Concentric (Resilient Seated) Lug Type Butterfly Valve
Double Offset (High Performance) Lug Type Butterfly Valve
Triple Offset (Metal Seated) Lug Type Butterfly Valve
PTFE Lined Lug Type Butterfly Valve
Lug Type Al Bronze Butterfly valve (ASTM B148 C95400 / C95800)
Pneumatic Actuated Lug Type Butterfly ValveReliable, secure, and designed for system flexibility. Lug Type Butterfly Valves manufactured by C-Way Engineering Exports are designed for secure pipeline isolation, including dead-end service applications. Featuring individually threaded lugs on the valve body, this design allows safe removal of downstream piping without disturbing the opposite flange connection.
Engineered for industrial reliability, our lug butterfly valves are manufactured according to internationally recognized American (ANSI/API/ASTM), European (DIN/EN), and ISO standards, ensuring compatibility with global industrial and EPC projects
The Lug Type design is distinguished by its protruding "lugs" that provide pass-through holes for bolts. Unlike wafer types, these valves are threaded, allowing them to be bolted directly to the flanges on either side.
Key advantages include:
Lug style butterfly valves are widely used in oil & gas utilities, water treatment plants, chemical processing, and industrial piping systems requiring maintenance flexibility.
Inside the lug-style body, we offer three distinct engineering configurations to suit your pressure and temperature requirements:
| 1. Concentric Lug Butterfly Valves (Resilient Seated) | This is the most common lug-style valve. The stem is centered in the middle of the disc, and the disc is centered in the bore.
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| 2.Double Offset Lug Butterfly Valves (High Performance) | For more demanding environments, the double offset design moves the stem away from the centerline of the disc and the seat.
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| 3. Triple Offset Lug Butterfly Valves (Critical Service) | While most triple offset valves are flanged, we offer lug configurations for specialized high-pressure systems requiring metal-to-metal seating.
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| Parameter | Specification |
|---|---|
| Valve Type | Lug Type Butterfly Valve |
| Available Designs | Concentric (Resilient Seated), Double Offset, Triple Offset |
| Size Range | DN40–DN1200 / NPS 1½”–48” |
| ANSI Pressure Rating | Class 125 / 150 (Concentric) ; Class 150 / 300 (Double Offset) ; Class 150 / 300 / 600 (Triple Offset) |
| DIN / EN Rating | PN10 / PN16 (Concentric) ; PN16 / PN25 / PN40 (Double Offset) ; PN25 / PN40 / PN63 (Triple Offset) |
| Manufacturing Standards | Manufactured in accordance with ANSI / API, DIN / EN, ISO standards |
| Design Standards | American: API 609, MSS SP-67 DIN / EN: EN 593 BS: BS EN Series JIS, AWWA: AWWA C504 / C516 (on request) IS / BIS: IS Standards (on request) |
| Face to Face | EN 558 Series 20 / ISO 5752 |
| Testing Standards | API 598 / EN 12266-1 / ISO 5208 |
| Flange Compatibility | ANSI B16.5 / ASME B16.47 / EN 1092-1 |
| Mounting Standard | ISO 5211 Direct Mount |
| Temperature Range* | -20°C to +120°C (Soft Seat) ; up to +350°C (Double Offset) ; up to +550°C (Triple Offset) |
| Special Feature | Dead-End Service Capability |
| Operation | Lever, Gear Operated, Pneumatic Actuated, Electric Actuated |
| Component | Available Materials |
|---|---|
| Body | Ductile Iron (GGG40), ASTM A216 WCB, ASTM A351 CF8, CF8M |
| Disc | SS304, SS316, Aluminum Bronze, Duplex SS |
| Stem / Shaft | SS410, SS316, Duplex SS, 17-4 PH |
| Seat – Soft | EPDM, NBR, Viton |
| Seat – Chemical | PTFE, RPTFE |
| Seat – Metal | Stainless Steel with Graphite / Hardfaced |
| Bushings | Stainless Steel with Graphite / Hardfaced |
| Fasteners | Carbon Steel Zinc Plated, SS304, SS316 |
Multiple seat materials available depending on service conditions:
While both valves fit between flanges, the Lug Type offers two critical advantages:
Lug type butterfly valves are available in PN10, PN16, ANSI Class 150, and Class 300, depending on design and application requirements.
Yes, lug valves are commonly used in oil & gas, chemical plants, and industrial systems, especially where isolation and maintenance flexibility are required.
Available materials include ductile iron, WCB, stainless steel, and aluminum bronze, with various seat options depending on fluid and temperature conditions.
Yes, they can be supplied with pneumatic or electric actuators, and are designed with ISO 5211 mounting for easy integration.
Unlike wafer type valves, lug type valves have threaded inserts (lugs) that allow independent bolting and support dead-end service, making them more versatile for maintenance.
For ANSI or DIN standard Lug Type Butterfly Valve solutions tailored to your industrial project, contact C-Way Engineering Exports for technical support and global delivery assistance.
With decades of experience in the industry, 'C-Way Engineering Exports’ witnessed the critical importance of utilizing high-quality Pipes & Tubes that meet international standards. Whether you are in Oil and Gas, petrochemical, power generation, or any other industry relying on efficient and reliable piping systems, investing in high quality valves is essential.
Don't compromise on safety, performance, or longevity. Partner with trusted suppliers like us ‘C-Way Engineering Exports’, who prioritize quality and adherence to standards, ensuring your projects are built to last.
Contact us today to explore our full range of industrial valves, pipe fittings, pipes & tubes, flanges and experience the excellence of our products and how we can support your piping needs with our expertise and premium-grade valves. Let's build a robust infrastructure together.
We are here to help you!
+91 9391116127
sales@cwayexports.com
