
DH-DJ 双金属夹套垫片特别适用于密封热交换器、燃气管道、铸铁法兰、高压釜等的平面。通过在法兰的圆形边缘上施加强大的压力来提供密封效率,金属护套垫片可以承受与初始厚度相比高达 30% 的偏差,这在法兰边缘不规则或有缺陷的情况下非常有用。应考虑金属和被密封介质的化学相容性。
优点:
· 适用于高装配应力。
· 高度抗爆裂。
形状和结构:
金属护套垫片有多种类型,可以满足最苛刻应用的要求。如图所示,它们的金属护套内有柔软的填充物。
形状 | ||
DH-DJ-NA | DH-DJ-FA | DH-DJ-CA |
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材料
金属芯材料 | 填充材料 | ||
321型 | 1.4541 | 石墨 | |
316Ti型 | 1.4571 | 聚四氟乙烯 | |
304型 | 1.4301 | 云母 | |
316L型 | 1.4404 | 陶瓷制品 | |
碳钢 | 1.0038 | 无石棉 | |
309型 | 1.4828 | ||
合金400 | 2.4360 | ||
铜 | 2.0090 | ||
合金C276 | 2.4819 | ||
绘画



DH--DJ ASME B16.5 法兰尺寸
法兰尺寸 (NPS) | 垫圈内径, 毫米(英寸) | 按压力等级划分的垫圈外径,毫米(英寸)[注 (1) ] | ||||||
[注 (1) ] | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 | |
1∕2 | 22.4 (0.88) | 44.5 (1.75) | 50.8 (2.00) | [注 (2) ] | 50.8 (2.00) | [注 (2) ] | 60.5 (2.38) | 66.8 (2.63) |
3∕4 | 28.7 (1.13) | 54.1 (2.13) | 63.5 (2.50) | [注 (2) ] | 63.5 (2.50) | [注 (2) ] | 66.8 (2.63) | 73.2 (2.88) |
1 | 38.1 (1.50) | 63.5 (2.50) | 69.9 (2.75) | [注 (2) ] | 69.9 (2.75) | [注 (2) ] | 76.2 (3.00) | 82.6 (3.25) |
11∕4 | 47.8 (1.88) | 73.2 (2.88) | 79.5 (3.13) | [注 (2) ] | 79.5 (3.13) | [注 (2) ] | 85.9 (3.38) | 101.6 (4.00) |
11∕2 | 54.1 (2.13) | 82.6 (3.25) | 92.2 (3.63) | [注 (2) ] | 92.2 (3.63) | [注 (2) ] | 95.3 (3.75) | 114.3 (4.50) |
2 | 73.2 (2.88) | 101.6 (4.00) | 108.0 (4.25) | [注 (2) ] | 108.0 (4.25) | [注 (2) ] | 139.7 (5.50) | 143.0 (5.63) |
21∕2 | 85.9 (3.38) | 120.7 (4.75) | 127.0 (5.00) | [注 (2) ] | 127.0 (5.00) | [注 (2) ] | 162.1 (6.38) | 165.1 (6.50) |
3 | 108.0 (4.25) | 133.4 (5.25) | 146.1 (5.75) | [注 (2) ] | 146.1 (5.75) | 165.1 (6.50) | 171.5 (6.75) | 193.8 (7.63) |
4 | 131.8 (5.19) | 171.5 (6.75) | 177.8 (7.00) | 174.8 (6.88) | 190.5 (7.50) | 203.2 (8.00) | 206.5 (8.13) | 231.9 (9.13) |
5 | 152.4 (6.00) | 193.8 (7.63) | 212.9 (8.38) | 209.6 (8.25) | 238.3 (9.38) | 244.6 (9.63) | 251.0 (9.88) | 276.4 (10.88) |
6 | 190.5 (7.50) | 219.2 (8.63) | 247.7 (9.75) | 244.6 (9.63) | 263.7 (10.38) | 285.8 (11.25) | 279.4 (11.00) | 314.5 (12.38) |
8 | 238.3 (9.38) | 276.4 (10.88) | 304.8 (12.00) | 301.8 (11.88) | 317.5 (12.50) | 355.6 (14.00) | 349.3 (13.75) | 384.3 (15.13) |
10 | 285.8 (11.25) | 336.6 (13.25) | 358.9 (14.13) | 355.6 (14.00) | 397.0 (15.63) | 431.8 (17.00) | 431.8 (17.00) | 473.2 (18.63) |
12 | 342.9 (13.50) | 406.4 (16.00) | 419.1 (16.50) | 416.1 (16.38) | 454.2 (17.88) | 495.3 (19.50) | 517.7 (20.38) | 546.1 (21.50) |
14 | 374.7 (14.75) | 447.8 (17.63) | 482.6 (19.00) | 479.6 (18.88) | 489.0 (19.25) | 517.7 (20.38) | 574.8 (22.63) | [注 (2) ] |
16 | 425.5 (16.75) | 511.3 (20.13) | 536.7 (21.13) | 533.4 (21.00) | 562.1 (22.13) | 571.5 (22.50) | 638.3 (25.13) | [注 (2) ] |
18 | 489.0 (19.25) | 546.1 (21.50) | 593.9 (23.38) | 590.6 (23.25) | 609.6 (24.00) | 635.0 (25.00) | 701.8 (27.63) | [注 (2) ] |
20 | 533.4 (21.00) | 603.3 (23.75) | 651.0 (25.63) | 644.7 (25.38) | 679.5 (26.75) | 695.5 (27.38) | 752.6 (29.63) | [注 (2) ] |
24 | 641.4 (25.25) | 714.5 (28.13) | 771.7 (30.38) | 765.3 (30.13) | 787.4 (31.00) | 835.2 (32.88) | 898.7 (35.38) | [注 (2) ] |
一般说明:
(a) 参考图 JA-3-1。
(b) 垫片厚度公差为 +0.8 毫米、-0.0 毫米(+0.03 英寸、-0.000 英寸)。笔记:
(1) 对于 NPS 1∕2 至 NPS 24 垫圈,外径和内径公差为 +1.5 mm,
−0.0 毫米(+0.06 英寸,-0.000 英寸)。
(2) NPS 1∕2 至 NPS 3 中没有 Class 400 法兰(使用 Class 600),NPS 1∕2 至 NPS 21∕2 中没有 Class 900 法兰(使用 Class 1500),或 Class 900 法兰。
2500 个 NPS 14 及更大尺寸的法兰。
ASME B16.47 A 系列法兰的 DH-DJ 尺寸
法兰 尺寸(NPS) | 内径,mm (in.),[注 (1) ] | 按压力等级划分的垫圈外径,毫米(英寸)[注 (1) ] | ||||
150 | 300 | 400 | 600 | 900 | ||
26 | 673.1 (26.50) | 771.7 (30.38) | 831.9 (32.75) | 828.8 (32.63) | 863.6 (34.00) | 879.6 (34.63) |
28 | 723.9 (28.50) | 828.8 (32.63) | 895.4 (35.25) | 889.0 (35.00) | 911.4 (35.88) | 943.1 (37.13) |
30 | 774.7 (30.50) | 879.6 (34.63) | 949.5 (37.38) | 943.1 (37.13) | 968.5 (38.13) | 1 006.6 (39.63) |
32 | 825.5 (32.50) | 936.8 (36.88) | 1 003.3 (39.50) | 1 000.3 (39.38) | 1 019.3 (40.13) | 1 070.1 (42.13) |
34 | 876.3 (34.50) | 987.6 (38.88) | 1 054.1 (41.50) | 1 051.1 (41.38) | 1 070.1 (42.13) | 1 133.6 (44.63) |
36 | 927.1 (36.50) | 1 044.7 (41.13) | 1 114.6 (43.88) | 1 114.6 (43.88) | 1 127.3 (44.38) | 1 197.1 (47.13) |
38 | 977.9 (38.50) | 1 108.2 (43.63) | 1 051.1 (41.38) | 1 070.1 (42.13) | 1 101.9 (43.38) | 1 197.1 (47.13) |
40 | 1 028.7 (40.50) | 1 159.0 (45.63) | 1 111.3 (43.75) | 1 124.0 (44.25) | 1 152.7 (45.38) | 1 247.9 (49.13) |
42 | 1 079.5 (42.50) | 1 216.2 (47.88) | 1 162.1 (45.75) | 1 174.8 (46.25) | 1 216.2 (47.88) | 1 298.7 (51.13) |
44 | 1 130.3 (44.50) | 1 273.3 (50.13) | 1 216.2 (47.88) | 1 228.9 (48.38) | 1 267.0 (49.88) | 1 365.3 (53.75) |
46 | 1 181.1 (46.50) | 1 324.1 (52.13) | 1 270.0 (50.00) | 1 286.0 (50.63) | 1 324.1 (52.13) | 1 432.1 (56.38) |
48 | 1 231.9 (48.50) | 1 381.3 (54.38) | 1 320.8 (52.00) | 1 343.2 (52.88) | 1 387.6 (54.63) | 1 482.9 (58.38) |
50 | 1 282.7 (50.50) | 1 432.1 (56.38) | 1 374.9 (54.13) | 1 400.3 (55.13) | 1 444.8 (56.88) | [注 (2) ] |
52 | 1 333.5 (52.50) | 1 489.2 (58.63) | 1 425.7 (56.13) | 1 451.1 (57.13) | 1 495.6 (58.88) | [注 (2) ] |
54 | 1 384.3 (54.50) | 1 546.4 (60.88) | 1 489.2 (58.63) | 1 514.6 (59.63) | 1 552.7 (61.13) | [注 (2) ] |
56 | 1 435.1 (56.50) | 1 603.5 (63.13) | 1 540.0 (60.63) | 1 565.4 (61.63) | 1 603.5 (63.13) | [注 (2) ] |
58 | 1 485.9 (58.50) | 1 660.7 (65.38) | 1 590.8 (62.63) | 1 616.2 (63.63) | 1 660.7 (65.38) | [注 (2) ] |
60 | 1 536.7 (60.50) | 1 711.5 (67.38) | 1 641.6 (64.63) | 1 679.7 (66.13) | 1 730.5 (68.13) | [注 (2) ] |
一般说明:
(a) 参考图 JA-3-1。
(b) 垫片厚度公差为 +0.8 毫米、-0.0 毫米(+0.03 英寸、-0.000 英寸)。
笔记:
(1) 对于 NPS 26 至 NPS 60 垫圈,外径和内径公差为 +3.3 mm、-0.0 mm(+0.13 英寸、-0.000 英寸)。
(2) NPS 50 及更大尺寸中没有 900 级法兰。
ASME B16.47 B 系列法兰的 DH - DJ 尺寸
法兰 尺寸(NPS) | 垫片内径,mm (in.)[注 (1) ] | 按压力等级划分的垫圈外径,毫米(英寸)[注 (1) ] | ||||
150 | 300 | 400 | 600 | 900 | ||
26 | 673.1 (26.50) | 722.4 (28.44) | 768.4 (30.25) | 743.0 (29.25) | 762.0 (30.00) | 835.2 (32.88) |
28 | 723.9 (28.50) | 773.2 (30.44) | 822.5 (32.38) | 797.1 (31.38) | 816.1(32.13) | 898.7 (35.38) |
30 | 774.7 (30.50) | 824.0 (32.44) | 882.7 (34.75) | 854.2 (33.63) | 876.3 (34.50) | 955.8 (37.63) |
32 | 825.5 (32.50) | 877.8 (34.56) | 936.8 (36.88) | 908.1 (35.75) | 930.4 (36.63) | 1 013.0 (39.88) |
34 | 876.3 (34.50) | 931.9 (36.69) | 990.6 (39.00) | 958.9 (37.75) | 993.9 (39.13) | 1 070.1 (42.13) |
36 | 927.1 (36.50) | 984.3 (38.75) | 1 044.7 (41.13) | 1 019.3 (40.13) | 1 044.7 (41.13) | 1 120.9 (44.13) |
38 | 977.9 (38.50) | 1 041.4 (41.00) | 1 095.5 (43.13) | 1 070.1 (42.13) | 1 101.9 (43.38) | 1 197.1 (47.13) |
40 | 1 028.7 (40.50) | 1 092.2 (43.00) | 1 146.3 (45.13) | 1 124.0 (44.25) | 1 152.7 (45.38) | 1 247.9 (49.13) |
42 | 1 079.5 (42.50) | 1 143.0 (45.00) | 1 197.1 (47.13) | 1 174.8 (46.25) | 1 216.2 (47.88) | 1 298.7 (51.13) |
44 | 1 130.3 (44.50) | 1 193.8 (47.00) | 1 247.9 (49.13) | 1 228.9 (48.38) | 1 267.0 (49.88) | 1 365.3 (53.75) |
46 | 1 181.1 (46.50) | 1 252.5 (49.31) | 1 314.5 (51.75) | 1 286.0 (50.63) | 1 324.1 (52.13) | 1 432.1 (56.38) |
48 | 1 231.9 (48.50) | 1 303.3 (51.31) | 1 365.3 (53.75) | 1 343.2 (52.88) | 1 387.6 (54.63) | 1 482.9 (58.38) |
50 | 1 282.7 (50.50) | 1 354.1 (53.31) | 1 416.1 (55.75) | 1 400.3 (55.13) | 1 444.8 (56.88) | [注 (2) ] |
52 | 1 333.5 (52.50) | 1 404.9 (55.31) | 1 466.9 (57.75) | 1 451.1 (57.13) | 1 495.6 (58.88) | [注 (2) ] |
54 | 1 384.3 (54.50) | 1 460.5 (57.50) | 1 527.3 (60.13) | 1 514.6 (59.63) | 1 552.7 (61.13) | [注 (2) ] |
56 | 1 435.1 (56.50) | 1 511.3 (59.50) | 1 590.8 (62.63) | 1 565.4 (61.63) | 1 603.5 (63.13) | [注 (2) ] |
58 | 1 485.9 (58.50) | 1 576.3 (62.06) | 1 652.5 (65.06) | 1 616.2 (63.63) | 1 660.7 (65.38) | [注 (2) ] |
60 | 1 536.7 (60.50) | 1 627.1 (64.06) | 1 703.3 (67.06) | 1 679.7 (66.13) | 1 730.5 (68.13) | [注 (2) ] |
一般说明:
(a) 参考图 JA-3-1。
(b) 垫片厚度公差为 +0.8 毫米、-0.0 毫米(+0.03 英寸、-0.000 英寸)。
笔记:
(1) 对于 NPS 26 至 NPS 60 垫圈,外径和内径公差为 +3.3 mm、-0.0 mm(+0.13 英寸、-0.000 英寸)。
(2) NPS 50 及更大尺寸中没有 900 级法兰。