Double Offset Butterfly Valve Manufacturer

Description
Technical
Standard
Q&A

DESCRIPTION

Design Features of Double Offset Butterfly Valve

The GMK Double Offset Butterfly Valve adopts a double eccentric structure where the valve stem axis and disc center are offset from the valve body and seat centerline.

This design allows the disc to move away from the seat immediately after opening, reducing friction and extending seat service life. During closing, the disc creates a reliable sealing contact to achieve bi-directional shut-off performance.

The high-performance butterfly valve design provides smooth operation, reduced torque requirements, and excellent flow regulation capability.

Advantages of High Performance Butterfly Valve

Double eccentric design reduces seat wear and improves valve life.
Low operating torque enables easy manual or automatic operation.
Compact and lightweight structure saves installation space.
Excellent sealing performance with zero leakage capability.
Suitable for high-pressure and high-temperature applications.
Available with PTFE, RPTFE, and PPL seat materials.
Provides both flow regulation and shut-off functions.
Reduced maintenance requirements and long service life.
Lower cost compared with similar size ball valves.

TECHNICAL SPECS

Size DN50-DN2000

Rating 150LB-900LB

Material Cast iron, ductile iron, WCB, LCB, LCC, WC5, WC6, WC9, CF8, CF8M, CF3, CF3M, B148, UB6, CN7M, CK20, etc

Connection Wafer type, lug type, flange

Operate Handwheel, gearbox, pneumatic

Supply ability 10000 piece/pieces per month

Port Wenzhou/shanghai

Payment terms L/C, D/A, D/P, T/T

Delivery time 7-10 Working day

Key Features of Double Offset Butterfly Valve

Double eccentric butterfly valve design
High performance flow control
Soft seat and metal seat options
>Bi-directional sealing capability
Zero leakage sealing performance
High-pressure and corrosion-resistant structure
ISO 5211 top flange for actuator mounting
Lightweight and compact construction
Low torque operation
Pin or pinless disc and stem connection
Optional fire-safe design
Suitable for automated operation

=”t9myor” data-start=”3161″ data-end=”3213″>Working Principle of Double Offset Butterfly Valve

A Double Offset Butterfly Valve operates by rotating the disc 90 degrees to control fluid flow. The double eccentric design moves the disc away from the sealing surface during opening, reducing friction and preventing unnecessary seat damage.

When the valve closes, the disc returns to the seat position and creates a tight seal. The offset design improves sealing performance and allows the valve to handle higher pressure conditions compared with conventional butterfly valves.

Technical Specifications

Design Standard: API 609, MSS SP-67

tart=”3775″ data-end=”3819″>Pressure Temperature Rating: ASME B16.34

tyle=”text-align: center;” data-start=”3821″ data-end=”3860″>Face-to-Face Dimension: ANSI B16.10

Flange Connection:
2″–24″ ASME B16.5
26″–42″ ASME B16.47

Butt Weld End: ASME B16.25

Testing Standard: API 598, ISO 5208

Size Range: 2″–60″ (DN50–DN1500)

Pressure Rating: Class 150–Class 600, PN6–PN100

Body Material:
Carbon Steel, Alloy Steel, WCB, LCB, WC6, WC9, 2205, 2507, Monel, 20#

Seat Material: PTFE, RPTFE, PPL

Connection Type: Wafer, Flanged, Lug

Temperature Range: -29℃ to 250℃

Standard

Applications of Double Offset Butterfly Valve

GMK butterfly valves are widely used in industries requiring reliable flow control and shut-off performance, including:

Oil and gas pipelines
Petrochemical plants
Power generation systems
HVAC systems
Water treatment facilities
Chemical processing industries
Industrial process pipelines
Energy infrastructure projects

section-id=”1su8cn4″ data-start=”4714″ data-end=”4761″>Why Choose GMK Double Offset Butterfly Valve?

style=”text-align: center;” data-start=”4763″ data-end=”4920″>GMK manufactures high-performance butterfly valves with advanced engineering technology, strict quality control, and compliance with international standards.

Our butterfly valves provide reliable sealing, low operating torque, excellent durability, and long-term performance for critical industrial applications.

Q&A

Can we order goods from you directly?

Yes, we look forward to receiving your order. However, please note our minimum purchase quantity. If you require smaller quantities we will be happy to arrange an individual delivery. We would be delighted to assist you.

Can I get a discount?

This depends on the specific situation, you can call directly to consult.

Inquire with us directly