Product Description

Double eccentric butterfly valve (TH-BTV-DE)

Area of application

Marine industry, Water supply & drainage, fire fighting, shipbuilding, water treatment and other systems

Data sheet of Double eccentric Butterfly valve

TYPE:	Double eccentric
SIZE & CONNECTIONS:	DN1400 to D3800
MEDIUM:	Air, Inert Gas, Oil, Seawater, Waste water, Water
MATERIALS:	Cast Iron / Ductile Iron/ Carbon Steel / Stainless Steel / Alu Bronze
PRESSURE RATING:	PN10, PN16
TEMPERATURE:	-30°C to 200°C
SEAT/LINING:	Replaceable Liner / Bonded Liner NBR/EPDM/VITON
CERTIFICATES & APPROVALS:	DNV-GL, Lloyds, DNV, ABS, BV Type Approval 3.1 & 3.2 Cert (on request)

Standards

• Design and Manufacture Conform to EN 593、 API609
• Flange dimensions Conform to EN2632
• Face to Face dimensions Conform to DIN3202 F4
• Topwork’s dimensions Conform to ISO5211
• Testing Conform to ISO5208

Material of Parts

PART NAME	Material
BODY	ASTM A536 65-45-12/ASTM A126 B, EN-JL 1040 (GG-25), EN-JS 1030 (GGG-40), EN-JS 1049 (GGG 40.3), Stainless steel (1.4408), Alu-Bronze
DISC / PLATE	DI+NI,CF8/CF8M,C954/C958 EN-JS 1030 (GGG-40) Stainless steel (1.4408)
SHAFT / STEM	SS431/SS420/SS410/SS304
SEAT / LINING	NBR/EPDM/VITON
TAPER PINS	SS416/SS316
BUSHING	BRASS/PTFE
O-RING	NBR/EPDM/VITON
KEY	STEEL

Actuation

• Worm-gear/hand-wheel
• Electric-actuator
• Pneumatic-actuator
• Hydraulic-actuator

Double eccentric butterfly valve features

• Double eccentric butterfly valve is also called high-performance butterfly valve, which is mainly used for water drainage in water plants, power plants, steel smelting, chemical industry, water source engineering, environmental facilities construction, etc.
• It is especially suitable for waterway pipelines as regulating and shut-off equipment.
• Compared with the center-line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, longer life and better stability.
• Reasonable design, compact structure, easy assembly and disassembly, and easy maintenance.
• The eccentric structure is adopted to reduce the friction of the sealing ring and prolong the service life of the valve.
• Completely sealed with zero leakage. Can be used in ultra-high vacuum conditions
• Replace the valve plate seal ring, butterfly plate, rotating shaft and other materials, applicable to multiple media and different temperatures

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