Lug Butterfly Valves

What is a lug butterfly valve?

Lug butterfly valve is a new type of butterfly valve designed on the basis of absorbing the advantages of several butterfly valves with different structures. The sealing surface of the valve plate of this butterfly valve is a spherical arc body, and the sealing mechanism achieves a real dynamic seal through the system pressure, so it has excellent cutting performance and durability. The utility model has the advantages of small volume, light weight, wide manufacturing range and easy maintenance.

Features of lug butterfly valve

Double eccentric butterfly plate with spherical sealing surface and single flexible lip seal seat are adopted, which is suitable for occasions requiring reliable sealing and good adjustment characteristics. Due to the design of double eccentric butterfly plate, the valve has tight sealing performance and long service life. It can be used to quickly cut off or adjust the flow. The product is suitable for the transportation of liquid and gas (including steam) in various industrial pipelines. Specially selected, it can also be used for special media, such as oxygen, high vacuum, sulfur resistant or corrosive media. The product can also have fireproof structure for selection. The connection mode can be wafer type or lug type single flange design for large pipe diameter and pipeline through terminal.
Because the butterfly valve of this product adopts the three-dimensional eccentric principle design, the spatial motion track of the sealing surface is idealized, and the sealing surfaces have no friction and interference with each other. In addition, the sealing materials are properly selected, so that the sealing, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve are reliably guaranteed.

  • 1. When the lug butterfly valve and the pipeline are installed, the flanges on both sides are installed with bolts respectively, so that the valve body and the sealing surface of the valve body are not squeezed by the bolts, which is good for the sealing life,
  • 2. The lug can be easily installed in the discharge position.
  • 3. There are some defects in the connection mode of the clamp. When the bolt installs the valve in the pipeline, the bolt squeezes the whole butterfly valve body between the flanges on both sides. The bolt is relatively long, the creep is also large, and it is easy to leak, while the bolt of the lug is relatively short, so it does not need to pass through the whole valve body.

The main features of lug butterfly valve are as follows:

  • 1. Small opening torque, flexible and convenient, labor-saving and energy-saving.
  • 2. The three-dimensional braided core structure makes the butterfly plate tighter and tighter, and its sealing performance is reliable to achieve no leakage.
  • 3. High pressure resistance, corrosion resistance, wear resistance, long service life, etc.

China lug butterfly valve manufacturer supplies lug butterfly valves for industrial use, in kinds of materials such as carbon steel, stainless steel, alloy steel, etc.

List of Valves

Duplex A995 5A Lugged Butterfly Valve 24 Inch Class 150
Request a quote


China Butterfly Valve Manufacturer offers Duplex A995 5A Lugged Butterfly Valve, 24 Inch, Class 150.

ASTM A216 WCB Lug Type Butterfly Valve DN150 PN16
Request a quote


China Butterfly Valve Manufacturer offers ASTM A216 WCB Lug Type Butterfly Valve, DN150, PN16.