| Brand:AULANS | Product Name: pneumatic ventilation butterfly valve |
| Connection method: flange | Material: ductile iron / WCB / 304.316l stainless steel |
| Nominal pressure: 0.25mpa/0.6mpa | Driving mode: pneumatic (manual and electric optional) |
| Applicable medium: gas, dusty gas, flue gas, etc. |
| Multi blade (louver type) | Manual | Manual | Pneumatic | Electric |
| Circular ventilation butterfly valve | DN50-DN3200 can be designed and processed | |||
| Circular ventilation butterfly valve | DN100*100-DN4000*4000 can be designed and processed | |||
| Manual opening and closing mode | Manual handle | Manual turbine | ||
| Pneumatic opening mode | GT pneumatic head | AT pneumatic head | AW pneumatic head | |
| Electric opening mode | Electric switch type | Electrically adjustable 4-20mA analog signal | ||
| Blade type | Single sheet | Multi blade (louver type) |
Q1. Can I have a sample order for valve?
A: Yes, welcome sample order to test and check quality.Mixed samples are acceptable.
Q2. How do you ship the goods and how long does it take to arrive?
A: We usually ship by sea. It usually takes 15-20 days to rline shipping also optional.
Q3. How to proceed an order for valve?
A: Firstly let us know your requirements or application. Secondly We quote according to your requirements or our suggestions. Thirdly customer confirms the samples and places deposit for formal order. Fourthly We arrange the production.
Q4. The logo and the color can be customized?
A. Yes, we welcome you to sample custom.
Q5. Any other good service your company can provide?
A. Yes,we can provide good after-sale and fast delivery.




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Step 1
Payment and order readiness
Minimum order: 1 Units
Payment terms, specifications, and order details are confirmed before preparation begins.
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Step 2
Preparation
7 days
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Step 3
Packaging and dispatch
Ocean + Express via FLY Logistics · Approx. shipping fee: $ 86.00 for 1 set · Transit time: Est. 16-23 days
Final packing, freight, and delivery dates are confirmed before dispatch.
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