TRIPLE ECCENTRIC (TRIPLE OFFSET) WORM GEAR FLANGED BUTTERFLY VALVES

Description

TRIPLE ECCENTRIC (TRIPLE OFFSET) WORM GEAR FLANGED BUTTERFLY VALVES
Heavy-Duty Metal Seated Butterfly Valves for High Pressure & High Temperature Applications in India

INTRODUCTION

In modern Indian industries such as oil & gas, power plants, refineries, steel plants, chemical processing units, cement factories, and large infrastructure projects, the demand for rugged, leak-proof, and long-life isolation valves has increased significantly. Among various flow control solutions, the Triple Eccentric (also known as Triple Offset) Worm Gear Flanged Butterfly Valve has emerged as a preferred choice for severe service applications where zero leakage, high temperature resistance, and high pressure handling are critical.

Krishna Industries, based in Ahmedabad, Gujarat, India, is a trusted supplier of Triple Eccentric Butterfly Valves for industrial buyers across India. We supply valves that meet Indian and international standards and are suitable for demanding operating conditions. Our focus is to deliver reliable, cost-effective, and long-lasting valve solutions to Indian EPC contractors, OEMs, industrial plants, government projects, and exporters.

Triple eccentric butterfly valves are also commonly searched and known in India as:
– Triple offset butterfly valves
– Metal seated butterfly valves
– High performance butterfly valves
– Zero leakage butterfly valves
– Flanged butterfly valves with worm gear

This product page is designed specifically for Indian buyers who require detailed technical understanding, application clarity, and supplier credibility before making a purchase decision.

WHAT IS A TRIPLE ECCENTRIC (TRIPLE OFFSET) BUTTERFLY VALVE?

A Triple Eccentric Butterfly Valve is a metal-seated valve designed with three distinct offsets in its geometry. These offsets eliminate seat wear, reduce friction, and ensure tight shut-off even under extreme pressure and temperature conditions.

Unlike conventional concentric or double eccentric butterfly valves, the triple offset design ensures that the disc does not rub against the seat during opening or closing. This makes the valve ideal for applications requiring long service life and minimal maintenance.

The valve operates using a worm gear mechanism, which allows smooth operation, precise control, and reduced operating torque, especially in larger sizes.

KEY DESIGN FEATURES OF TRIPLE ECCENTRIC BUTTERFLY VALVES

1. Triple Offset Geometry
The three offsets include:
– First offset: Shaft offset from the centerline of the seat
– Second offset: Shaft offset from the centerline of the pipe
– Third offset: Conical sealing surface

This design ensures cam-like action, eliminating friction between seat and disc.

2. Metal-to-Metal Seating
The sealing is achieved using metal seats such as stainless steel, alloy steel, or hard-faced materials. This allows the valve to handle high temperatures and abrasive media.

3. Worm Gear Operated
The worm gear operator ensures:
– Smooth opening and closing
– Reduced manual effort
– Better control for large diameter valves
– Enhanced safety in operation

4. Flanged End Connection
Flanged ends allow easy installation, strong pipeline connection, and compatibility with Indian piping standards.

TECHNICAL SPECIFICATIONS

– Valve Type: Triple Eccentric / Triple Offset Butterfly Valve
– Operation: Worm Gear Operated
– End Connection: Flanged
– Size Range: Typically DN 50 to DN 1200 (2” to 48”)
– Pressure Rating: ANSI Class 150 / 300 / 600 or PN 10 / PN 16 / PN 25 / PN 40
– Temperature Range: Up to 450°C (depending on material)
– Leakage Class: Zero Leakage (API 598 compliant)
– Body Materials: Cast Iron, Ductile Iron, Carbon Steel (WCB), Stainless Steel (CF8 / CF8M), Alloy Steel
– Disc Material: Stainless Steel, Alloy Steel
– Seat Material: Stainless Steel, Inconel, Stellite, Hard-faced alloys
– Shaft Material: Stainless Steel / Alloy Steel
– Standards: API, ANSI, ASME, IS, BS, DIN (as applicable)

APPLICATIONS IN INDIAN INDUSTRIES

Triple eccentric butterfly valves are widely used across multiple Indian industries due to their reliability and performance.

1. Oil & Gas Industry
Used in upstream, midstream, and downstream processes including refineries and gas pipelines.

2. Power Plants
Thermal power plants, combined cycle plants, and boiler feed lines require metal seated valves for high temperature steam and water.

3. Chemical & Petrochemical Plants
Suitable for corrosive chemicals, acids, and aggressive media.

4. Steel & Metal Industries
Used in blast furnaces, rolling mills, and high temperature process lines.

5. Cement Plants
Ideal for handling hot gases, dust-laden air, and abrasive media.

6. Water & Wastewater Projects
Used in pumping stations and treatment plants where durability is critical.

7. Marine & Shipbuilding
Used in fuel oil, ballast water, and cooling systems.

ADVANTAGES OF TRIPLE ECCENTRIC BUTTERFLY VALVES

– Zero leakage performance
– Long service life
– Minimal maintenance
– Suitable for high pressure and high temperature
– Lower torque compared to gate and globe valves
– Compact design saves space
– Faster operation
– Cost-effective for large sizes

WHY WORM GEAR OPERATION IS IMPORTANT

For medium to large size butterfly valves, manual lever operation becomes impractical. Worm gear operation provides:
– Mechanical advantage
– Safer operation
– Reduced operator fatigue
– Locking arrangement to prevent accidental operation
– Compatibility with electric or pneumatic actuators (if required later)

FLANGED CONNECTION BENEFITS FOR INDIAN PIPELINES

Flanged butterfly valves are preferred in India because:
– Easy installation and removal
– Strong and leak-proof joints
– Compatible with Indian piping practices
– Suitable for high pressure lines
– Easy alignment during installation

QUALITY CONTROL AND TESTING

At Krishna Industries, all supplied triple eccentric butterfly valves are subjected to standard quality checks including:
– Visual inspection
– Dimensional inspection
– Hydrostatic pressure testing
– Seat leakage testing
– Functional testing of worm gear operation

We ensure that valves supplied meet project specifications and Indian industry expectations.

WHY BUY FROM KRISHNA INDUSTRIES – AHMEDABAD, GUJARAT

Krishna Industries is based in Ahmedabad, Gujarat, one of India’s largest industrial and manufacturing hubs. Our location allows us to efficiently serve customers across India including Maharashtra, Rajasthan, Madhya Pradesh, Tamil Nadu, Karnataka, Andhra Pradesh, Telangana, Odisha, West Bengal, and NCR regions.

Our strengths:
– Strong supplier network
– Competitive pricing for Indian buyers
– Technical understanding of industrial valves
– Prompt response to inquiries
– Support for EPC projects and bulk orders
– Experience in domestic and export supply

We position ourselves not just as traders, but as solution providers for industrial flow control requirements.

PACKING AND DELIVERY

Valves are properly packed to prevent damage during transportation. Wooden boxes, bubble wrapping, and proper labeling are used based on valve size and destination.

Delivery timelines depend on size, quantity, and specifications but are communicated clearly before order confirmation.

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What is the difference between triple eccentric and double eccentric butterfly valves?
Triple eccentric valves provide metal-to-metal sealing with zero leakage and are suitable for higher temperature and pressure compared to double eccentric valves.

2. Are triple eccentric butterfly valves suitable for steam applications?
Yes, they are ideal for high temperature steam applications in power plants and process industries.

3. What sizes are commonly used in Indian projects?
Common sizes range from DN 150 to DN 600, but larger sizes are also used in infrastructure projects.

4. Can these valves be automated later?
Yes, worm gear operated valves can be easily converted to electric or pneumatic actuation.

5. What standards do these valves comply with?
They generally comply with API, ANSI, ASME, IS, and DIN standards as required.

6. Are these valves fire-safe?
Metal seated triple eccentric butterfly valves are inherently fire-safe due to their design.

7. What maintenance is required?
Minimal maintenance is required due to non-rubbing seat design.

8. Are these valves suitable for corrosive media?
Yes, with appropriate material selection such as stainless steel or alloy steel.

9. Do you supply valves with test certificates?
Yes, manufacturer test certificates can be provided as required.

10. Do you supply across India?
Yes, Krishna Industries supplies triple eccentric butterfly valves across India from Ahmedabad, Gujarat.

CONCLUSION

Triple Eccentric (Triple Offset) Worm Gear Flanged Butterfly Valves are a critical component in modern Indian industrial infrastructure. Their superior sealing, durability, and ability to handle extreme conditions make them the preferred choice for demanding applications.

If you are an Indian buyer looking for a reliable supplier of triple eccentric butterfly valves, Krishna Industries, Ahmedabad, Gujarat, is well-positioned to support your requirements with quality products, competitive pricing, and professional service.

For inquiries, technical discussions, or quotations, contact Krishna Industries today and get the right valve solution for your project.