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Marine spiral flange butterfly valve
Product model: GB / T3036-1994
Nominal diameter: DN50 ¡« 350mm
Nominal pressure: PN0.6 ~ 1.6Mpa
Applicable media: air, sea water, steam, gas, oil, etc
Applicable temperature: ¡Ü 80 ¡æ
Working temperature: ¡Ü 80 ¡æ
Connection type: flange
Main materials: cast iron, cast steel, stainless steel chromium, molybdenum steel, alloy steel
Design standard: GB / T3036-1994
Flange connection size: GB / T9113.1-2000; GB / T9113.2-2000; GB / T9115.1-2000; GB / T9115.2-2000
Pressure test: GB / T 13927-1992; JB / T 9092-1999
Product details

USES and features

Novel design, reasonable, unique structure, light weight, easy to operate, quick opening and closing;

Marine screw flange butterfly valve in addition to the adjustment and closure function, compensation pipe temperature difference produced by the expansion and contraction function, but also for the installation, replacement, maintenance to provide convenience;

The sealing part can be adjusted and replaced, and the sealing performance is reliable.


With a standard

Flange connection dimensions: GB/ t9113.1-2000;GB/T9113.2-2000;GB/T9115.1-2000;GB/T9115.2-2000

Pressure test: GB/T 13927-1992;JB/T 9092-1999


Main technical parameters

Nominal diameter DN 50¡«2000
Nominal pressure PN 0.6 1.0 1.6
Test pressure Strength experiment 0.9 1.5 2.4
Sealing experiment 0.66 1.1 1.76
Airtight seal test 0.6 0.6 0.6
Service temperature ¡Ü80¡æ
Adaptive media Air, sea water, steam, gas, oil, etc
Driving form Manual, worm and worm gear drive, air drive, electric drive


Material of main parts

Part name Material
The body Cast iron, cast steel, stainless steel chromium, molybdenum steel, alloy steel
Disc Cast steel, alloy steel, stainless steel, chrome molybdenum steel
Seal ring Rubber, polytetrafluoroethylene, polyurethane, stainless steel
Stem 2Cr13, stainless steel, chrome molybdenum steel
Telescopic tube Cast iron, cast steel, stainless steel, chrome molybdenum steel
Packing Flexible graphite



Marine screw flange butterfly valve GB/ t3036-94 is suitable for ship, medicine, chemical industry, petroleum, electric power, light textile, paper and other water supply and drainage, gas pipeline for the regulation of flow and the role of closure medium, with the function of compensating pipeline expansion and contraction.


Its main features are:

Design standard: GB/ t3036-1994

Marine center flange butterfly valve, spiral type production standards: GB/CB, JIS, ANSI, DIN, nominal pressure: 5 k, 10 k, 16 k, PN, 6 pn1, 0 pn16, ANSI150, LB300LB, nominal size (48 "), the valve body material: ductile iron QT450, cast steel, stainless steel SUS ZG230-450, bronze BZ, valve plate: SUS stainless steel, bronze BZ, seat: nitrile butadiene rubber, NBR, teflon:PTFE, EPDM, FKM.





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