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150LB Worm Gear Operate Double Flange ASTM A216 WCB Body Stainless Steel Disc EPDM Seal Butterfly Valve

Actuator:Worm Gear

Valve Body:ASTM A216 WCB

Valve Disc:SS316 CF8M

Valve Stem:Carbon Steel

Valve Seat:EPDM

Pin:With Pin

Bolt:Stainless Steel SS201



Top Flange:ISO 5211


Size:4inch DN100






The main features of flanged butterfly valves are:

1. Small and light, easy to disassemble and repair, and can be installed in any position.

2. The structure is simple and compact, the operating torque is small, and the 90° turn to open quickly.

3. The flow characteristics tend to be straight, and the regulation performance is good.

4. The connection between the butterfly plate and the valve stem adopts a pinless structure, which overcomes 

possible internal leakage points.

5. The outer circle of the butterfly plate adopts a spherical shape, which improves the sealing performance and

 prolongs the service life of the valve. It still maintains zero leakage when opening and closing more than 

 50,000 times under pressure.

6. The seal can be replaced, and the seal is reliable to achieve two-way sealing.

7. The butterfly plate can be sprayed with a coating layer, such as nylon or PTFE, according to user requirements.

8. The valve can be designed as flange connection and wafer connection.

9. The driving mode can be manual, electric or pneumatic.


Flanged butterfly valve: The flanged butterfly valve has a vertical plate structure, and the stem is an integral 

metal hard seal. The sealing ring of the valve is a composite structure of flexible graphite plate and stainless 

steel plate. It is installed on the valve body and the sealing surface of the butterfly plate. Surfacing stainless steel. 

The sealing ring of the soft sealing valve is made of nitrile rubber and is installed on the butterfly plate. Flange 

type soft sealing 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



Top Flange:ISO 5211

Size:4inch DN100, DN50-DN1800



Copyright © Tianjin LIWEI Valve Co., Ltd. All Rights Reserved | Sitemap Technical Support: Reanod

Factory Add.:

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

Office Add.:

C12 Aliyun Jinnan District, Tianjin, China.

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