KNIFE GATE VALVE WB14

Stafsjö’s knife gate valve WB14 is bi-directional tight and can therefore be installed into a pipe system independent of pressure direction. A fully lugged valve body design and
integrated flange gaskets makes it easy to install and also allows end-of-pipe installations. WB14 has a full bore with no cavity which gives excellent flow characteristics and this makes it suitable for fluids, sludge and liquids with solids in suspensions such as water, sewage and bio mass.

The WB14 has a robust coated and fully lugged valve body in nodular iron. It is equipped with a gate in stainless steel, which has a polished edge in order to minimize friction and to lower required operation force. The valve is supplied with a sealing profile in Nitrile or EPDM and this is reinforced with a steel core. The gland box is equipped with Stafsjö’s box packing TwinPack™, to secure that no media reaches the surrounding environment. The valve is modular designed and it can easily be supplied with different types of actuators and accessories.

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Full Product Range – Technical Information

Main Dimensions

Dimensions (mm)
DN A B6) B7) C D E F G H J K L N O P Q R Weight8)
50 50 43 48 90 86 200 59 358 465 117 629 227 149 499 128 381 419 7
65 65 46 46 105 86 200 66 382 490 131 654 252 147 492 153 407 511 8
80 80 46 51 120 86 200 88 395 512 176 677 275 144 479 176 429 598 12
100 100 52 52 144 86 200 101 430 547 206 712 310 146 635 17 472 653 15
125 125 56 56 169 86 250 112 470 685 236 752 350 137 591 57 512 846 18
150 150 56 56 192 86 250 130 514 730 260 794 392 129 554 99 554 1039 22
200 200 60 70 256 151 315 154 622 866 327 818 489 217 633 247 716 1117 37
250 250 69 69 307 151 315 153 718 1050 392 914 579 – – – – – 55
300 300 78 78 354 151 315 212 822 1146 462 1059 675 – – – – – 71
350 350 78 78 430 180 400 258 880 1470 517 1228 783 – – – – – 115
400 400 – 89 482 180 400 288 977 1567 576 1375 880 – – – – – 155
450 450 – 89 532 250 520 314 1153 1921 628 1736 1134 – – – – – 230
500 500 – 114 586 250 520 340 1225 1893 680 1706 1106 – – – – – 270
600 600 – 114 686 250 520 409 1436 2191 818 2018 1317 – – – – – 400