Product Description

Double flange butterfly valve (TH-BTV-DF)

Area of application

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

Data sheet of Double flange Butterfly valve

TYPE:	Double flanged
SIZE & CONNECTIONS:	DN50 to D1200
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 EN 1092-2 PN10
• Face to Face dimensions Conform to EN558 series
• Topwork’s dimensions Conform to ISO5211
• Testing Conform to API598、EN12266-1

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 flange butterfly valve features

• Simple structure and easy operation
• Easy installation and good sealing
• Long service life and high reliability
• Good interchangeability of parts and cost saving
• Wafer type butterfly valve with concentric design
• Using backless structure, Rubber fusion bonded on valve body
• Replaceable, resilient seat
• Streamlined disc, one-piece stem
• Approved and registered by VdS, DVGW

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