Double eccentric butterfly valve EN558 series 13 flange type technical specification:

Nominal Diameter: DN100–DN2400

Nominal Pressure: 10Bar/16Bar/150lbs/25bar

Design Standard:  BS EN593/BS5155/API609/DIN3354

FTF Dimension:  ISO 5752 SERIES 13&14 /BS EN558 SERIES 13&14 /API609/DIN3202/ASME B16.10

Flange Connection: ASME B16.1 Class125/ASME B16.5 CL150/ASME B16.47 CL150/AWWA C207/

                             DIN 2501 PN10-16-25/EN1092 PN10-16-25

Inspection and Test:    EN12266-1/API 598/ISO5208

Material list:

1. Body

•     Ductile Iron:   ASTM A536 60-40-18/ DIN1693 GGG40,GGG50
•     Carbon Steel:  ASTM A216 WCB
•     Stainless Steel:  ASTM A351 CF8/CF8M

2. Disc

•     Ductile Iron:    ASTM A536 60-40-18/ DIN1693 GGG40,GGG50
•     Carbon Steel:   ASTM A216 WCB
•     Stainless Steel :  ASTM A351 CF8/CF8M
•     Bronze AL-Bronze: ASTM B148 C954

3. Stem 

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

4. Seat                        SS304/SS316/Brass
5. Sealing Ring          EPDM/NBR
6. Retaining Ring       Carbon Steel/SS304/SS316
7. Screw                     Carbon Steel/SS201/SS304/SS316
8. Packing                 NBR/EPDM/VITON/Flexible Graphite
9. Yoke                     Cast Iron/Carbon Steel
10. Bushing               PTFE/Bronze
11. Pin

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

Advantages of Double eccentric Butterfly Valve

1.The double eccentric butterfly valve shaft is placed offset to one side of the valve centerline. Benefits of this valve versus a single eccentric is that the valve seat and the disk will not contact while traveling. The disc will cam away from the seat while opened, and contact is not established before the final shut off position.

2. The double eccentric type is the difference of the pressure-area on the disc. Since the stem is offset to one side the pressure area will be slightly bigger on one side of the shaft. If the valve installed in the preffered direction the process pressure will help the valve making a better sealing.

3. Small operation torque of big size butterfly valve

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 testing machine and testing bowl(for big size).

Body testing: 1.5* design pressure

Sealing testing 1.1* design pressure

We can provide 12 month warranty after 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

If you want to know more about this valve, please contact info@davanflowtek.com

You also can send us the message by below Inquiry button  or by contact us