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ASME B16.5 RF
De Raised Face-flens is het meest voorkomende type dat wordt gebruikt in procesinstallaties en is gemakkelijk te identificeren. Het wordt een verhoogd vlak genoemd omdat de pakkingoppervlakken boven het boutcirkelvlak zijn geheven.
Beschrijving
Verhoogd gezicht (RF)
De Raised Face-flens is het meest voorkomende type dat wordt gebruikt in procesinstallaties en is gemakkelijk te identificeren. Het wordt een verhoogd vlak genoemd omdat de pakkingoppervlakken boven het boutcirkelvlak zijn geheven. Dit vlaktype maakt het gebruik van een brede combinatie van pakkingontwerpen mogelijk, waaronder plaattypes met platte ringen en metalen composieten zoals spiraalgewonden en dubbelwandige types.
Het doel van een RF-flens is om meer druk te concentreren op een kleiner pakkingsgebied en daardoor het drukvasthoudend vermogen van de verbinding te vergroten. Diameter en hoogte zijn in ASME B16.5 gedefinieerd, per drukklasse en diameter. De drukklasse van de flens bepaalt de hoogte van het opstaande vlak.
De typische flensafwerking voor ASME B16.5 RF-flenzen is 125 tot 250 pin Ra (3 tot 6 pm Ra).


Klas | Maat | Afmetingen (mm) | Bout | L1 | L2 | ||||||
DN | NPS | D | D1 | D2 | b | d | Nummer | Diam(in) | |||
Klasse 150 | 15 | 1/2 | 90 | 60.3 | 35 | 10 | 16 | 4 | 1/2 | 55 | 50 |
20 | 3/4 | 100 | 69.9 | 43 | 10.5 | 16 | 4 | 1/2 | 65 | 50 | |
25 | 1 | 110 | 79.4 | 51 | 11.5 | 16 | 4 | 1/2 | 65 | 55 | |
32 | 1-1/4 | 115 | 88.9 | 64 | 13 | 16 | 4 | 1/2 | 70 | 55 | |
40 | 1-1/2 | 125 | 98.4 | 73 | 14.5 | 16 | 4 | 1/2 | 70 | 65 | |
50 | 2 | 150 | 120.7 | 92 | 16 | 19 | 4 | 5/8 | 85 | 70 | |
65 | 2-1/2 | 180 | 139.7 | 105 | 18 | 19 | 4 | 5/8 | 90 | 75 | |
80 | 3 | 190 | 152.4 | 127 | 19.5 | 19 | 4 | 5/8 | 90 | 75 | |
100 | 4 | 230 | 190.5 | 157 | 24 | 19 | 8 | 5/8 | 90 | 75 | |
125 | 5 | 255 | 215.9 | 186 | 24 | 22 | 8 | 3/4 | 95 | 85 | |
150 | 6 | 280 | 241.3 | 216 | 25.5 | 22 | 8 | 3/4 | 100 | 85 | |
200 | 8 | 345 | 298.5 | 270 | 29 | 22 | 8 | 3/4 | 110 | 90 | |
250 | 10 | 405 | 362 | 324 | 30.5 | 25 | 12 | 7/8 | 115 | 100 | |
300 | 12 | 485 | 431.8 | 381 | 32 | 25 | 12 | 7/8 | 120 | 100 | |
350 | 14 | 535 | 476.3 | 413 | 35 | 29 | 12 | 1 | 135 | 115 | |
400 | 16 | 595 | 539.8 | 470 | 37 | 29 | 16 | 1 | 135 | 115 | |
450 | 18 | 635 | 577.9 | 533 | 40 | 32 | 16 | 1-1/8 | 145 | 125 | |
500 | 20 | 700 | 635 | 584 | 43 | 32 | 20 | 1-1/8 | 160 | 140 | |
600 | 24 | 815 | 749.3 | 692 | 48 | 35 | 20 | 1-1/4 | 170 | 150 | |
Klasse 300 | 15 | 1/2 | 95 | 66.7 | 35 | 15 | 16 | 4 | 1/2 | 65 | 55 |
20 | 3/4 | 115 | 82.6 | 43 | 16 | 19 | 4 | 5/8 | 75 | 65 | |
25 | 1 | 125 | 88.9 | 51 | 18 | 19 | 4 | 5/8 | 75 | 65 | |
32 | 1-1/4 | 135 | 98.4 | 64 | 19.5 | 19 | 4 | 5/8 | 85 | 70 | |
40 | 1-1/2 | 155 | 114.3 | 73 | 21 | 22 | 4 | 3/4 | 90 | 75 | |
50 | 2 | 165 | 127 | 92 | 22.5 | 19 | 8 | 5/8 | 90 | 75 | |
65 | 2-1/2 | 190 | 149.2 | 105 | 25.5 | 22 | 8 | 3/4 | 100 | 85 | |
80 | 3 | 210 | 168.3 | 127 | 29 | 22 | 8 | 3/4 | 110 | 90 | |
100 | 4 | 255 | 200 | 157 | 32 | 22 | 8 | 3/4 | 115 | 95 | |
125 | 5 | 280 | 235 | 186 | 35 | 22 | 8 | 3/4 | 120 | 110 | |
150 | 6 | 320 | 269.9 | 216 | 37 | 22 | 12 | 3/4 | 120 | 110 | |
200 | 8 | 380 | 330.2 | 270 | 41.5 | 25 | 12 | 7/8 | 140 | 120 | |
250 | 10 | 445 | 387.4 | 324 | 48 | 29 | 16 | 1 | 160 | 140 | |
300 | 12 | 520 | 450.9 | 381 | 51 | 32 | 16 | 1-1/8 | 170 | 145 | |
350 | 14 | 585 | 514.4 | 413 | 54 | 32 | 20 | 1-1/8 | 180 | 160 | |
400 | 16 | 650 | 571.5 | 470 | 57.5 | 35 | 20 | 1-1/4 | 190 | 165 | |
450 | 18 | 710 | 628.6 | 533 | 60.5 | 35 | 24 | 1-1/4 | 195 | 170 | |
500 | 20 | 775 | 685.8 | 584 | 63.5 | 35 | 24 | 1-1/4 | 205 | 185 | |
600 | 24 | 915 | 812.8 | 692 | 70 | 41 | 24 | 1-1/2 | 230 | 205 | |

Klas | Maat | Afmetingen (mm) | Bout | L1 | ||||||
DN | NPS | D | D1 | D2 | b | d | Nummer | Diam(in) | ||
Klasse 600 | 15 | 1/2 | 95 | 66.7 | 35 | 14.5 | 15 | 4 | 1/2 | 75 |
20 | 3/4 | 115 | 82.6 | 43 | 16 | 19 | 4 | 5/8 | 90 | |
25 | 1 | 125 | 88.9 | 51 | 18 | 19 | 4 | 5/8 | 90 | |
32 | 1-1/4 | 135 | 98.4 | 64 | 21 | 19 | 4 | 5/8 | 95 | |
40 | 1-1/2 | 155 | 114.3 | 73 | 22.5 | 22 | 4 | 3/4 | 110 | |
50 | 2 | 165 | 127 | 92 | 22.5 | 19 | 8 | 5/8 | 110 | |
65 | 2-1/2 | 190 | 149.2 | 105 | 29 | 22 | 8 | 3/4 | 120 | |
80 | 3 | 210 | 168.3 | 127 | 32 | 22 | 8 | 3/4 | 125 | |
100 | 4 | 275 | 215.9 | 157 | 38.5 | 25 | 8 | 7/8 | 145 | |
125 | 5 | 330 | 266.7 | 186 | 44.5 | 29 | 8 | 1 | 165 | |
150 | 6 | 155 | 292.1 | 216 | 48 | 29 | 12 | 1 | 170 | |
200 | 8 | 420 | 349.2 | 270 | 56 | 32 | 12 | 1-1/8 | 190 | |
250 | 10 | 510 | 431.8 | 324 | 63.5 | 35 | 16 | 1-1/4 | 215 | |
300 | 12 | 560 | 489 | 381 | 67 | 35 | 20 | 1-1/4 | 220 | |
350 | 14 | 605 | 527 | 413 | 70 | 38 | 20 | 1-1/4 | 235 | |
400 | 16 | 685 | 603.2 | 470 | 76.5 | 41 | 20 | 1-1/2 | 255 | |
450 | 18 | 745 | 654 | 533 | 83 | 44 | 20 | 1-5/8 | 275 | |
500 | 20 | 815 | 723.9 | 584 | 89 | 44 | 24 | 1-5/8 | 285 | |
600 | 24 | 940 | 838.2 | 692 | 102 | 51 | 24 | 1-7/8 | 330 | |
Klasse 900 | 15 | 1/2 | 120 | 82.6 | 35 | 22.5 | 22 | 4 | 3/4 | 110 |
20 | 3/4 | 130 | 88.9 | 43 | 26 | 22 | 4 | 3/4 | 115 | |
25 | 1 | 150 | 101.6 | 51 | 29 | 25 | 4 | 7/8 | 125 | |
32 | 1-1/4 | 160 | 111.1 | 64 | 29 | 25 | 4 | 7/8 | 125 | |
40 | 1-1/2 | 180 | 123.8 | 73 | 32 | 29 | 4 | 1 | 140 | |
50 | 2 | 215 | 165.1 | 92 | 39 | 25 | 8 | 7/8 | 145 | |
65 | 2-1/2 | 245 | 190.5 | 105 | 42 | 29 | 8 | 1 | 160 | |
80 | 3 | 240 | 190.5 | 127 | 39 | 25 | 8 | 7/8 | 145 | |
100 | 4 | 290 | 235 | 157 | 45 | 32 | 8 | 1-1/8 | 170 | |
125 | 5 | 350 | 279.4 | 186 | 51 | 35 | 8 | 1-1/4 | 190 | |
150 | 6 | 380 | 317.5 | 216 | 56 | 32 | 12 | 1-1/8 | 190 | |
200 | 8 | 470 | 393.7 | 270 | 64 | 38 | 12 | 1-3/8 | 220 | |
250 | 10 | 545 | 469.9 | 324 | 70 | 38 | 16 | 1-3/8 | 235 | |
300 | 12 | 610 | 533.4 | 381 | 80 | 38 | 20 | 1-3/8 | 255 | |
350 | 14 | 640 | 558.8 | 413 | 86 | 41 | 20 | 1-1/2 | 275 | |
400 | 16 | 705 | 616 | 470 | 89 | 44 | 20 | 1-5/8 | 285 | |
450 | 18 | 785 | 685.8 | 533 | 102 | 51 | 20 | 1-7/8 | 325 | |
500 | 20 | 855 | 749.3 | 584 | 108 | 54 | 20 | 2 | 350 | |
600 | 24 | 1040 | 901.7 | 692 | 140 | 67 | 20 | 2-1/2 | 440 | |

Klas | Maat | Afmetingen (mm) | Bout | L1 | ||||||
NPS | D | D1 | D2 | b | d | Nummer | Diam(in) | |||
Klasse1500 | 15 | 1/2 | 120 | 82.6 | 35 | 23 | 22 | 4 | 3/4 | 110 |
20 | 3/4 | 130 | 88.9 | 43 | 26 | 22 | 4 | 3/4 | 115 | |
25 | 1 | 150 | 101.6 | 51 | 29 | 25 | 4 | 7/8 | 125 | |
32 | 1-1/4 | 160 | 111.1 | 64 | 29 | 25 | 4 | 7/8 | 125 | |
40 | 1-1/2 | 180 | 123.8 | 73 | 32 | 29 | 4 | 1 | 140 | |
50 | 2 | 215 | 165.1 | 92 | 39 | 29 | 8 | 7/8 | 145 | |
65 | 2-1/2 | 245 | 190.5 | 105 | 42 | 29 | 8 | 1 | 160 | |
80 | 3 | 265 | 203.2 | 127 | 48 | 32 | 8 | 1 1/8 | 180 | |
100 | 4 | 310 | 241.3 | 157 | 54 | 35 | 8 | 1 1/4 | 195 | |
125 | 5 | 375 | 292.1 | 186 | 74 | 41 | 8 | 1 1/2 | 250 | |
150 | 6 | 395 | 317.5 | 216 | 83 | 38 | 12 | 1 3/8 | 260 | |
200 | 8 | 485 | 393.7 | 270 | 92 | 44 | 12 | 1 5/8 | 290 | |
250 | 10 | 585 | 482.6 | 324 | 108 | 51 | 12 | 1 7/8 | 335 | |
300 | 12 | 675 | 571.5 | 381 | 124 | 54 | 16 | 2 | 375 | |
350 | 14 | 750 | 635 | 413 | 134 | 60 | 16 | 2 1/4 | 405 | |
400 | 16 | 825 | 704.8 | 470 | 147 | 67 | 16 | 2 1/2 | 445 | |
450 | 18 | 915 | 774.7 | 533 | 162 | 73 | 16 | 2 3/4 | 495 | |
500 | 20 | 985 | 831.8 | 584 | 178 | 79 | 16 | 3 | 540 | |
600 | 24 | 1170 | 990.6 | 692 | 204 | 92 | 16 | 3 1/2 | 615 | |
Klasse 2500 | 15 | 1/2 | 135 | 88.9 | 35 | 30.5 | 22 | 4 | 3/4 | 120 |
20 | 3/4 | 140 | 95.2 | 43 | 32 | 22 | 4 | 3/4 | 125 | |
25 | 1 | 160 | 108 | 51 | 35 | 25 | 4 | 7/8 | 140 | |
32 | 1-1/4 | 185 | 130.2 | 64 | 38.5 | 29 | 4 | 1 | 150 | |
40 | 1-1/2 | 205 | 146 | 73 | 44.5 | 32 | 4 | 1 1/8 | 170 | |
50 | 2 | 235 | 171.4 | 92 | 51 | 32 | 8 | 1 | 180 | |
65 | 2-1/2 | 265 | 196.8 | 105 | 57.5 | 32 | 8 | 1 1/8 | 195 | |
80 | 3 | 305 | 228.6 | 127 | 67 | 35 | 8 | 1 1/4 | 220 | |
100 | 4 | 355 | 273 | 157 | 76.5 | 41 | 8 | 1 1/2 | 255 | |
125 | 5 | 420 | 323.8 | 186 | 92.5 | 48 | 8 | 1 3/4 | 300 | |
150 | 6 | 485 | 368.3 | 216 | 108 | 54 | 8 | 2 | 345 | |
200 | 8 | 550 | 438.2 | 270 | 127 | 54 | 12 | 2 | 380 | |
250 | 10 | 675 | 539.8 | 324 | 165.5 | 67 | 12 | 2 1/2 | 490 | |
300 | 12 | 760 | 619.1 | 381 | 184.5 | 74 | 12 | 2 3/4 | 540 | |
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