Double Offset Butterfly Valve | High-Performance, Reduced Friction

Name: Reguvale Double Offset Butterfly Valve
Brand: Reguvale
Availability: InStock

Double offset butterfly valve - Reguvale

Double Offset Butterfly Valve — High-Performance, Reduced Friction

Reduced Friction · Longer Seat Life · Oil & Gas · Chemical · Process

Reguvale’s double offset butterfly valve (high-performance) offsets the shaft both behind the disc centerline and from the body centerline, so the disc swings away from the seat immediately on opening — reducing friction, wear and operating torque compared with concentric designs.

Engineered for higher pressure and temperature service than concentric rubber-seated valves — up to 230°C with soft seats. Ideal for oil & gas, chemical processing, HVAC and water treatment where reliable shutoff and long seat life matter.

Body materials: ductile iron GGG50, carbon steel WCB, stainless steel CF8/CF8M. Seat: EPDM / NBR / PTFE / Viton (soft-seated high-performance). Flanged ends per EN 1092 / ASME B16.5. Manual gear, pneumatic or electric actuation available.

DN50–DN2000 PN16/PN25/PN40 Up to 230°C Class V/VI Leakage ISO 5211 Actuator Ready

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Key Features

✓ Reduced Friction & Wear

Disc swings away from the seat on opening — less rubbing, longer seat life, lower torque.

✓ Higher Pressure & Temperature

Handles higher pressure and temperature than concentric rubber-seated valves, up to 230°C.

✓ Tight Shutoff

Class V/VI leakage performance for reliable isolation in demanding service.

✓ Flexible Seat Options

EPDM, NBR, PTFE or Viton seats to match media and temperature.

✓ Quarter-Turn Speed

90° operation with manual gear, pneumatic or electric actuator.

✓ Multi-Material Body

Ductile iron, carbon steel or stainless steel to match your piping spec.

Technical Specifications

Parameter	Specification
Design Type	Double Offset, High-Performance
Body Material	Ductile Iron GGG50 / Carbon Steel WCB / Stainless Steel CF8 (304) / CF8M (316)
Seat Material	EPDM / NBR / PTFE / Viton (FKM)
Size Range	DN50 – DN2000 (2" – 80")
Pressure Rating	PN16 / PN25 / PN40 (ANSI Class 150/300 on request)
Temperature	-20°C to +230°C (by seat material)
Leakage Class	Class V / VI
End Connection	Flanged (EN 1092 / ASME B16.5)
Operation	Manual Gear / Pneumatic / Electric
Certification	ISO 9001:2015, SGS Material Test (MTC per batch)

Applications

⚑ Oil & Gas

Pipeline isolation and process control where higher pressure and reliable shutoff are required.

⚑ Chemical Processing

Corrosive and moderate-temperature media with PTFE or Viton seats.

⚑ HVAC & District Cooling

Chilled water and heating systems needing longer seat life than concentric valves.

⚑ Water Treatment

Intake, distribution and backwash lines with demanding duty cycles.

Frequently Asked Questions

What is a double offset butterfly valve?

A double offset butterfly valve has the shaft offset both behind the disc centerline and from the body centerline. This makes the disc swing away from the seat immediately on opening, reducing friction and wear compared with concentric designs.

How is double offset different from triple offset?

Double offset valves typically use soft seats and operate up to about 230°C. Triple offset adds a conical metal seat for Class V shutoff up to 550°C. Choose double offset for high-performance soft-seated service, triple offset for severe metal-seated service.

Where are double offset butterfly valves used?

Double offset butterfly valves are used in oil & gas, chemical processing, HVAC, water treatment and other applications where higher pressure, temperature and longer seat life than concentric valves are needed.

Double Offset Butterfly Valves