Worm Gear Operated Flange Butterfly Valve1
Worm Gear Operated Flange Butterfly Valve2
Worm Gear Operated Flange Butterfly Valve3
Worm Gear Operated Flange Butterfly Valve4

Worm Gear Operated Flange Butterfly Valve


Pressure: 5K/10K/150LB


Seat Materials: NBR/EPDM/PTFE/SI





Worm gear operated flange butterfly valve:
Single Eccentric Disc-Shaft
Anti-Blow Out Stem
Fire safe Design
Low Friction Body Seat
Zero Leakage

Adoptive Standards:

Worm gear operated flange butterfly valve:
Valve Design: API 609, MSS SP-67
Pressure Test: API 598
Top Flange: ISO5211

Product Advantage:

1.The valve body and disc are all adopted QT450-10 material, the ball rate is above grade 3, the mechanical performance is fully up to standard, the tensile strength is 450Mpa, and the elongation rate is more than 10%. It is not easy to crack or freeze.

2.The valve body is solid body, the same caliber weight is heavier than other manufacturers.



5.Introducing the PE heat-shrinking plastic packaging technology of electronic products. Each of the products of Bundor is individually wrapped with a heat-shrinkable film and has a built-in desiccant. The air dust is isolated to facilitate storage and avoid corrosion caused by moisture.

6.Every Bundor product has its own two-dimensional code identification from the accessories to the finished product, the unique ID number, to ensure that the product can be traced.


8.Bundor brand products are underwritten by Pacific Insurance Company with 10 million quality. The warranty is 2 years. Pay two back if one bad within two years. The quality of the product is unconditional.

Standard Test:

Seat Test: 1.1 times the working pressure with water.



DN NPS（Size） A B C L
DN50 2" 69.5 126.5 32 108
DN65 2.5" 72 136 32 112
DN80 3" 88 146 32 114
DN100 4"  96.5 158 32 127
DN125 5" 115 179 32 140
DN150 6" 126 197 32 140
DN200 8" 161 230 45 152
DN250 10" 199 271 45 165
DN300 12" 215 305 45 178
DN350 14" 261 350 45 190
DN400 16" 290 381 51 216
DN450 18" 307 392 51 222
DN500 20" 340 441 57 229
DN600 24" 396 500 70 267
DN700 28" 496 567 66 292
DN800 32" 543 641 66 318
DN900 36" 584 692 118 330
DN1000 40" 638 735 142 410
DN1200 44" 763 917 150 470
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