Triple Eccentric Wafer Lug Design Butterfly Valve
As an experienced ISO:9001:2015 certified manufacturer, we at SUN VALVES INDUSTRIES PVT. LTD. specialize in designing and producing high-performance Triple Eccentric Wafer Lug Type Butterfly Valves for critical flow control applications.
Our triple eccentric design eliminates friction between the disc and seat during operation, ensuring zero leakage, extended service life, and reliable performance under high pressure and temperature conditions.
Power Plants
Oil & Gas
Petrochemical
Water Treatment & Desalination
Marine & Offshore
Process Industries
Non-rubbing, frictionless closing and opening
Low torque operation, ideal for automation
Zero-leakage performance (Class V / Class VI tight shut-off)
Compact and lightweight for easy installation
Suitable for high-cycle operations and demanding industrial environments
Parameter | Details |
|---|---|
Design Type | Triple Offset / Triple Eccentric |
Body Type | Wafer Lug Design (Suitable for dead-end service) |
Face-to-Face Standard | API 609 / EN 558 |
Pressure Rating | PN 10 / PN 16 / PN 25 / PN 40 / Class 150 / Class 300 |
Size Range | 2” (50mm) to 48” (1200mm) and above |
End Connection | Wafer Lug Type (ASME B16.5, EN 1092, or custom) |
Disc Material | WCB, CF8, CF8M, Duplex SS, Super Duplex, Monel, Hastelloy |
Body Material | Carbon Steel, Stainless Steel, Alloy Steel, Super Duplex, Cast Iron |
Seat Type | Metal-to-Metal / Laminated Metal Seal (Stellite / Inconel optional) |
Leakage Class | Class V / Class VI (Zero leakage as per API 598) |
Stem Material | AISI 410 / 17-4PH / SS316 / Duplex |
Bearing Type | PTFE / Graphite / Self-lubricated Bushes |
Operation | Manual (Lever/Gear), Pneumatic, Electric, Hydraulic Actuator |
Temperature Range | -29°C to +425°C (material dependent) |
Fire Safe Design | Available as per API 607 / ISO 10497 |
Testing Standards | API 598 / EN 12266 |
Mounting Standard | ISO 5211 for actuator mounting |
Applications | Oil & Gas, Petrochemicals, Water Treatment, Power Plants, Marine, HVAC |
Triple offset design for zero leakage
Metal-to-metal seat for high temp/pressure
Wafer lug body – easy installation, dead-end capable
Low operating torque
ISO 5211 actuator mounting pad
Blowout-proof stem
Class V/VI shut-off as per API 598 / EN 12266
Self-lubricating PTFE/graphite bearings
Available in CS, SS, Duplex, special alloys
Fire-safe design (optional)
Replaceable seat and seal parts
CNC-machined for precision sealing
