Lug Type Butterfly Valve
Lug Type Butterfly Valve
● Industrial Valve Solution
Lug Type Butterfly Valve

Designed for reliable flow isolation and control, lug type butterfly valves provide strong bolted mounting, maintenance flexibility and compact installation for demanding industrial applications.

Size: DN 40 – DN 1200
Pressure: PN10 – PN40
Connection: Lug Type
Operation: Lever / Gear / Actuator
Technical Specifications

Key design and construction parameters for selecting the appropriate lug type butterfly valve.

Parameter Specification
Valve Type Lug Type Butterfly Valve
Size Range DN 40 to DN 1200
Pressure Rating PN10 / PN16 / PN25 / PN40 depending on design
Body Material CI / DI / WCB / CF8 / CF8M
Disc Material SG Iron / SS304 / SS316
Seat Material EPDM / NBR / PTFE / Metal depending on duty
Shaft Material SS410 / SS304
End Connection Lug Type
Operation Lever / Gear / Pneumatic / Electric
Design Standard API / BS / EN as applicable
Testing Standard API 598
Material Selection Guide

Material selection should be based on the process medium, temperature, pressure and required corrosion resistance.

Body & Disc Material
  • CI / DI – suitable for water, utility and common-duty service
  • WCB – suitable for stronger industrial applications
  • CF8 / CF8M – preferred for corrosive and stainless steel service requirements
  • SS Disc – useful where corrosion resistance and media compatibility are important
Seat Selection
  • EPDM – suitable for water and utility applications
  • NBR – selected for oil-related and selected hydrocarbon service
  • PTFE – suitable for chemical compatibility
  • Metal Seat – selected for higher temperature and demanding shut-off duty
Where Lug Type Butterfly Valve Is Best Used

Compare lug type construction with other butterfly valve configurations based on installation requirements.

Application Requirement
Stronger bolted mounting Excellent
End-of-line service Highly Suitable
Maintenance flexibility Highly Suitable
Water & utility service Highly Suitable
Alternative Configuration
Lowest-cost compact installation Wafer may be economical
Heavy flange-supported mounting Double Flanged
One-side piping removal Lug Preferred
General isolation service Lug / Wafer
Engineering Considerations

Select the valve configuration according to the actual pipeline and process requirements.

01

Select lug type where stronger bolted support is preferred.

02

Use lug design where one-side piping removal may be needed.

03

Choose seat and body materials according to process media and temperature.

04

Select lever, gear or actuator depending on valve size and operating frequency.

Practical Notes

Lug type is often preferred over wafer where maintenance flexibility matters.

For the most economical compact solution, wafer type may still be preferred.

For stronger full flange-supported applications, double flanged may be better.

Disc, seat and torque selection strongly influence valve performance.

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Industrial Flow Control Solution
Lug Type Butterfly Valve Manufacturer and Supplier

Forex Valves manufactures and supplies Lug Type Butterfly Valves for reliable flow isolation and control in water, utility, process and industrial piping systems.

Available in sizes from DN 40 to DN 1200 and pressure ratings of PN10, PN16, PN25 and PN40, depending on the design and application.

Body, disk, shaft and seat materials can be selected according to the operating medium, pressure, temperature and service requirements. Manual and automated operating options are available for different installation requirements.

Industrial Lug Type Butterfly Valve

A practical valve solution for secure pipeline mounting, flow isolation and control across a wide range of applications.

Lug Type Butterfly Valves are designed for applications where compact construction, dependable shut-off and secure pipeline mounting are important.

The lug body allows the valve to be secured to pipeline flanges through individual bolting arrangements. This can provide useful installation and maintenance flexibility in suitable piping systems.

The appropriate configuration should be selected according to process medium, pressure, temperature, shut-off requirements and applicable project standards.

Common Service Areas
  • Water treatment and distribution
  • Water and wastewater systems
  • Industrial utility systems
  • HVAC and cooling systems
  • Process piping
  • Chemical processing
  • Pumping and pipeline systems
  • Infrastructure projects
  • Selected oil and hydrocarbon services
Technical Specifications
Parameter Specification
Valve Type Lug Type Butterfly Valve
Size Range DN 40 to DN 1200
Pressure Rating PN10 / PN16 / PN25 / PN40 depending on design
Body Material CI / DI / WCB / CF8 / CF8M
Disk Material SG Iron / SS304 / SS316
Seat Material EPDM / NBR / PTFE / Metal
Shaft Material SS410 / SS304
End Connection Lug Type
Operation Lever / Gear / Pneumatic / Electric
Design Standard API / BS / EN as applicable
Testing Standard API 598
Material Selection Guide

Material selection should be based on the process medium, pressure, temperature and required service performance.

Body & Disk Materials

CI / DI: commonly selected for water, utility and general-duty applications.

WCB: suitable for selected heavier industrial services where carbon steel construction is appropriate.

CF8 / CF8M: stainless steel options for applications where corrosion resistance and media compatibility are important.

Disk options include SG Iron, SS304 and SS316 depending on the process requirements.

Seat Materials

EPDM: commonly used for water and utility services.

NBR: suitable for selected oil-related and hydrocarbon services.

PTFE: useful where chemical compatibility is an important consideration.

Metal Seat: may be selected for higher temperature and demanding shut-off applications.

Final material selection should always be verified against actual operating temperature and chemical compatibility.

Manual & Automatic Operation

The operating arrangement can be selected according to valve size, operating frequency and automation requirements.

01
Lever Operated

Suitable for smaller valve sizes and applications requiring simple manual operation.

02
Gear Operated

Useful where higher operating torque or easier manual control is required.

03
Pneumatic & Electric

Suitable for automated systems, remote operation and integration with plant control systems.

Proper actuator sizing is important because operating torque depends on valve size, pressure, seat material, disk design and process conditions.

Lug Type vs Wafer Butterfly Valve

Both designs are compact butterfly valve solutions, but their mounting arrangements and application considerations differ.

Wafer Butterfly Valve

Installed between two pipe flanges and generally selected when a compact, lightweight and economical arrangement is preferred.

Double Flanged Butterfly Valve

May be preferred where full flange-supported mounting and a more robust installation arrangement are required.

Pipeline layout, pressure class, maintenance requirements and project specifications should be considered when selecting the appropriate butterfly valve configuration.

Applications of Lug Type Butterfly Valves

These valves can be configured for a wide range of industrial, utility and infrastructure applications.

Water & Wastewater

Water treatment plants, pumping systems, distribution networks and utility piping.

Industrial Processing

Flow isolation and control in process piping and manufacturing facilities.

Chemical Applications

Applications where suitable body, disk and seat materials are selected according to the chemical medium.

HVAC & Utilities

Cooling water, chilled water and other compatible utility services.

Infrastructure & Pipeline Projects

Large-diameter pipeline systems where compact construction and practical maintenance access are important.

General Industrial Services

General fluid isolation and flow-control duties where the selected valve configuration matches the process.

Engineering Considerations

Proper valve selection should consider the complete operating environment rather than valve size alone.

Pipeline diameter
Design and working pressure
Process temperature
Fluid properties
Corrosion requirements
Required shut-off performance
Body and disk material
Seat compatibility
Operating frequency
Manual or automatic operation
Actuator torque requirements
Applicable design and testing standards

Correct selection can improve operational reliability and help minimize premature component wear.

Lug Type Butterfly Valve Manufacturer & Supplier

Forex Valves manufactures and supplies Lug Type Butterfly Valves in different sizes, pressure classes, materials and operating configurations for water, utility, industrial and process applications.

Valve configurations can be selected according to pressure, temperature, process medium, connection arrangement and operating method.

Forex Valves serves customers across India and overseas, supporting different industrial, infrastructure and project requirements with application-oriented valve configurations.

Why Choose Forex Valves?
DN 40 to DN 1200 size range
PN10 / PN16 / PN25 / PN40 options
Multiple body and disk materials
EPDM / NBR / PTFE / Metal seats
Lever and gear operation
Pneumatic and electric actuation
Water and utility applications
Industrial and process applications
India and overseas project requirements