DN50 PN16 Gear Operated  Butterfly Valve Wafer Butterfly Valve EPDM Backup Flange Butterfly Valve Ductile Iron Wafer Flanged Lug China Factory Butterfly Valve

Technical Specification:

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

Material List:

• Cast Iron: ASTM A126 CL.B/ DIN1691 GG25
• Ductile Iron: ASTM A536 60-40-18/ DIN1693 GGG40
• Carbon Steel: ASTM A216 WCB
• Stainless Steel: ASTM A351 CF8/CF8M
• Bronze AL-Bronze: ASTM B148 C954

• Ductile Iron: ASTM A536 60-40-18/ DIN1693 GGG40
• Carbon Steel: ASTM A216 WCB
• Stainless Steel: ASTM A351 CF8/CF8M
• Bronze AL-Bronze: ASTM B148 C954
• Coating: Nickel-plated/Epoxy/EPDM//Nylon

• Stainless Steel: ASTM A182 304/316/410
• Alloy:  Monel K500

• Elastomer                     Working temperature
• EPDM                          -45ºC-135ºC
• NBR                             -10ºC-80ºC
• PTFE                            -10ºC-150ºC

• Stainless Steel: ASTM A182 304/316/410
• Alloy: Monel K500

Some Ending Clients



Advantages of a Butterfly Valve

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.

Delivery

It depends on the order quantity, but not more than 35-40days after received payment
 

Payment way

30% deposit, the balance will be paid before loading.
 

Hydraulic testing

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.

Packing way

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