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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”

DN Range:

DN 15 to 1200

PN Range:

PN 10 to PN 40

Pressure Rating:

Class 150 / 300

Temperature Range:

As per trim and seat material

End Connections:

Wafer, Lug, Flanged

  • 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.

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