| 截止阀是一种常用的截断阀,主要用来接通或截断管路中的介质,一般不用于调节流量。截止阀适用的压力、温度范围很大,但一般用于中、小口径的管道。 1、截止阀的主要优点 (1)与闸阀相比,截止阀的结构较简单,制造与维修都较方便。 (2)密封面不易磨损、擦伤,密封性较好,寿命较长。 (3)启闭时阀瓣行程较小,启闭时间较短,阀门高度较小。 | 连接尺寸 压力尺寸 | 通径DN(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | 16C | L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | | | | | | D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 230 | 270 | 300 | 360 | | | | | | D1 | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 190 | 220 | 250 | 310 | | | | | | D2 | 45 | 55 | 65 | 78 | 85 | 100 | 120 | 135 | 160 | 188 | 218 | 278 | | | | | | Z-Φd | 4-Φ14 | 4-Φ14 | 4-Φ14 | 4-Φ18 | 4-Φ18 | 4-Φ18 | 8-Φ18 | 8-Φ18 | 8-Φ23 | 8-Φ25 | 8-Φ25 | 12-Φ25 | | | | | | 25C | L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | | | | | | D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 230 | 270 | 300 | 360 | | | | | | D1 | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 190 | 220 | 250 | 310 | | | | | | D2 | 45 | 55 | 65 | 78 | 85 | 100 | 120 | 135 | 160 | 188 | 218 | 278 | | | | | | Z-Φd | 4-14 | 4-14 | 4-14 | 4-18 | 4-18 | 4-18 | 8-18 | 8-18 | 8-23 | 8-25 | 8-25 | 12-25 | | | | | | 40C | L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | | | | | | D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 230 | 270 | 300 | 375 | | | | | | D1 | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 190 | 220 | 250 | 320 | | | | | | D2 | 45 | 55 | 65 | 78 | 85 | 100 | 120 | 135 | 160 | 188 | 218 | 282 | | | | | | D6 | 40 | 51 | 58 | 66 | 76 | 88 | 110 | 121 | 150 | 176 | 204 | 260 | | | | | | Z-Φd | 4-14 | 4-14 | 4-14 | 4-18 | 4-18 | 4-18 | 8-18 | 8-18 | 8-23 | 8-25 | 8-25 | 12-30 | | | | | | 64C | L | 170 | 190 | 210 | 230 | 260 | 300 | 340 | 380 | 430 | | 550 | | | | | | | D | 105 | 125 | 135 | 150 | 165 | 175 | 200 | 210 | 250 | | 340 | | | | | | | D1 | 75 | 90 | 100 | 110 | 125 | 135 | 160 | 170 | 200 | | 280 | | | | | | | D2 | 55 | 68 | 78 | 82 | 95 | 105 | 130 | 140 | 168 | | 240 | | | | | | | D6 | 41 | 51 | 58 | 66 | 76 | 88 | 110 | 121 | 150 | | 204 | | | | | | | Z-Φd | 4-14 | 4-18 | 4-18 | 4-23 | 4-23 | 4-23 | 8-23 | 8-23 | 8-25 | | 8-34 | | | | | | | 100C | L | 170 | 190 | 210 | 230 | 260 | 300 | | | | | | | | | | | | D | 105 | 125 | 135 | 150 | 165 | 195 | | | | | | | | | | | | D1 | 75 | 90 | 100 | 110 | 125 | 145 | | | | | | | | | | | | D2 | 55 | 68 | 78 | 82 | 95 | 112 | | | | | | | | | | | | D6 | 40 | 51 | 58 | 66 | 76 | 88 | | | | | | | | | | | | Z-Φd | 4-14 | 4-18 | 4-18 | 4-23 | 4-23 | 4-25 | | | | | | | | | | | | |