F膜片

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概述

这种F型膜片通常也被称为“顶帽膜片”。它展示了所有与滚动膜片相关的优点。这些膜片拥有最长的冲程比率，零弹簧刚度，零起步阻力，恒定有效压力范围和较长寿命。F型膜片的一些不足包括：安装时在转换上盖刀尖圆弧半径过程中需要额外装配时间，无力承受反压力。. F型膜片的凸缘通过设计能产生密封效果，就像一个汽缸和阀帽两表面之间垫圈。外缘和螺旋孔能被切割成任意的规格。通过挤压凸缘区域20%-25%的厚度能确保完好的密封。 为了延长膜片的使用寿命，减少“四角”的影响，可以通过采用双圆锥样式的设计（见图1）。这种设计减少膜片底部的直径并尽量减少这块所产生的过剩材料，减缓圆周挤迫压力。
Type F 膜片
Type F Figure 1 Type F Figure 2
Dimensions and Tolerances
Inches mm Inches mm Inches mm Inches mm Inches mm
Cylinder Diameter
.25-.99
6-25
1.00-2.50
25-64
2.51-4.00
64-102
4.01-8.00
102-205
8.01 & up
205 & up
Height
See available sizes table
Cylinder Diameter
Tolerances on Cylinder Diameter and Piston Diameter are ± 0.010" per inch (0.254 mm) of diameter but the tolerance will be no less than ± 0.010" (0.254 mm) or greater than ± 0.060" (1.52 mm)
Piston Diameter
Head & Flange Thickness
.015 ± .003
0.38 ± .08
.017 ± .004
0.43 ± 0.10
.024 ± .004
0.61 ± .10
.035 ± .005
0.89 ± 0.13
.045 ± .007
1.14 ± 0.18
Wall Gauge
.015 ± .003
0.38 ± 0.08
.017 ± .004
0.43 ± 0.08
.024 ± .004
0.61 ± 0.10
.035 ± .005
0.89 ± 0.13
.045 ± .007
1.14 ± 0.18
Piston Radius
.094
1.39
.125
3.18
.156
3.96
.250
6.35
.250
6.35
Flange Radius
.031
0.79
.063
1.60
.094
2.39
.125
3.18
.125
3.18
Flange Diameter
Cyl. Diam. ± .750
Cyl. Diam. ± 19.05
Cyl. Diam. ± 1.000
Cyl. Diam. ± 25.40
Cyl. Diam. ± 1.500
Cyl. Diam. + 38.10
Cyl. Diam. ± 2.000
Cyl. Diam. ± 50.80
Cyl. Diam. ± 2.000
Cyl. Diam. ± 50.80

 

Diaphragm Flange Diameter and Hole Trim Tolerance
Diameter Size Position
(Inches) (mm) (Inches) (mm) (Inches) (mm)

0-1.00
.0-25.40
± .010
0.25
.010
0.25

1.01-3.00
25.65-76.20
± .020
0.51
.020
0.51

over 3.01
76.45
± .030
0.76
.030

 0.76
Hole Spacing for Type F Diaphragms
Type F Figure 3
Max. Working Pressure (P.S.I.)/KPA
(0-50)
0-350
(51-150)
357-1050
(151-300)
1057-2100
(301-500)
2107-3500
Seal Area Minimum Inches/mm
.100
2.54
.150
3.81
.200
5.08
.250
6.35

Hole Spacing

Perforations through the head or the flange should be located so that there is at least 0.100 inches (2.54 mm) minimum between the edges of holes. Also, holes should be located so that there is at least 0.125 inches (3.175 mm) between the edges of a hole and the trim periphery. It is also important to arrange the hole pattern so that the radial distance from the edge of the hole to the start of the blend radius at either the piston head or cylinder clamp flange is at least as far as indicated in the chart above.
Available Sizes
Dia•Com
Part No.		 Cylinder
Diameter
 Piston
Diameter
 Height
 Gauge
Approx.
 Convolution
Width
 Effective
Pressure
Area
 Maximum
Half-Stroke
(Inches) (mm) (Inches) (mm) (Inches) (mm) (Inches) (mm) (Inches) (mm) (Inches) * (Inches) (mm)

F-34-39
0.34
9
0.22
6
0.39
10
.015
0.38
.060
1.5
0.06
0.4
0.17
4.3

F-37-31
0.37
9
0.25
6
0.31
8
.015
0.38
.060
1.5
0.08
0.5
0.09
2.3

F-44-44
0.44
11
0.31
8
0.44
11
.015
0.38
.065
1.7
0.11
0.7
0.21
5.3

F-50-50
0.50
13
0.31
8
0.50
13
.012
0.30
.095
2.4
0.13
0.8
0.12
3.0

F-62-50
0.62
16
0.50
13
0.50
13
.015
0.38
.060
1.5
0.25
1.6
0.28
7.1

F-62-65
0.62
16
0.47
12
0.65
17
.024
0.61
.075
1.9
0.23
1.5
0.47
11.9

F-75-38
0.75
19
0.62
16
0.38
10
.010
0.25
.065
1.7
0.37
2.4
0.12
3.0

F-75-62
0.75
19
0.62
16
0.62
16
.011
0.28
.065
1.7
0.37
2.4
0.36
9.1

F-75-62
0.75
19
0.62
16
0.62
16
.015
0.38
.065
1.7
0.52
3.4
0.36
9.1

F-89-58
0.89
23
0.71
18
0.58
15
.015
0.38
.090
2.3
0.50
3.3
0.21
5.3

F-100-44
1.00
25
0.81
21
0.44
11
.010
0.25
.095
2.4
0.64
4.1
0.06
1.5

F-100-62
1.00
25
0.81
21
0.62
16
.017
0.43
.095
2.4
0.64
4.1
0.24
6.1

F-100-100
1.00
25
0.81
21
1.00
25
.017
0.43
.095
2.4
0.64
4.1
0.62
15.7

F-112-44
1.12
28
0.94
24
0.44
11
.017
0.43
.090
2.3
0.83
5.4
0.07
1.8

F-112-69
1.12
28
0.94
24
0.69
18
.017
0.43
.090
2.3
0.83
5.4
0.32
8.1

F-118-53
1.18
30
0.97
25
0.53
13
.017
0.43
.105
2.7
1.30
8.3
0.22
5.6

F-118-76
1.18
30
0.97
25
0.76
19
.017
0.43
.105
2.7
0.91
5.9
0.45
11.4

F-137-112
1.37
35
1.19
30
1.12
28
.017
0.43
.090
2.3
1.29
8.3
0.75
19.1

F-150-62
1.50
38
1.31
33
0.62
16
.017
0.43
.095
2.4
1.55
10.0
0.24
6.1

F-150-75
1.50
38
1.31
33
0.50
13
.017
0.43
.095
2.4
1.55
10.0
0.37
9.4

F-150-94
1.50
38
1.31
33
0.94
24
.020
0.51
.095
2.4
1.55
10.0
0.56
14.2

F-156-141
1.56
38
1.38
35
1.41
36
.017
0.43
.060
1.5
1.63
10.5
1.04
26.4

F-158-103
1.58
40
1.52
39
1.03
26
.020
0.51
.030
0.8
1.89
12.2
0.90
22.9

F-162-44
1.62
41
1.47
37
0.44
11
.017
0.43
.090
2.3
1.84
11.9
0.07
1.8

F-162-46
1.62
41
1.47
37
0.46
12
.020
0.51
.075
1.9
2.26
12.1
0.07
1.8

F-162-69
1.62
41
1.44
37
0.69
18
.017
0.43
.090
2.3
1.84
11.9
0.32
8.1

F-175-106
1.75
44
1.56
40
1.06
27
.017
0.43
.095
2.4
2.15
13.9
0.68
17.3

F-175-175
1.75
44
1.56
40
1.75
44
.015
0.38
.095
2.4
2.15
13.9
1.37
34.8

F-200-75
2.00
51
1.81
46
0.75
19
.017
0.43
.095
2.4
2.85
18.4
0.37
9.4

F-200-100
2.00
51
1.81
46
1.00
25
.016
0.41
.095
2.4
2.85
18.4
0.62
15.7

F-200-162
2.00
51
1.81
46
1.62
41
.017
0.43
.095
2.4
2.85
18.4
1.24
31.5

F-200-200
2.00
51
1.81
46
2.00
51
.017
0.43
.095
2.4
2.85
18.4
1.62
41.1

F-212-131
2.12
54
1.94
49
1.31
33
.017
0.43
.090
2.3
3.23
20.9
0.94
23.9

F-225-62
2.25
57
2.06
52
0.62
16
.020
0.43
.095
2.4
3.65
23.5
0.26
6.6

F-225-94
2.25
57
2.06
52
0.94
24
.017
0.43
.095
2.4
3.65
23.5
0.56
14.2

F-225-137
2.25
57
2.06
52
1.37
35
.017
0.43
.095
2.4
3.65
23.5
0.99
25.1

F-250-142
2.50
64
2.31
59
1.42
36
.017
0.43
.095
2.4
4.54
29.3
1.04
26.4

F-250-150
2.50
64
2.31
59
1.50
38
.017
0.43
.095
2.4
4.54
29.3
1.12
28.4

F-250-153
2.50
64
2.00
51
1.53
39
0.18
0.46
.250
6.4
3.97
25.6
1.10
27.9

F-275-112
2.75
70
2.44
62
1.12
28
.024
0.61
.155
3.9
6.62
34.1
0.57
14.5

F-300-119
3.00
76
2.69
68
1.19
30
.030
0.76
.155
3.9
6.35
41.0
0.64
16.3

F-319-100
3.19
81
2.88
73
1.00
25
.024
0.61
.155
3.9
8.78
46.7
0.45
11.4

F-325-131
3.25
83
2.94
75
1.31
33
.024
0.61
.155
3.9
7.52
48.5
0.76
19.3

F-328-148
3.28
83
2.75
70
1.48
38
.017
0.43
.265
6.7
7.14
46
0.76
19.3

F-350-212
3.50
89
3.18
81
2.12
54
.030
0.76
.160
4.1
8.76
56.5
1.72
43.7

F-375-132
3.75
95
3.44
87
1.32
34
.022
0.56
.155
3.9
10.15
65.5
0.77
19.6

F-375-225
3.75
95
3.44
87
2.25
57
.024
0.61
.155
3.9
10.15
65.5
1.70
43.2

F-400-400
4.00
102
3.69
94
4.00
102
.024
0.61
.155
3.9
11.61
74.9
3.49
87.6

F-402-154
4.02
102
3.70
94
1.54
39
.032
0.81
.160
4.1
11.70
75.5
0.88
22.4

F-450-275
4.50
114
4.00
102
2.75
70
.035
0.89
.250
6.4
14.18
91.5
1.97
50.0

F-460-450
4.60
117
4.00
102
4.50
114
.040
1.02
.300
7.6
14.51
93.6
3.6
91.4

F-475-82
4.75
121
4.37
111
0.82
21
.035
0.89
.190
4.8
16.32
105.3
0.10
2.5

F-475-187
4.75
121
4.27
108
1.87
47
.035
0.89
.240
6.1
15.97
103.0
1.09
27.7

F-475-187
4.75
121
4.25
108
1.87
47
.035
0.89
.250
6.4
19.63
102.6
1.09
27.7

F-500-300
5.00
127
4.50
114
3.00
76
.035
0.89
.250
6.4
17.71
114.3
2.22
56.4

F-531-256
5.31
135
4.13
105
2.56
65
.039
0.99
.590
15
17.49
112.8
1.35
34.3

F-550-175
5.50
140
5.00
127
1.75
44
.035
0.89
.250
6.3
21.64
139.6
0.97
24.6

F-550-337
5.50
140
5.00
127
3.37
86
.035
0.89
.250
6.3
21.64
139.6
2.59
65.8

F-600-513
6.00
152
5.50
140
5.13
130
.040
1.02
.250
6.3
30.66
167.4
4.35
110.5

F-675-232
6.75
171
6.25
159
2.32
59
.035
0.89
.250
6.3
33.17
214.03
1.54
39.1

F-750-150
7.50
191
7.00
178
1.50
38
.035
0.89
.250
6.4
41.26
266.2
0.72
18.3

F-800-400
8.00
203
7.50
191
4.00
102
.035
0.89
.250
6.3
47.15
304.2
3.22
81.8

F-1000-200
10.00
254
9.25
235
2.00
51
.050
1.27
.375
9.5
72.72
469.2
1.02
25.9

F-1000-225
10.00
254
9.50
241
2.25
57
.035
0.89
.250
6.4
74.62
481.4
1.47
37.3

F-1000-412
10.00
254
9.50
241
4.12
105
.035
0.89
.250
6.4
74.62
481.4
3.34
84.8

F-1000-412
10.00
254
9.50
241
4.12
105
.040
1.02
.250
6.4
82.47
481.4
3.34
84.8

F-1188-538
11.88
302
11.38
289
5.38
137
.040
1.02
.250
6.3
106.18
685.0
4.60
116.8

*Metric effective pressure area shown in square centimeters.