Snail valve forged steel valve as a professional manufacturer, providing our customers with high-quality single-stage worm gear box products. We uphold the "quality first, sincere service" purposes, will provide users with reasonable prices, reliable quality products and services! Dimensions Model Location ABC dh H φ φ1 2-b NM deep L Weight kg QDX3-2 215 190 68 90 52 50 160 70 5 4-M8 12 8 QDX3-3 265 235 86 125 62 68 250 103 8 4-M10 23 13 QDX3-4 315 270 81 150 68 80 250 124 10 4-M12 23 16 QDX3-5 385 320 94 175 75 100 320 130 12 4-M16 25 23 QDX3-6 425 355 121 210 105 120 350 166 12 4-M20 37 37 QDX3-7 470 420 125 260 110 140 350 200 16 8-M16 27 48 QDX3-8 610 540 150 300 120 160 500 254 18 8-M16 27 71 QDX3-9 680 550 160 350 120 188 500 398 22 8 - M20 45 95 QDX3-10 780 620 180 415 150 230 500 356 28 12-M20 50 160 ordinary type connection data sheet Technical data Type 2345678910 ratio 30:1 42:1 43:1 54: 1 48:1 58:1 53:1 63:1 66:1 input torque Nm 40 78 98 112 122 133 156 156 156 Output Torque Nm 300 820 1050 1500 1460 1920 2060 2460 2574 Swing stroke 90 ° 90 ° 90 ° 90 ° 90 ° 90 ° 90 ° 90 ° 90 ° limit adjustment ± 5 ° ± 5 ° ± 5 ° ± 5 ° ± 5 ° ± 5 ° ± 5 ° ± 5 ° ± 5 ° flange connection size φ 90 125 150 175 210,260,300,350,415 connection hole centers φ 70 102 125 140 165 200 254 298 356 flange concave φ 55 × 3 70 × 3 85 × 3 100 × 4 130 × 5 160 × 5 200 × 5 230 × 5 260 × 5 aperture : number of holes M8 × 4 M10 × 4 M12 × 4 M16 × 4 M20 × 4 M16 × 8 M16 × 8 M20 × 8 M20 × 12 shaft hole diameter mm 14 ~ 18 22 ~ 26 28 ~ 32 35 ~ 38 38 ~ 48 45 ~ 58 55 ~ 70 75 ~ 85 90 ~ 100 Flat key number of the × position, size × 5 × 5 8 × 7 10 × 8 12 × 8 12 × 8 × 2 × 90 ° 16 × 10 × 2 × 90 ° 18 × 11 × 2 × 90 ° 22 × 14 × 2 × 90 ° 28 × 16 × 2 × 90 ° installation Elevation 52 62 6,875,105,110,120,120,150 Hand wheel diameter φ 160 240 280 320 350 400 500 500 500 butterfly valve with reference parameters With DN 80-100 125-150 200-250 300-350 400-450 500-500 700 800 900-1000 ball valve parameters with DN 50 80 100 150 200 250-300 350 400 500