Complaint
A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow.
Butterfly valves are easy and fast to open. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butterfly valves are usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed.
Valve Design: BS EN593/BS5155/API609/DIN3354
Face to Face: ISO 5752-20/BS EN558-20/API609
Flange Drilling: ASME B16.1 Class125/ASME B16.5 CL150/ASME B16.47 CL150/ DIN 2501 PN10-16/EN1092 PN10-16/JIS10K
Hydraulic Test: EN12266-1/API 598/ISO5208/JIS B2003
Shell Test Pressure: 24 bar/15 bar
Sealing Test Pressure: 17.6 bar/11 bar
Precision cast valve body, standard material, clear surface writing
One piece stem and body,more long service life.
Butterfly valves are similar to ball valves but have more advantages. They are open and close very quickly when actuated pneumatically. The disc is lighter than a ball, and the valves require less structural support than a ball valve of comparable diameter. Butterfly valves are very precise, which makes them advantageous in industrial applications. They are quite reliable and require very little maintenance.
1. Turning on/off easily and rapidly with less force. Having less fluid resistance and can be operated frequently.
2. Simple structure, small size and short face to face dimension, which suitable for large diameter valves.
3. It can be used for transmitting mud, fewer liquids are stored at apertures of pipe.
4. Long service life. Standing the test of tens of thousands of opening/closing operations.
5. Butterfly valves have excellent regulation performance.
6. Small torque. The pressure on discs at the two sides of the spindle is almost equal, causing contrary torque. Thereby, the valves can be opened with less force.
7. Sealing face is generally med of rubber or plastic. So the butterfly valves can be with good sealing under low pressure.
MOQ
We do not have any MOQ for this valve, 1 set order is also can be accepted.
It depends on the order quantity, but not more than 35-40days after received payment
| By sea | LCL shipment |
| Container shipment | |
| By air | By air cargo or courier for sample |
30% deposit, the balance will be paid before loading.
We promise 100% hydraulic testing before exporting, with a testing machine and testing bowl(for big size).
Body testing: 1.5* design pressure
Sealing testing 1.1* design pressure
We can provide a 12-month warranty after the shipping date.
Plywood case in exporting standard, bubble plastic packing inside
For large size, we will use steel pallet with bubble plastic packing outside
Our Overseas Exhibition
FAQ:
1. Yes, sample order is available for quality check and market test.
2. Quality is priority, we always attach the importance to quality control from the beginning to the end of the production.Every product will be fully assembled and carefully tested before painting, packing and shipping.
3. It usually takes about 25-30 working days to produce. For big order, it depends on the order quantity.
4. We usually accept T/T, L/C,and others payment.
5. We offer 12months warranty time.
6. Depends on your request, we have standard models in stock. Some special products and big order will be newly produced according to your order.
7. Yes, different models can be mixed up in one container.
8. Our company has been audited and approved ISO9001and WRAS certificate.
9. OEM & ODM services will be provided by us depend on your requirement.
Or you can visit our website: davanflowtek.en.made-in-china.com
