Description

Technical Parameters

Introduction

The double offset butterfly valve is a high-performance industrial valve available in bulk and customizable versions for controlling the flow of liquids, gases, and steam.

Parameter

Parameter	Specification / Options
Model	PCB100 or OEM
Size Range	2" ~ 80"
Pressure Range	PN6 / PN10 / PN16 / PN25, 125LB / 150LB
End Connection	Double Flange / Lug / Wafer
Bore	Full bore
Operation	Manual operation, Actuated operation
Body Material	Cast Iron, Ductile Iron, Carbon steel, Stainless steel, etc.
Disc Material	Cast Iron, Ductile Iron, Carbon steel, Stainless steel, etc.
Seat Material	EPDM, NBR, PTFE, VITON, SILICON
Basic Design Standard	API 609, EN 593
Face-to-Face Standard	ASME B16.10, EN 558
Flange End Standard	ASME B16.5 (≤24"), ASME B16.47 Series A/B (≥26"), EN1092
Test and Inspection	ASME B16.47 Series A or B
Fire-Safe Test	API 607
Corrosion Standard	Manufacturing to NACE latest version on request
Notes	Additional sizes and pressure classes available upon request

Features of Double Offset Butterfly Valve

Wear-resistant

The double offset butterfly valve features a carbon steel or 316 stainless steel valve body with a hardened valve disc surface, allowing for over 10 years of use in particulate media environments.

Precise Sealing

The double eccentric valve disc fits tightly against the valve seat, with CNC machining tolerances of ±0.2 mm and a leakage rate of less than 0.01%.

High Temperature Resistance

The valve body is made of heat-resistant alloy, enabling stable operation from -40°C to 200°C.

Quick Opening And Closing

The valve can be fully opened or closed with a 90° rotation, improving system response speed.

Multi-media Applicability

Suitable for water, oil, steam, and chemical fluids.

Customization

Customizable Feature	Options / Description
Valve Body Material	Carbon steel, 304/316 stainless steel, or corrosion-resistant alloys
Valve Disc Design	Double eccentric or special-shaped valve discs
Valve Seat Material	EPDM, PTFE, VITON, or metal seats
Connection Method	Flange, wafer, or welded connections
Actuation Method	Manual, gear, electric, or pneumatic actuators
Valve Size	Standard or special pipe diameters
Surface Finish	Powder-coated, polished, or hard chrome plated

FAQ

Q: Which industries is it suitable for?

A: It can be used for fluid regulation in the petroleum, chemical, power, water treatment, and mining industries.

Q: Can the valve regulate flow?

A: Yes. The double offset butterfly valve can be partially opened for precise flow regulation.

Q: Is installation complicated?

A: No. It has a compact structure, supports flange or wafer mounting, and is quick to install.

Q: How frequently should it be maintained?

A: The double offset butterfly valve is made of wear-resistant materials, and typically requires inspection of the valve seat and disc only every 3–5 years.

Q: How to clean the valve?

A: The valve disc and seat are removable and can be cleaned with water or a suitable solvent.

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