ProductPRODUCTS 
Wafer Type Pinless Vulcanized Seat Butterfly KF-3100
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Product Feature
Centerline structure, pinless double half shaft design.
Disc has two_way bearing, no installation direction requirements.
End flange can meet different connection standards at the same timeDN50mm_300mm.
Holes for the end flange is drilling holesDN350mm_600mm.
Good performance of vulcanized seat, highly stretchable and low torque.
Square and short neck, easy to stick scutcheon and cost saving.
Easy installation, don't need to add flange gasket.
Technical Parameters
Nominal diameter(mm) | 50～600 | 50～600 | ||
Nominal pressure(Mpa) | 1.0 | 1.6 | ||
Testing pressure | Shell(Mpa) | 1.5 | 2.4 | |
Seal(Mpa) | 1.1 | 1.76 | ||
Suitable temperature | -40°C～200°C | |||
Suitable medium | Drinking water、sewage、seawater、food、medicines、gas、oil and acid | |||
Main Raw Material
Body | Disc | Stem | Seat | Actuator |
Ductile iron | Plated ductile iron | Stainless steel | EPDM/NBR | lever |
CF8 | WRAS-EPDM | gearbox and handwheel | ||
CF8M | Viton | Electric | ||
Aluminum bronze | customised | Silicon | Pneumatic | |
PS：1. Vulcanized seat 2.Pinless disc | ||||
Reference Standard
Design standard | API 609 | |||
Testing standard | API 598 | |||
Top flange standard | ISO5211 | |||
End flange standard | DIN PN10 / PN16、ANSI 125# / 150#、BS4504 PN10 / PN16、JIS B2220 10K | |||
Face to face standard | API 609、EN558-1 20 Series、BS5155、DIN3202 K1 | |||
Overall Dimension and Weight
Size | A | B | D | Top Flange | ΦE | Weight(kg) |
DN50 | 189 | 126 | 43 | F07 | 90 | 2.60 |
DN65 | 202 | 133 | 46 | F07 | 90 | 2.80 |
DN80 | 238 | 152 | 46 | F07 | 90 | 3.31 |
DN100 | 276 | 170 | 52 | F07 | 90 | 5.02 |
DN125 | 296 | 181 | 56 | F07 | 90 | 6.40 |
DN150 | 324 | 196 | 56 | F07 | 90 | 7.81 |
DN200 | 398 | 238 | 60 | F10 | 125 | 12.00 |
DN250 | 448 | 258 | 68 | F10 | 125 | 25.00 |
DN300 | 535 | 300 | 78 | F10 | 125 | 39.00 |
Size | A | B | D | Top Flange | ΦE | DIN PN10 | DIN PN16 | ANSI 150# | Weight(kg) | |||
4-Φd | ΦD | 4-Φd | ΦD | 4-Φd | ΦD | |||||||
DN350 | 578 | 315 | 78 | F10 | 125 | 4-22 | 460 | 4-26 | 470 | 4-28.4 | 476.2 | 55.00 |
DN400 | 660 | 350 | 102 | F14 | 175 | 4-26 | 515 | 4-30 | 525 | 4-28.4 | 539.7 | 79.00 |
DN450 | 710 | 375 | 114 | F14 | 175 | 4-26 | 565 | 4-30 | 585 | 4-31.8 | 577.8 | 105.00 |
DN500 | 790 | 415 | 127 | F14 | 175 | 4-26 | 620 | 4-33 | 650 | 4-31.8 | 635.0 | 130.00 |
DN600 | 900 | 465 | 154 | F16 | 210 | 4-30 | 725 | 4-36 | 770 | 4-35.1 | 749.3 | 186.00 |
