Products

Concentric Wafer Butterfly Valve

Brief Details:
Material: WCB、QT450-10、HT200、HT250
Seal: Oil resistant nitrile rubber
Size: DN50 to DN1200
Application: water supply and drainage systems

Concentric Wafer Butterfly Valve

Concentric Wafer Butterfly Valve Introduction

Concentric wafer butterfly valve can be rotated to 90 degrees to open or close valve, having the advantages of compact construction, reliable seal, and long service life. This Concentric Wafer Butterfly Valve is widely used for water supply and drainage system to regulate or cut-off medium, in the chemical industry, food, and other industries.

Characteristic of Concentric Wafer Butterfly Valve
1. Utilizing dual eccentric structure and having a reliable seal.
2. Adopting stainless steel and oil resistant nitrile rubber, having a long service life.
3. Seal ring can be used on the valve body and disc, which is applicable to the 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 applied to the 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. The unique structure, convenient utilization.

Concentric wafer butterfly valve 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℃, fluoro-rubber: -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

Concentric Wafer Butterfly Valve Materials

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

Concentric Wafer Butterfly Valve 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

Concentric Wafer Butterfly Valve 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

Please note that the above specifications are “general specifications” that pertain to the majority of our products. These specifications should only be used for general, informational purposes. The measurement/size of the goods delivered may be different from the data in the above table, please check with us when order placed.

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