Double flange butterfly valve (TH-BTV-DF)

Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, DN50 to D1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, ABS, BV, Standards: EN 593, API609

Drawings & Dimensions

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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 / Bonded vulcanized Liner NBR/EPDM/VITON, PTFE/PFA full lined
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/SS316
Seat / lining	NBR/EPDM/VITON /PTFE/PFA
Taper pins	SS416/SS316
Bushing	BRASS/PTFE
O-ring	NBR/EPDM/VITON /PTFE
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

Related types of butterfly valves:

We have other types of butterfly valves: wafer butterfly vlave, Lug type butterfly valve, U flange butterfly valve, fluorine lined PTFE butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valves used in Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D,