Hat type screens

  Hat type screens for installation between standard flanges

with plane sealing surface, screen cones made of perforated plate with stainless steel wire-cloth, face-to-face dimensions selected for bend socket with welding neckflange. Flow direction from inside to outside.
  If requested by customer, hat type strainers may be supplied with external wire-cloth for the opposite inflow.
 
Dimensions and weights for DIN flanges
Nominal size
25
32
40
50
65
80
100
125
150
200
250
300
350
400
500
600

Ring dia.
a
PN 10
68
78
88
102
122
138
158
188
212
268
320
370
430
482
585
685
PN 16
68
78
88
102
122
138
158
188
212
268
320
378
438
490
610
725
PN 25
68
78
88
102
122
138
162
190
218
278
335
395
450
505
615
720
PN 40
68
78
88
102
122
138
162
190
218
285
345
410
465
535
615
-
Screen dia.
d1
  
27
34
38
53
69
81
105
130
157
204
256
305
335
380
475
575
Screen dia.
d2
8
12
16
18
28
35
50
58
75
96
124
150
157
177
222
264
Face-to-face
h
41
45
50
82
100
115
140
165
192
255
317
375
430
495
620
750
Length
c
60
60
60
70
70
70
70
90
90
90
90
110
110
110
110
110
Weight
kg
0,1
0,1
0,2
0,2
0,3
0,4
0,5
0,7
0,9
1,5
2,2
4,4
5,7
7,5
10,4
14,4
 
Dimensions and weights for ANSI-flanges 150# - 600#
Nominal size
1"
1 1/4"
1 1/2"
2
1/2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
20"
24"
Ring dia.
a
  
60
70
80
94
104
129
159
188
218
272
326
383
415
472
586
695
Screen dia.
d1
27
27
38
51
61
76
100
126
152
201
252
302
334
385
487
588
Screen dia.
d2
8
8
16
18
28
30
45
54
75
93
120
146
156
182
233
264
Face-to-face
h
41
41
50
82
100
115
140
165
192
255
317
375
430
495
620
750
Length
c
60
60
60
100
100
100
100
120
120
120
140
140
140
150
150
150
Weight
kg
0,1
0,1
0,1
0,3
0,4
0,5
0,7
1,0
1,2
1,9
2,7
4,9
6,2
7,8
9,0
10,5
 
Perforated plate dimensions
Punch hole dia.
3,1
4
5
6
Separation holes mm
4,5
6
8
8
Sheet thickness mm
1
1
1
1
Free surface %
43,1
40,0
35,4
51,0
 
Wire-cloth dimensions            
Mesh size µ
0,1
0,25
0,5
1,0
1,5
2,0
Wire dia. mm
0,063
0,1
0,2
0,5
0,5
0,9
Free surface %
38,0
51,0
51,0
44,0
56,0
48,0
The diameter d1 is adapted to the wall thickness of DIN-flanges or to the standard wall thickness of ANSI-flanges.
In case of deviations please state the dimension "J" of the flange.
 

Hat-type screens in completely welded construction (no brazing).
Sealing surfaces plane-parallely machined after welding.
The free surface is about 1,5 times the free pip cross-section.
With water w = 2,0 m/s in the pipe, the differential pressure in clean state amounts to approx. 0,1 bar.
Max. allowable differential pressure : up to DN 250 = 1 bar / DN300 and larger = 0,5 bar
 
- screen wire cloth made of other materials or with optional mesh sizes
- design as with sharp top or with double cone
- for flanges made of other standards
- flange faces male/female, tongue/groove to DIN 2526 or RJ acc to ANSI
- other materials, higher nominal pressures and further special design on request
 
The construction, the measurements and weights of the described valves represent the current technical standards. We reserve the right to change the technical details and to use materials of equivalent and higher quality. We cannot be held responsible for any printing or translation errors that might be found in this document.
 
Filtermat filters
Telephone +32-3-711.03.57 or +32-3-710.65.50
Fax +32-3-711.03.58 or +32-3-710.65.58
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Email info@filtermat.be
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