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Home > Product Division > Valves > Butterfly Valve > Eccentric

Eccentric, Butterfly Valve

Metaval’s Eccentric (Single Offset) Butterfly Valve is a performance upgrade from the concentric design, built to reduce seat wear and improve sealing reliability. The disc shaft is offset from the valve centreline, minimizing friction between the disc and seat during opening/closing cycles. This results in extended service life and lower torque requirements, making it suitable for more demanding applications.

Size Range

2” to 48”

DN Range:

50 to 1200

PN Range:

PN 10 to PN 40

Size Range:

2” to 48”

Pressure Rating:

Class 150 / 300

DN Range:

DN 15 to 1200

Temperature Range:

As per trim and seat material

End Connections:

Wafer, Lug, Flanged

PN Range:

PN 10 to PN 40

Valve Design: EN 593, API 609, AWWA C504, ISO 5752
Material Standards: EN 16668
Face-to-Face: ISO 5752 / EN 558 / API 609 / ASME B16.10
Top Flange: ISO 5211
Flange Drilling: EN 1092-1, AS 4087, AS2129, ASME B16.5/B16.47, BS 5155
Testing Standards: EN 12266-1, API 598

Body: Ductile Iron, WCB, CF8, CF8M, CF3M, Duplex, Super Duplex
Disc: Stainless Steel, Duplex, Super Duplex, Monel, Inconel
Seat: Soft Seated (EPDM, NBR, PTFE, Viton)
Stem: AISI 410, F304, F316
Gasket: Spiral Wound SS / Graphite / PTFE

Reduced Friction Design: Disc disengages from seat during rotation
Low Torque Operation: Ideal for automation
Resilient Seated: Ensures tight shut-off with zero leakage
Longer Seat Life: Minimizes mechanical wear
Compact Construction: Lightweight yet rugged

All Metaval valves undergo complete QA/QC testing, including:

Hydrostatic and Pneumatic Pressure Tests
Helium / Nitrogen Seat Leak Tests
PMI and UT / RT where applicable
DPT and Surface Finish Tests
Hardness, Tensile, and Dimensional Verification
Functional Actuation Testing

Water and Wastewater Systems
HVAC and Cooling Water Systems
Chemical Processing
Mining Slurries
Utility and Firefighting Systems
General Industrial Service

Slurries and Suspended Solids
Treated and Raw Water
Mild Acids and Alkalis
Low-Pressure Steam
Gases and Vapors

CE Certified
PED (2014/68/EU)
ISO 9001:2015 
ISO 14001:2015 
ISO 45001:2018 

Documentation

Complete In-House Manufacturing Control

From forging and casting to machining, assembly, and testing — every step is managed under one roof to ensure consistent quality, faster lead times, and zero compromise.

Contact Us

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