Flanged Double Offset Butterfly Valve

Corrosion
Resistant

Leak Tight
Sealing

Automated
Operation

Low Maintenance
Long Life

Alis Valves is a trusted Double Flanged Double Offset Butterfly Valve Manufacturer India , offering high-performance butterfly valves for medium to high-pressure industrial applications. Designed with a robust double flanged body and double offset disc geometry, these valves provide reliable shut-off, reduced seat wear, low operating torque, and long service life for oil & gas, petrochemical, power generation, water treatment, chemical processing, and industrial process systems.

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Product Specifications and Overview

Alis Valves is a trusted Flanged Double Offset Butterfly Valve Manufacturer India, offering high-performance butterfly valves for medium to high-pressure industrial applications. Designed with a robust flanged body and double offset disc geometry, these valves provide reliable shut-off, reduced seat wear, low operating torque, and long service life for oil & gas, petrochemical, power generation, water treatment, chemical processing, and industrial process systems.

Size Range

DN50 to DN500 (2" to 20")

Body Material

Ductile Iron, Carbon Steel (WCB), SS304, SS316, Duplex Stainless Steel

Seat Material

PTFE, RPTFE, EPDM, NBR, Metal Seat (Optional)

Temperature Range

-20°C to +250°C (Up to +550°C with Metal Seat)

Design Standards

API 609, ASME B16.34, ISO 5211

Pressure Rating

PN10, PN16, PN25, PN40 / ANSI Class 150 & 300

Disc Material

SS304, SS316, Duplex Stainless Steel

Flange Standard

ASME B16.5, EN 1092-1, IS, JIS (As Required)

Leakage Class

API 598 / ISO 5208

Product Gallery

Industries Served

Cement

Engineered valve solutions tailored for critical Cement operating processes.

Chemical

Engineered valve solutions tailored for critical Chemical operating processes.

Data centres

Engineered valve solutions tailored for critical Data centres operating processes.

Fertilizer

Engineered valve solutions tailored for critical Fertilizer operating processes.

Applications

Ammonia

High-performance flow automation engineered for Ammonia operations.

CO₂

High-performance flow automation engineered for CO₂ operations.

Compressed Air

High-performance flow automation engineered for Compressed Air operations.

Cryogenic

High-performance flow automation engineered for Cryogenic operations.

Frequently Ask Questions

What Is a Flanged Double Offset Butterfly Valve?

It is a flanged butterfly valve incorporating two shaft/disc offsets to reduce seat friction and operating torque while providing reliable shut-off.

What Is the Difference Between a Concentric and Double Offset Butterfly Valve?

In a concentric butterfly valve, the shaft and disc are centered in the sealing arrangement. A double-offset valve uses eccentric geometry, allowing the disc to disengage from the seat earlier during opening and reducing rubbing and wear.

Who Is a Flanged Double Offset Butterfly Valve Manufacturer in India?

Alis Valves manufactures and supplies Flanged Double Offset Butterfly Valves for water treatment, wastewater, oil & gas, chemical, power, HVAC, petrochemical and other industrial applications.

What Are the Two Offsets?

The first offset moves the shaft away from the centerline of the valve body, while the second offset moves the shaft relative to the sealing axis. This allows the disc to move away from the seat quickly during opening.

Is the Valve Bi-Directional?

Soft-seated double-offset designs can be configured for bi-directional tight shut-off. Metal-seated versions may have a defined preferred flow direction depending on their seat design.