Description

Lug Type Butterfly Valve

A lug type butterfly valve is a quarter-turn valve designed for reliable flow isolation and control in industrial piping systems. It features a lug-style body with threaded connection points that allow the valve to be securely mounted between pipeline flanges.

Unitek Valves manufactures and supplies butterfly valve solutions for different industrial requirements. Selection can be based on valve size, pressure rating, body material, seat material, media, and operating temperature.

Lug Butterfly Valve for Industrial Applications

A lug butterfly valve is widely used in water treatment, chemical processing, HVAC, power generation, and general industrial pipelines. Its compact construction makes it suitable for installations where space efficiency and convenient maintenance are important.

An industrial lug butterfly valve provides quarter-turn operation for quick opening and closing. The valve can be operated manually or configured with a suitable actuator depending on the application and required operating torque.

Lug Type Design and Installation

The lug body design provides individual connection points around the valve. This arrangement can support convenient installation and maintenance in suitable pipeline configurations.

Unlike a wafer design, a lug butterfly valve can be suitable for applications where the valve needs to remain securely attached to one side of the piping during certain maintenance procedures. Proper flange and bolt selection is essential for safe installation.

Material Options

A stainless steel lug butterfly valve can be selected for applications requiring good corrosion resistance and compatibility with specific process media. It is commonly considered for chemical, water, food, and general industrial services where stainless steel construction is appropriate.

A ductile iron lug butterfly valve offers a practical option for many water and utility applications. Carbon steel lug butterfly valves can be selected for industrial services requiring suitable strength and pressure performance.

Resilient Seated Lug Butterfly Valve

A resilient seated lug butterfly valve uses an elastomeric seat to provide sealing between the disc and valve body. The appropriate seat material should be selected according to the operating temperature and media.

This configuration is commonly considered for water distribution, cooling systems, utility lines, and other compatible applications requiring dependable shutoff.

High Pressure Applications

A high pressure lug butterfly valve should be selected according to the required pressure class, temperature, media, and operating conditions. Suitable body, disc, shaft, and sealing materials help ensure reliable performance under demanding service conditions.

For accurate valve selection, operating pressure and temperature should always be confirmed before ordering.

Manufacturer and Supplier in India

Unitek Valves is a lug type butterfly valve manufacturer and supplier in India, offering industrial valve solutions for water, utility, chemical, and process applications.

As a lug butterfly valve exporter, Unitek Valves can serve customers in domestic and international markets. Products can also be sourced through suitable lug butterfly valve dealers.

For product selection and pricing, customers should provide valve size, pressure rating, body material, seat material, connection requirements, and operating conditions.

Lug Type Butterfly Valve Manufacturer in India

Unitek Valve manufactures and supplies high-quality Lug Type Butterfly Valves designed for reliable isolation and flow control in industrial piping systems. The lugged butterfly valve features a compact quarter-turn design with threaded lugs on both sides of the valve body, allowing the valve to be securely bolted to the pipeline flanges.

Unlike wafer-type butterfly valves, the lug type design allows the valve to be independently bolted to each flange and is suitable for applications where one side of the pipeline may need to be disconnected while the valve remains installed. Lug type butterfly valves are also suitable for dead-end service when specifically designed and rated for such applications.

Our lug type butterfly valves are available in manual lever, gear operated, pneumatic actuated and electric actuated configurations, depending on valve size, pressure rating and application requirements.

The valves can be manufactured with different body, disc, shaft and seat materials to suit water, air, oil, gas, chemical and other industrial services.

Construction of Lug Type Butterfly Valve

A lug type butterfly valve consists of a valve body, disc, stem or shaft, seat and operating mechanism. The body incorporates threaded lugs that allow individual bolting to the mating pipeline flanges.

The centrally mounted disc rotates through approximately 90° to open or close the flow passage. Depending on the application, the valve can be supplied with resilient soft seating or high-performance seating arrangements.

Main Components

• • • Body
    • Disc
    • Stem / Shaft
    • Seat
    • Shaft bearings
    • Bushes
    • O-rings
    • Gearbox / Lever
    • ISO 5211 mounting pad

   

Features of Lug Type Butterfly Valve

• • Compact and lightweight construction
  • Quarter-turn operation
  • Low operating torque
  • Reliable shut-off performance
  • Threaded lug construction for secure installation
  • Suitable for independent flange bolting
  • Easy installation and maintenance
  • Available with replaceable or moulded seat designs
  • ISO 5211 mounting available for automation
  • Suitable for manual and automated operation
  • Different material combinations available
  • Suitable for a wide range of industrial applications

 

Specifications

BODY	:	CI / SGI / WCB / CF8 / CF8M / CF3 / CF3M
DISC	:	CI / SGI / WCB / CF8 / CF8M / CF3 / CF3M
SEAT	:	NITRILE / EPDM / NBR / VITON / PTFE
SHAFT	:	CS / AISI 410 / AISI 304 / AISI 316
SIZE RANGE	:	25 NB TO 1500 NB (1″ to 60″)