Name: Butt Welding (BW) Metal Seal Butterfly Valve
Usage & Features lt is appilcable to the pipelines of high temperature,high pressure,and heat preservation as the function to open,close or adjusting flow.Main features details as below: 1.Compact structure,small volume,lightweight,flexible operation,convenient using. 2.With three-eccentric flexible and multi-performance can reach zero leakage. 3.The kind of valve hasn′t flanges ,which make the pipelines and jacket-in stalled great convenient and beautiful. 4.There are advantages with high temperature and high pressure resistant,corrosion resistant,friction resistant,ect. · Method Worm gear,pneumatic and electric drive ·Applicable Standard Welded dimensions：GBl2224；ANSI B16.25；DIN2559 Face-to-face：GB／T12221-1989;APl609 Pressure test：GB/Tl3927-1992;APl598 ·Main Technical Parameter
Nominal diameter
DN(mm)
50-700
Nominal pressure
PN(MPa)
0.6
1.0
1,6
2.5
4.0
Ps(MPa) Test pressure
lntensity Test
0.9
1.5
2.4
3.75
6.0
Seal test
0.66
1.1
1_76
2.75
4.4
Air Test
0.6
0.6
0.6
0.6
0.6
applicable Medium
Water,steam,oil products,corrosive acid,etc.
Applicable Temperature
Carbon steel: -29?25ℿStainless steel: 40?00?/P>
·Material of Main Parts
Parts name
Material
Body
Cast steel,stainless steel,Cr-Mo steel,special material
Disc
Cast steel,alloy steel(Cr plated),stainless steel,Cr-Mo steel,special material
