Double Eccentric Butterfly Valves

Double Eccentric Butterfly Valves | Shrinathji Infracon

Double Eccentric Butterfly Valves

Introduction

Need high-performance isolation with low wear and precise control? Shrinathji Infracon supplies double eccentric (double-offset) butterfly valves engineered for cement plants, fly-ash terminals, water utilities, and process industries. The offset geometry delivers tight shutoff, smooth operation, and longer seat life.

Description

In a double eccentric design, the shaft is offset from the valve centerline and the disc is offset from the shaft center. This geometry causes the disc to lift off the seat immediately during opening, drastically reducing rubbing and torque. Options include wafer, lug, and flanged bodies with soft or metal seats to match temperature, pressure, and media conditions.

Applications and Benefits

Applications	Benefits
Silo discharge isolation and air-slide networks Dust collection ducts and process gas lines Cooling water, raw water, and utility pipelines Pneumatic conveying and diverter stations Bulk powder handling in cement and minerals	Reduced seat wear for longer service life Lower operating torque; easy to automate Reliable shutoff even in larger diameters Compact, lightweight body simplifies handling Multiple seat/disc materials for media compatibility

Key Features of Double Eccentric Butterfly Valves

Offset shaft and disc geometry minimizes friction and galling
Body styles: wafer, lug, and flanged to suit piping layouts
Seat choices: EPDM/NBR/PTFE soft seats or metal seats for high temperature
Discs in SS or coated ductile iron for corrosion and abrasion resistance
Operators: lever, worm gearbox, pneumatic or electric actuation
Low pressure drop profile for energy-efficient operation
Provision for limit switches and position indicators
Size range and pressure class tailored to plant duty

Where These Valves Are Used

Cement & Fly Ash: Silo isolation, air-slide throttling, dust collector manifolds
Power & Process: Flue gas/cooling water lines and maintenance isolation
Water & Wastewater: Transmission mains, plant headers, and pump stations

Why Choose Us?

Shrinathji Infracon integrates valves within turnkey silo and conveying packages—right sizing, correct seat/disc pairing, and the best operator choice for your control philosophy. Standardized spares, fast dispatch, and responsive service reduce downtime.

Uses & Importance

Double eccentric valves combine reliable tightness with low wear, making them ideal for frequent cycling and large diameters. The offset motion protects the seat, stabilizes torque, and ensures consistent performance across varying temperatures and pressures.

Manufacturer & Supplier Information

Shrinathji Infracon supplies double eccentric butterfly valves as part of new installations and retrofit upgrades. Share medium, temperature/pressure, size, flange standard, and actuation preference for a matched configuration and quick quotation.

FAQs

1. How is a double eccentric valve different from a resilient seated (concentric) valve?

The offset disc/shaft avoids continuous rubbing on the seat, reducing wear and operating torque while improving sealing at pressure.

2. Which seat material should I choose?

EPDM for water/general service, NBR for oils, PTFE for chemical compatibility; metal seats for higher temperatures or abrasive duties.

3. Can these valves be automated?

Yes. We supply pneumatic/electric actuators with accessories like positioners and limit switches as required.

4. Do you offer lug and flanged options?

All three—wafer, lug, and flanged—are available to match piping, isolation, and end-of-line requirements.

5. What data do you need to size the valve correctly?

Line size, flange standard, media details, temperature/pressure, required shutoff class, and operator type.

Conclusion

Choose Shrinathji Infracon for double eccentric butterfly valves engineered for Indian operating conditions—delivering long life, low torque, and dependable tightness in critical services.

Contact Details

Talk to our specialists today for tailored solutions and fast assistance.

Company:

Shrinathji Infracon

Phone:

+91 9829101412

WhatsApp: Chat on WhatsApp

Email: Shrinathjinfracon@gmail.com

Website: siloindia.in

Address:

Shed No.1, A Matru Chaya Industrial Estate, Dhamatwan-Vanch Road, Village-Dhamatwan, Taluka-Dascroi, Ahmedabad-382435, Gujarat, INDIA

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Double Eccentric Butterfly Valves