast closing speed 7-16 Annular woven diaphragm type check valve Annular woven diaphragm type check valve This valve uses a pleated ring-shaped rubber diaphragm, and its closing speed is extremely fast, but its application range is usually subject to pressure difference (△p<1MPa) And temperature (t<70°C) limit 7-17 ball Ball check valve Rubber ball (single ball and multiple ball) under the action of the medium, in the ball cover in the direction of the center line of the valve body for a short round trip back and forth to achieve its opening and closing action 8-01 safety valve An automatic valve that uses the force of the media itself to discharge a nominal amount of fluid without any external force to prevent the system pressure from exceeding a predetermined safe value. When the pressure returns to normal, the valve closes again and prevents the media from continuing. Outflow 8-02 Weighted safety valve Check valve for balancing valve pressure with lever and weight. This structure can only be used on fixed equipment, the weight of which should not exceed 60kg
8-03 Spring type safety valve A type of safety valve that uses the force of a compression spring to balance the pressure of the disc and seal it. The spring force of such safety valve should not exceed 20,000N
8-04 Pulse type safety valve This type of valve is designed for the main valve and the auxiliary valve to actuate the main valve through the pulse action of the auxiliary valve. This structure is usually used for large diameter. Discharge volume and high pressure system 8-05 micro lift safety valve Low lift safety valve Valve disc opening height is 1/40 to 1/20 of the valve throat throat safety valve 8-06 full safety valve Fall lift safety valve Valve opening height is equal to or greater than 1/4 of the valve seat throat safety valve 8-07 totally sealed safety valve All sealed bonnet tgpe safety valve When opening the discharge, the medium will not leak to the outside, but all discharged through the drain pipe. . This structure is suitable for flammability. Explosive. Toxic Medium 8-08 Half sealed bonnet type safety valve When the discharge is opened, part of the medium is drained through the drain pipe, and the other part leaks out from the fitting of the bonnet and stem. This structure is suitable for general steam and non-environmental pollution-free medium 8-09 open-type safety valve Exposed type safety valve When discharging, the medium is directly discharged from the top of the valve flap. This safety valve is suitable for no environmental pollution. Occasion 8-10 direct-load safety valve Direct loaded safdty valve Used directly for mechanical loads such as weights. A lever or a spring to overcome the force exerted by the medium pressure under the valve flap Safety valve 8-11 Auxiliary safety valve Assisted safety valve The safety valve can be operated under a normal opening pressure by means of a power assist device. Open. Even if the auxiliary device fails, such valves should still meet the requirements of the standard.
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