Concentric Wafer Butterfly Valve

Concentric Wafer Butterfly Valve Click to view the big picture
Short Description
 Model No.: D71X    Hits: 1533
China Butterfly Valve manufacturer Xinhai offers Concentric Wafer Butterfly Valves in WCB, QT450-10, HT200, HT250, DN50-DN1200, 0.6MPa/1.0MPa/1.6MPa.

Key Specifications / Features

Concentric wafer butterfly valve, manufactured by Xinhai, can be rotated to 90 degree to open or close valve, having the advantages of compact construction, reliable seal and long service life. The valve is widely used for water supply and drainage system to regulate or cut-off medium, in chemical industry, food and other industries.
 
Characteristic of Concentric Wafer Butterfly Valve
1. Utilizing dual eccentric structure and having reliable seal.
2. Adopting stainless steel and oil resistent nitrile rubber, having long service life.
3. Seal ring can be used on the valve body and disc, which is applicable for different medium as required. 
4. Frame structure disc, having the advantages of high strength, large flow area and low flow resistance. 
5. The whole valve uses baking finish which can resist corrosion effectively. Otherwise, changing seal materials, the valve can be applicable for different medium.
6. The vale has dual eccentric structure. It can be installed in any position without the limitation of medium flow and space.
7. Unique structure, convenient utilization. 
 
Parameter
Nominal diameter(mm) 50~2000 50~1600
Nominal Pressure PN(MPa) 0.6 1.0 1.6
Seal test(MPa) 0.66 1.1 1.76
Shell test(MPa) 0.9 1.5 2.4
Applicable temperature Nitrile rubber: -40℃~90℃, fluororubber: -20℃~200℃
Applicable medium Water, air, gas, oil and other weak corrosive fluid
Leakage rate GB/T13927-92
Actuation mode Worm gear, electric, pneumatic, electrohydraulic

Materials 
Components  Materials 
Valve body WCB、QT450-10、HT200、HT250
Disc  WCB、QT450-10、HT200、HT250
Valve shaft 2Cr13
Seal ring Oil resistent nitrile rubber
packing Flexible graphite 

Implementation Standards
Manufacturing standard GB/T 122387-89
Flange standard GB9113-2000、GB17241.6-1998
Face to face  standard GB12221-89
Inspection standard GB/T 13927-92

Main Dimensions                                                       Unit: mm 
DN L H HO A B 0.6MPa 1.0MPa 1.6MPa
DO n-d DO n-d DO n-d
50 43 63 306 180 200 110 4-14 125 4-18 125 4-18
65 46 70 321 180 200 130 4-14 145 4-18 145 4-18
80 46 83 346 180 200 150 4-18 160 8-18 160 8-18
100 52 105 387 180 200 170 4-18 180 8-18 180 8-18
125 56 115 411 180 200 200 8-18 210 8-18 210 8-18
150 56 137 447 270 280 225 8-18 240 8-22 240 8-22
200 60 164 572 270 280 280 8-18 295 8-22 295 8-22
250 68 206 646 270 280 335 12-18 350 12-22 355 12-26
300 78 230 738 380 420 395 12-22 400 12-22 410 12-26
350 78 248 761 380 420 445 12-22 460 16-22 470 16-26
400 102 289 877 450 470 495 16-22 515 16-26 525 16-30
450 114 320 938 480 490 550 16-22 565 20-26 585 20-30
500 127 343 993 480 490 600 20-22 620 20-26 650 20-33
600 154 413 1131 480 490 705 20-26 725 20-30 770 20-36
700 165 478 1476 640 660 810 24-26 840 24-30 840 24-36
800 190 525 1533 640 660 920 24-30 950 24-33 950 24-39
900 203 585 1655 750 860 1020 24-30 1050 28-33 1050 38-39
1000 216 640 1765 850 900 1120 28-30 1160 28-36 1170 28-42
1200 254 755 1995 850 900 1340 32-33 1380 32-39 1390 32-48

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