Compound Exhaust Valve
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Compound Exhaust Valve

Compound exhaust valve is a kind of floating ball exhaust valve made by Bernoulli's theory, which can keep fully open under the air flow. When the solid water column rises, the floating ball can float immediately and close the exhaust port tightly. Compound exhaust valve adopts a specific diameter of floating ball, so that the aerodynamic force generated by it can keep the floating ball open when the air flows through, and the buoyancy generated when the solid water column rises can make it float again. With a cone at an appropriate angle at the inlet, the exhaust port will not be blocked no matter how high the air pressure or the air velocity.

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Product Description

1.Introduction of Compound Exhaust Valve

Compound exhaust valve is a kind of floating ball exhaust valve made by Bernoulli's theory, which can keep fully open under the air flow. When the solid water column rises, the floating ball can float immediately and close the exhaust port tightly. Compound exhaust valve adopts a specific diameter of floating ball, so that the aerodynamic force generated by it can keep the floating ball open when the air flows through, and the buoyancy generated when the solid water column rises can make it float again. With a cone at an appropriate angle at the inlet, the exhaust port will not be blocked no matter how high the air pressure or the air velocity.

Compound Exhaust Valve


2. Specific parameters of Compound Exhaust Valve

Type of Valve Quick Exhaust Valve
DN DN25~DN400
PN(MPa) 0.6~4Mpa
Design Temperature Range 0℃~80℃
Connection type: Flanged

Spare Parts Material
Body Cover Forged steel, Cast steel, Stainless Steel,
Stem Stainless steel, bronze aluminum
Plug head Carbon steel, stainless steel
Fload Stainless steel


3. The use of Compound Exhaust Valve

Compound exhaust valve is installed in the place where high-speed air intake and exhaust are possible. When water is filled, the air in the pipeline is discharged at high speed. When the pipeline is emptied, the air is inhaled to keep the drainage unobstructed. When the pipeline is working normally, the air precipitated can be continuously discharged. When it is possible to produce water hammer, air will enter automatically and negative pressure will be generated on the wall to prevent or slow down the harm of water hammer.

Compound Exhaust Valve


4.Characteristics of Compound Exhaust Valve 

1) Compound exhaust valve can prevent the floating ball from being blown up in the high-speed air flow and blocking the exhaust port, resulting in the exhaust valve failure.
2) In case of power failure or pump shutdown during the operation of the pipeline, the negative pressure of the pipeline in time will cause vibration or breakage of the pipeline. Compound exhaust valve will quickly suck air into the pipeline to prevent vibration or breakage of the pipeline.
Compound Exhaust Valve


5. Packaging and Delivery


6. FAQ

1. Can i have a sample order for valve ?
A: Yes, we welcome sample order to test and check the quality, Mixed sample are accepted.
2. Do you have any MOQ limit for valve order ?
A: Low MOQ, 1 PC for sample checking is avaible.
3. Could you offer OEM service ?
A: Yes, OEM is availble.
4. How about the payment ?
A: We normally accept 30% deposit, and balance will be paid before shipping. L7C is OK
5. Whafs the delivery time of your butterfly valves?
A: For most of the sizes,DN50-DN600,we have stock of valve parts,it*s possible to deliver in 1-3 weeks,to nearest seaport Tianjin.
6. Whafs the warranty of your products?
A:We normally offer 12 months of warranty in service or 18 months since shipping date.
7. What is your products standardization?
A: GB/T12238-2008, JBfT 8527-1997, API 609,EN 593-1998, DIN 85003-3-1997


7.Contact Information

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