Lug Type Butterfly Valve

Structural features

Valve body: It is usually made of cast iron, cast steel, stainless steel and other materials. There is a valve seat in the middle of the valve body that is perpendicular to the direction of fluid flow.

Butterfly plate: A disk-like structure installed in the center of the valve body and connected to the actuator through the valve stem.

Valve stem: rotates through manual operation or automatic actuator (such as electric or pneumatic actuator) to control the rotation of the butterfly plate.

Seals: There are sealing rings around the valve seat and butterfly plate to ensure good sealing performance in the closed state.

Connection method

The connection method of lug-type butterfly valve is one of its distinctive features. There are multiple raised ear-shaped screw holes around the valve body to facilitate connection with the pipe flange. These tapped holes allow the valve to be installed independently on the pipe without the need for additional symmetrical flanges. The specific connection methods are as follows:

Single Side Disassembly: Allows the disassembly of one side of the pipe alone without dismantling the entire pipe system. This is very practical for situations that require frequent maintenance and replacement.

Double-sided installation: Can be fixed at both ends of the pipe, providing a more stable installation.

advantage

Easy installation and maintenance: Because the lug-type butterfly valve can disassemble the pipeline on one side, the workload of maintenance and replacement is reduced.

Compact structure and light weight: Compared with other types of valves, butterfly valves have a simple overall structure and relatively light weight.

Low cost: low manufacturing cost, economical and practical.

Small fluid resistance: The thin design of the butterfly plate provides small fluid resistance when in the open state, reducing energy loss.

Application scenarios

Lug type butterfly valves are widely used in various industrial fields, such as:

Water treatment system: used to control water flow and pressure.

Chemical and petrochemical industry: processing of various chemical media.

Food and beverage industry: Since the material can be made of stainless steel, it meets hygienic requirements.

HVAC system: used to regulate air flow.

In short, lug-type butterfly valves have been widely used in various industrial fields because of their unique structural design and convenient operation. Its ease of installation and maintenance makes it a common fluid control device in piping systems.