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Concentric Butterfly Valves

Concentric Butterfly Valves

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Built for Reliability

OG Valves Concentric resilient-seated butterfly valve is a soft-seated valve with a fully rubber-lined single-piece body and centric disc construction that allows minimum flow restriction.

The bonded body liner, which also functions as the soft seat, offers 100% bi-directional sealing against full-rated pressures up to 20 bar for Class 150.

The wafer-style body has a multi-flange design capable of installing between pipe flanges of multiple flange standards.

Available with a wide selection of bonded vulcanised elastomer seat materials for a variety of service media. 

OG Models Offered

Concentric Butterfly Valve – Lugged type

Concentric Butterfly Valve – Wafer type

Concentric Butterfly Valve – Semi-Lugged type

Concentric Butterfly Valve – Double Flanged type

Benefits

  • Disc design ensures favourable flow characteristics and low-pressure drop
  • Low torque requirements
  • Takes up minimal space in piping systems
  • Lighter weight compared to other valve types
  • Easy to integrate into existing systems
  • Can be manually operated / easily automated
  • Simple disassembly and reassembly
  • Good flow control capabilities
  • Suitable for various media (liquids, gases, slurries)

Contact our engineering team today to discuss your specific valve requirements and discover how our advanced butterfly valve solutions can enhance your asset’s safety, reliability, and performance.

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Material Grades

Body

CI/ SGI / WCB / CF8 /CF8M / CD3MWCuN / B148 C95800

Disc

SGI / WCB / CF8 /CF8M / CD3MWCuN / B148 C95800

Seat

HT.NITRILE, EPDM, VITON, NEOPRENE, HYPALON, SILICON

Shaft

AISI 410 /SS 316 /SS 316 SH /17-4 PH / UNS S32760 / K500

Range

Size

DN40 (1.5”) TO DN4000 (160”)

Connection Type

Lugged, Wafer, Semi-lugged, Double Flanged

Pressure Class

ANSI 125#, 150# / DIN PN 10,16, 20 / JIS 5K, 10K, 16K

Operation
Lever, Worm gear, Pneumatic actuator, Electric actuator,   Hydraulic actuator
Temperature
-46oC to 200oC

Design

ASME B16.34, API 609 Category A, BS EN 593, JIS F 7480, JIS B 2032

Industry Sectors

  • Oil & Gas Offshore platforms
  • FPSO
  • Refineries
  • Storage terminals
  • Wastewater treatment plants
  • Desalination facilities
  • Shipside valves
  • Process water systems
  • Seawater applications
  • Ballast systems
  • Cooling water lines
  • Fire protection systems
  • Pharmaceutical manufacturing
  • Ballast valves

Discuss Your Project with Our Valve Specialists

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