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PN10/16 Worm Gear Ductile Iron Body Stainless Steel Disc EPDM Double Flange Butterfly Valve

Actuator:Worm Gear

Valve Body:Ductile Iron/GGG40/GGG50

Valve Disc:Ductile Iron GGG50/Stainless Steel

Valve Stem:Carbon Steel/SS420

Valve Seat:EPDM

Pin:With Pin/No Pin

Bolt:Stainless Steel SS201


Standard:PN10/16 150LB 5K/10K

Top Flange:ISO 5211





Double Flange Butterfly Valve ,is a normal type of butterfly valve 

  1. Valve body and seat are adopted with split design for easy maintenance and replacement.

  2. After maching of valve body, because of without lining rubber, to avoid the pressure deformation of the lining rubber.Which ensure the accuracy of body symmetry and reduce the torque of butterfly valve.

  3. Valve stem and valve body are equipped with 4 oil proof bearing,which is benefical to stem support.the upper shaft hole is equipped with 2 o-ring and 1 special rectangular screw ring water seal,which make s the axial seal more reliable.

  4. The 2 ends of the valve plate shaft hole are designed with grooves,which can effectively prevent damage of valve seat caused by the excessive extrusion when valve shaft is loaded into valve to ensure the sealing of valve seat end face and the valve plate.

  5. After quenching and tempring process ,the pin material of butterfly valve has high strength and high corrosion resiatance ,and the connection is more safe and stable.

  6. A Non-Pin stem  adopts an anti-exit structure ,spring+U type card structure are used in the upper part of the stem,which can not only compensate for installation errors,but also prevent the stem from loosening.

  7. LT type valve body is thicker than the normal wafer butterfly valve with high pressure resistance and not easy to deform.


The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be opened and closed quickly by rotating 90°, and the operation is simple. At the same time, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation reaches 90°, the valve is fully opened. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics.

PN10/16 Worm Gear Ductile Iron Body Stainless Steel Disc EPDM Double Flange Butterfly Valve


LWBV-2 Double Flange Butterfly Valve

Actuator:Steel Handle/Aluminum2002 2004 2007/Stamping Handle/Stainless Steel

Valve Body:Ductile Iron/GGG40/GGG50/WCB ASTM A216/Brass/Aluminum/Stainless Steel

Valve Disc:Ductile Iron GGG50/Aluminum-Bronze/Stainless SteelCF8 CF8M CF3M 2507 1.4529/WCB

Valve Stem:Carbon Steel/SS410 SS420 SS416 SS304 SS316 SS316L 

Valve Seat:EPDM/NBR/PTFE/Viton/Natural Rubber

Pin:With Pin/No Pin

Bolt:Stainless Steel SS201


Standard:PN10/16 150LB 5K/10K

Top Flange:ISO 5211

Size:4inch DN100, DN50-DN1800





Packing Details:

Normal We use 1.1*1.1*1.1m Wooden Box 

Each Valve we use 1 pcs bubble bags and 1 pcs plastic bags 

1   20GP container can loading 20 * 1.1*1.1*1.1m wooden boxes

1   20GP container can loading 24-26Ton

1   1.1*1.1*1.1m wooden box can loading valves qty

Calculate Base On Double Flange Butterfly Valve Gear Box Type

1    1.1*1.1*1.1m wooden box can packing    2inch     70Pcs

1    1.1*1.1*1.1m wooden box can packing    2.5inch   65Pcs

1    1.1*1.1*1.1m wooden box can packing    3inch   60Pcs

1    1.1*1.1*1.1m wooden box can packing    4inch   50Pcs

1    1.1*1.1*1.1m wooden box can packing    5inch   45Pcs

1    1.1*1.1*1.1m wooden box can packing    6inch   45Pcs

Normal for flange butterfly valve ,2-6inch packing by wooden box, >8inch packing by wooden plate. save space,weight and cost.

Each Wooden Box weight is 60-65KG 

Each Wooden Plate weight is 10-20KG 

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Factory Add.:

No.3 Xintai Road, Jinnan District, Tianjin, China.

Office Add.:

C12 Aliyun Jinnan District, Tianjin, China.

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