Lug Butterfly Valve Soft Seal

Technical Parameters

Face to Face:  EN558-1

End Flange Standard:  ANSI B 16.1

Upper Flange Standard : ISO 5211

Seat: NR, NBR, EPDM, PEFE, EPM

Medium: Water, oil, air, acids...

O-ring: NBR

Body: Cast iron, Ductile iron, Carbon Steel, Stainless Steel

Disc: CF8M

Stem: SS304

Bushing: PTFE

Type Connection: Wafer

Size: From DN50 to DN1600

Pressure range: From PN0.6, 1.0,1.6

Features of Lug Butterfly Valve Soft Seal

Quick and easy installation: The Lug Butterfly Valve Soft Seal can be installed in a wafer configuration, which means that it can be quickly and easily mounted between two flanges, without the need for additional bolts or hardware.

Bi-directional sealing: The soft seal material used in the valve ensures that it can seal effectively in both directions, providing efficient flow control in applications where reverse flow is possible.

Low pressure drop: The design of the valve allows for a smooth and unobstructed flow path, resulting in minimal pressure drop across the valve, which can help to reduce energy costs.

Corrosion resistance: The valve is available in a range of materials, including stainless steel and high-performance polymers, which can provide excellent resistance to corrosion and other forms of chemical attack.

Automation capability: The valve is designed to accept an ISO 5211 mounting plate, which allows for easy attachment of pneumatic or electric actuators, making it suitable for use in automated process control applications.

Versatility: The valve can be used in a wide range of applications and industries, including water treatment, chemical processing, food and beverage production, and many others.

Application of Lug Butterfly Valve Soft Seal

The valve is mainly used as a cut-off valve; it is suitable for transporting various corrosive, non On pipelines and containers of corrosive fluid media, it is used to regulate and cut off the flow of media.

Main Connection Dimension of Lug Butterfly Valve Soft Seal

FAQ

The Difference Between a Lug and Wafer Butterfly Valve

The difference between the two valves lies in the material used for the seat and disc. 

Lugs are usually made of ductile iron, while wafers are made from softer materials. Choosing between a lug and wafer butterfly valve requires considering the application and flow media.

Lug butterfly valves have threaded inserts on both sides of the valve body, making them suitable for systems with two sets of bolts without nuts. They are installed between two flanges, one with an internal thread, and their lug design allows for easy disconnection of the piping system post-installation. A lug butterfly valve typically lacks a spring or internal mechanism that could cause a leak.

In contrast, wafer-type butterfly valves are designed to withstand bi-directional pressure in fluid flow and prevent backflows in the system. They feature a tight-fitted seal, such as O-rings or gaskets, and are used with flat face valves. Composed of fewer materials, wafer butterfly valves are smaller and lighter and can be quickly opened and closed, making them ideal for various industrial applications.

Please contact us for technical sheet and quotation !