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Pneumatic double L welded reversing valve

    Pneumatic double L welded reversing valve

    The Pneumatic Double L Welded Reversing Valve is a high-performance valve designed for directional flow control in pneumatic systems. Built with a double L welded design, this valve provides reliable and precise flow direction switching, making it ideal for high-pressure and high-temperature applications in industries such as chemical processing, water treatment, and automated machinery. The pneumatic actuation ensures quick response times and energy-efficient operation, while the welded construction enhances durability, offering long-lasting service life and minimal leakage. Whether used for...
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The pneumatic double L-shaped welded reversing valve is a more advanced pneumatic control element, which adds a welded interface to the L-shaped reversing valve, which makes the valve body stronger, better sealing performance, and also convenient for installation and connection.


The double L-type welded reversing valve is connected by welding, making the connection tighter, more reliable, and able to withstand higher pressures and temperatures. In addition, the double L-type welded reversing valve also has better flow control performance, which can better regulate the flow and speed of gas.


The advantage of the double L welding reverse valve lies in its high reliability and long life, making it suitable for various pneumatic control systems that require high precision and reliability. It is particularly suitable for use in occasions that require frequent switching or high requirements for sealing performance, such as chemical, pharmaceutical, food, printing, packaging, machinery, and other fields.


It is a commonly used pneumatic control element, mainly used to control the direction, flow and speed of gas. Its working principle is to use the energy of compressed air to push the spool in the valve body, so that it switches under the action of gas, so as to achieve gas direction control.


The pneumatic double L welded reverse valve is an efficient and reliable pneumatic control element that can meet various complex pneumatic control needs.


Model representation method
WH-600—Q1—C1—F—16—P—25—D1—B—W2—B2—L
>1. Weiheng brand>2. Drive mode>3. Valve body type>4. Connection method>5. Sealing material>6. Nominal pressure>7. Valve body material>8. Nominal diameter>9. Control mode>10. Explosion-proof level—20~150℃>12. Accessory options>13. Three flows
1~7 mandatory options, 8~13 optional


1 codename
5 codenameSealed material10 codeExplosion-proof rating
WHWeiheng brandFPTFEBExdIl BT4 Gb explosionproof and explosion-proof type


PPLPara-polyphenyleneBZExdllCT5 Gb explosion-proof and explosion-proof type
2 codenameDrive modeHMetal hard sealBCExdll CT6 Gb explosionproof and explosion-proof type
600Pneumatic actuator seriesYcemented carbideBMExmbllT4 Gb cast explosion-proof type
900Electric actuator systemX1Ding Qing rubber NBRBAExiall CT6Ga intrinsically safe and explosion-proof
2001Column plastic actuator angle seat valve seriesX2Natural rubber NR

2002Stainless steel actuator angle seat valve seriesX3EPDM11 codenamesMedium temperature


X4Viton rubber FPMW1-20-80C
3 codenameBody typeX5Food grade silicone rubber SIW2-20-150C
Q1Two-way valveF46Fully lined polyperfluoroethylene FEPW3-20-250C
Q2Three-way valvePFAFully lined with soluble PTFE PFAW4-29-425C
Q3Four-way valveF4Fully lined PTFEW5-29-650C
Q4Stationary ball valveNnylonW6-196-60C
Q5V-ballTCLined ceramic............
Q6Low profile ball valveJRubber liningIt has a special temperature that can be designed and manufactured according to customer requirements
Q7Sanitary grade ball valvesPEEKPolyether ether ketone

Q8Plastic ball valvesWWhen the ring12 codenamesAccessory selection
Q9High vacuum ball valve............B12-position, 3-way solenoid valve
Q10Fluorine ball valve in the whole villageOther special sealing materials can be designed and manufactured according to customer requirementsB22-position 5-way solenoid valve
Q11Cryogenic ball valves

B32-position 3-way explosion-proof solenoid valve
Q12Insulated ball valve6 codenameNominal pressureB42-position 5-way explosion-proof solenoid valve
Q13Eccentric hemispherical valve............B5Filter pressure reducing valve
Q14Tank bottom valve

B6Limit switch
Q15Ceramic ball valves7 codenameBody materialB7Explosion-proof limit switch
D1Centerline soft-sealed butterfly valveQDuctile iron HT200B8Hand manipulation mechanism
D23. Eccentric butterfly valveCcarbon steelB9Locator
D3Sanitary butterfly valvePStainless steel 304............
D4Plastic butterfly valveRStainless steel 316

D5Ventilation butterfly valvePLStainless steel 304L13 codenamesThree flows
D6Fluorine butterfly valve in the whole villageRLStainless steel 316LLTee L-type BC switching
D7High vacuum butterfly valveUPVC UPVCT1Tee T-type C-port switch
D8Powder butterfly valvePPReinforced polypropylene RPPT2Tee T-type AB switching
Z1Gate valveLAluminum alloyT3Tee T-type AC switching
Z2Knife gate valve............T4Tee T-type B-port switch
J1Globe valveOther special valve body materials can be designed and manufactured according to customer requirements

J2Bellows cut stop valve



J3Angle seat valve8 codenameIt is called the path

F1Upward expansion discharge valve............

F2Downward discharge valve



Other special valve body materials can be designed and manufactured according to customer requirements9 codeControl mode



ZStandard switch type

4 codenamesConnectionT1Integral switching type

C1Female threadT2Overall adjustment

C2By orderT3RS485 bus type

C3Male threadD1Double acting

C4flangeD2Double-acting adjustment type

C5KF vacuum chuckE1Uni-acting normally closed

C6weldE2Single-acting normally closed regulation type

C7Pair clipE3Single-acting and always open

C8ClampsE4Single-acting normally open adjustment type

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