Hanlde Ductile Iron PN16 Lug Type Butterfly Valve

Actuator：Steel Handle

Valve Body：Ductile Iron/GGG40/GGG50

Valve Disc：Ductile Iron GGG50

Valve Stem：Carbon Steel

Valve Seat：EPDM

Pin：With Pin

Bolt：Stainless Steel SS201

Stem：Square

Standard：PN10/16 150LB 5K/10K

Top Flange：ISO 5211

No.：LWBV-3

Size：4inch DN100

Weight：6.8KG

Temperature：-10℃-120℃

Butterfly Control Valve

Butterfly control valve is referred to as butterfly valve, butterfly valve, also known as flap valve, is a control valve with a simple structure, consisting of a circular body and a circular plate shaped interceptor that supports the rotating action with a rotating shaft. Butterfly valve is different from the ball valve, the valve flap is always present in the fluid, so regardless of the valve position, the fluid will always produce a pressure drop.

What is butterfly valve used for?

The butterfly control valve is mainly suitable for large diameter, large flow, thick slurry and suspended particles of fluid flow regulation. The drive form has manual, worm gear drive, electric, pneumatic, hydraulic, electro-hydraulic linkage and other ways. With simple structure, small volume, light weight, material consumption, small installation size, rapid switching, 90 ° reciprocal rotation, small driving torque, etc. Liwei is a professional manufacturer of butterfly valves, and the valves we supply comply with ISO9001 international quality system certification standards.

What is the difference between check valve and butterfly valve?

Butterfly valve is a manual valve, which only does the switching function. Check valve is an automatic valve, which is to prevent the backflow of the pipeline medium. If you have any problems about butterfly control valves, pls contact us on time.

The driving mode of the lug type butterfly valve can be manual, worm gear, pneumatic, electric, the connection mode can be flange, butt clamp, the structure can be single eccentric, center line, double eccentric, triple eccentric,and the sealing structure can be soft seal or hard. Sealed, the pressure range is PN0.1-10Mpa, the nominal diameter is DN40～2000mm, and the material can be cast steel or stainless steel. Due to the wide range of use of valves, the same valve has different collocations in different occasions and working conditions.

Advantage

The wafer butterfly valve is connected between two pipe flanges with stud bolts. Its structure is simple, small in size and light in weight, and it 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. 

When the 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. The butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be inlaid on the valve body or attached to the periphery of the butterfly plate.

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