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F.R.L Pneumatic Wafer Butterfly Valve

Actuator:F.R.L Pneumatic 

Valve Body:Ductile Iron/GGG40/GGG50

Valve Disc:Stainless Steel 316 CF8M

Valve Stem:Stainless Steel 420

Valve Seat:PTFE

Pin:With Pin

Bolt:Stainless Steel SS201


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

Top Flange:ISO 5211


Size:4inch DN100





Wafer Butterfly Valve -LWBV-4 

Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is a 

pneumatic valve that uses a circular butterfly plate that rotates with the stem to achieve activation. It is mainly 

used as a cut-off valve. It can also be designed to have the function of adjustment or segment valve. The use of 

medium-diameter pipes is increasing. Pneumatic butterfly valve classification: stainless steel pneumatic butterfly 

valve, hard sealing pneumatic butterfly valve, soft sealing pneumatic butterfly valve, carbon steel pneumatic 

butterfly valve. The main advantages of the pneumatic butterfly valve are simple structure, small size, light weight 

and low cost. This feature of the pneumatic butterfly valve is particularly remarkable. It is installed in a dark tunnel 

at high altitude and is controlled by a two-position five-way solenoid valve. It is easy to operate and can also 

adjust the flow medium.


The pneumatic wafer butterfly valve has a novel structure. The valve body is constructed to meet the short-distance wafer structure formed by the narrow pipeline space. The external leakage is zero and the internal leakage meets the national standards.

Pneumatic rubber-lined butterfly valve, connection method has flange, wafer, sealing lined with nitrile butad

iene rubber, ethylene propylene rubber, heat-resistant ethylene propylene rubber, natural rubber, neoprene, 

fluorine rubber, PTFE, according to medium chemistry Nature has a more reasonable choice.

Pneumatic fluorine-lined butterfly valve, anti-corrosion fluorine-lined butterfly valve adopts a two-piece valve

 body combination, the valve seat and the valve body lining are integrated, when the valve is working, only the

 all-plastic valve seat and the plastic-lined butterfly plate are in contact with the medium, and the product can 

withstand Corrosion of any medium except for molten alkali metal and elemental fluorine, in which D71F46 

valve stem and butterfly plate (forging) are integrated, and the surface is evenly coated with a layer of FEP. 

The inner surface of the valve body channel is smooth, the fluid resistance is small, the CV value is high, the

 flow capacity is strong, and the torque is moderate. It adopts a four-stage sealing structure and is equipped 

with a temperature-resistant and anti-aging SI rubber elastic gasket valve seat outside the sealing surface, 

which is fully achieved. Zero leakage of the medium.


LWBV-4 Pneumatic Butterfly Valve


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, DN20-DN1200



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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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