High Performance Wafer Lug Type Double Eccentric Design Butterfly Valve Class 300
A High Performance Wafer Lug Type Double Eccentric Butterfly Valve is a heavy-duty industrial valve engineered for precise flow control and tight shut-off in high-pressure environments. With a Class 300 pressure rating, wafer lug mounting for flexible installation, and a double eccentric (offset) disc design, this valve delivers low torque operation, minimal wear, and long-term reliability in demanding fluid systems.
It is commonly used in industries where performance, durability, and safety are critical—including oil and gas, chemical processing, water treatment, and power generation.
Oil & Gas
Used for high-pressure shut-off and flow regulation in pipelines, refineries, and processing units. Offers reliable sealing and durability in demanding environments.
Chemical & Petrochemical
Ideal for handling corrosive, toxic, or aggressive media. Material options like stainless steel and duplex ensure safe, long-lasting performance.
Power Plants
Suitable for high-temperature and high-pressure applications such as steam, condensate, and feedwater lines. Ensures tight shut-off and energy efficiency.
Water & Wastewater Treatment
Provides dependable control for clean, treated, or contaminated fluids in municipal and industrial systems.
HVAC Systems
Used for modulating or isolating flow in large heating and cooling systems. Compact design makes installation easy in tight spaces.
Marine & Offshore
Corrosion-resistant and compact for use in shipbuilding, offshore platforms, and other space-constrained, harsh environments.
Double Eccentric Design
Reduces seat wear and ensures reliable, bubble-tight shut-off.
Wafer Lug Mounting
Easy to install and supports dead-end service with secure flange alignment.
High Pressure Rated (Class 300)
Handles pressures up to 740 psi, suitable for demanding industrial systems.
Low Operating Torque
Requires less actuation force, reducing energy and actuator costs.
Compact & Lightweight
Saves space and weight compared to gate or globe valves.
Corrosion-Resistant Options
Available in stainless steel, duplex, and special alloys for harsh environments.
Fire-Safe Designs Available
Complies with API 607 for flammable and critical service applications.
Versatile Actuation
Compatible with manual, electric, pneumatic, or hydraulic actuators.
| Parameter | Specification |
|---|---|
| Valve Type | High Performance Double Eccentric Butterfly Valve |
| Design | Double Offset (Eccentric) Disc |
| Mounting Type | Wafer Lug Type |
| Pressure Class | ANSI Class 300 (Up to 740 psi / 51 bar) |
| Size Range | 2” to 48” (DN50 to DN1200) |
| Body Material Options | WCB, CF8, CF8M, Duplex SS, Alloy 20 |
| Disc Material | SS316, Duplex, Aluminum Bronze, Hastelloy |
| Seat Material | PTFE, RTFE, Metal Seat (for high-temp service) |
| Temperature Range | -50°C to +425°C (-58°F to +800°F) |
| End Connection | Wafer Lug (ASME B16.5 Compatible) |
| Face-to-Face Standard | API 609 / ASME B16.10 |
| Leakage Class | Class VI (Bubble Tight) |
| Flow Characteristic | Modified Equal Percentage |
| Actuation Options | Manual (lever/gear), Electric, Pneumatic, Hydraulic |
| Standards Compliance | API 609, ASME B16.34, ISO 5752, API 607 (Fire Safe – optional) |
| Applications | Oil & Gas, Chemical, Power, Marine, HVAC, Water & Wastewater |
Double Eccentric (Offset) Design
This design reduces friction and wear between the valve disc and seat, ensuring smoother operation and longer valve life. It enhances efficiency and durability.
Wafer Lug Type Body
The wafer lug body design allows for easy mounting between flanges and is ideal for installations where dead-end service is required. It provides flexibility and secure sealing.
Class 300 Pressure Rating
With a pressure rating of up to 740 psi (51 bar), this valve is built to handle high-pressure systems, ensuring reliability in demanding industrial applications.
Precision Machined Disc & Seat
The precision machining of the disc and seat ensures bubble-tight shutoff and reliable performance, preventing leaks even under high-pressure conditions.
Wide Temperature Range
This valve operates effectively within a wide temperature range from -50°C to +425°C (-58°F to +800°F), depending on the seat material, making it versatile for different environments.
Versatile Material Options
It’s available in various materials, such as carbon steel, stainless steel, duplex, and specialized alloys, allowing it to withstand different fluid conditions and environmental factors.
Fire-Safe Design (Optional)
Compliant with API 607 standards, this feature offers fire-safe performance, ensuring safety in flammable applications. This is an optional feature for extra protection.
Bi-Directional Sealing
The valve can seal in both flow directions, offering flexibility for various system configurations and flow conditions. This feature provides better performance in diverse applications.
ISO 5211 Mounting Pad
The valve comes with an ISO 5211 mounting pad, which makes actuator installation straightforward without the need for additional brackets or adapters, simplifying setup.
Low Operating Torque
This valve design requires less actuation force, making it easier to operate. Smaller actuators can be used, reducing energy consumption and operational costs.
Compact, Lightweight Construction
Its compact and lightweight design saves space and reduces weight, making it ideal for installations in areas with limited space or weight restrictions.
