Double center line flange butterfly valve

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Double center line flange butterfly valve      Standards:   1) Design and manufacture: API609   2) Face to face/end to end: ANSI B16.10   3) Flange dimensions: ANSI B16.5a   4) Butt welding dimensions: ANSI B16.25   5) Pressure temperature rating: ANSI B16.34   6) Inspection and test: API598     Product parameter:  

Nominal pressure (MPa)			1.0		1.6
Nominal diameter(mm)			50-1200		50-1200
Test pressure	Shell	1.5		2.4
(MPa)	Seal	1.1		1.76
Applicable temperature			-15~+150
Applicable medium			Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids, Alkalis, etc.
Operating mode			manual, worm gear, pneumatic, electric, etc.

     Main materail:    

Part name	Materials
body	cast iron, ductile iron, carbon steel, stainless steel, ALB, Brass, Bronze
seat	EPDM, PTFE, NBR, Viton, Buna, Hypalon, Neoprene
disc	cast iron, ductile iron, carbon  steel, stainless steel, ALB, monel
stem	stainless steel, carbon steel

 

Bushing	PTFE, Lubricating
O-ring	EPDM, Buna, Hypalon, Viton, NEoprene

    Brief Introduction:   Butterfly valve is mainly consisted of body, stem, disc, seat and driver(lever, gearbox, pneumatic and electric Actuator) and so on. On off and controlling flow of valve are made by turning stem and disc together.     Characteristics of Product:   1.Small in size and light in weight and maintaince. It can be mounted wherever needed. 2.Simple, compact structure, quick 90 degree on-off operation. 3.Disc has two-way bearing, perfect seal, without leakage under the pressure test. 4.Flow curve tending to straight-line. Excellent regulation performance. 5.Various kinds of materials, applicable to different medium. 6.Strong wash and brush resistance and can fit to bad working condition. 7.Center plate structure, small torque of open and close. 8.Long service life. Standing the test of ten thousands opening and closing operation.              Flow Chart                 Contact