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

Worm Gear Operated Lug Butterfly Valve

Size Range: DN50-DN600

Pressure: PN16

Body Materials: CI/DI/WCB/CF3/ CF3M/CF8/ CF8M

Seat Materials: NBR/EPDM/PTFE/SI

Disc Materials: DI/WCB/CF3/ CF3M/CF8/CF8M/ C954

Stem Materials: 45#/410/ 2Cr13/Cr13/304/316


Adoptive Standards:

Worm gear operated lug butterfly valve:
Valve Design: API 609, MSS SP-67
Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1
Pressure Test: API 598
Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16
Top Flange: ISO5211

Product Advantage:

1.The valve body and disc is 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.

3.The electric device is compact and beautiful in appearance, with a volume weight equivalent to only 1/3 of that of similar products, a large reduction in required space, light weight, and easy installation.

4.Seat uses standard EPDM rubber, making the butterfly valve's resilience and tension super stable and reliable, opening and closing more than 10,000 times without leakage.

5.The valve body uses an electrostatic powder thermal spraying process with a spray thickness of 250μm. The valve body is heated at 200°C for 3 hours, and the powder is cured at 180°C for 2 hours. After natural cooling, the surface adhesion is increased by 2 times than that of the ordinary powder, making it more environmentally friendly and weatherproof. Higher, to ensure that the valve body is not discolored for 36 months.

6.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.

7.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.The Gende intelligent detection equipment integrates standard data measurement and pressure detection. Each inspection report is automatically generated. Each data and report is saved for 5 years, ensuring that the factory qualification rate reaches 100%.

9.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:

Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
Special Test: On request, any other test can be carried out according to special instruction by client.



DN NPS(inch) L ΦA N-M ΦA N-M
DN50 2" 43 125 4-M16 120.7 4-5/8"
DN65 2.5" 46 145 4-M16 139.7 4-5/8"
DN80 3" 46 160 8-M16 152.4 4-5/8"
DN100 4"  52 180 8-M16 190.5 8-5/8"
DN125 5" 56 210 8-M16 215.9 8-3/4"
DN150 6" 56 240 8-M20 241.3 8-3/4"
DN200 8" 60 295 12-M20 298.5 8-3/4"
DN250 10" 68 355 12-M24 362 12-7/8"
DN300 12" 78 410 12-M24 431.8 12-7/8"
DN350 14" 78 470 16-M24 476.3 12-1"
DN400 16" 102 525 16-M27 539.8 16-1"
DN450 18" 114 585 20-M27 577.9 16-11/8"
DN500 20" 127 650 20-M30 635 20-11/8"
DN600 24" 154 770 20-M33 749.3 20-11/4"
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