Pipeline ancillaries
Strainers and filters
Kv values
For conversion: Cv (UK) = Kv x 0.963
Cv (US) = Kv x 1.156
Size
DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200
Perforations 0.8, 1.6 and 3 mm
5
8
13
22
29
46
72
103
155
237
340
588
Mesh 40 and 100
5
8
13
22
29
46
72
103
155
237
340
588
Mesh200
4
6
10
17
23
37
58
83
124
186
268
464
Dimensions / weights (approximate) in mm and kg
Spare parts
The spare parts available are shown in solid outline. Parts drawn in
broken line are not supplied as spares.
Available spares
Cap gasket
DN125 to DN200 (1 off)
3
How to order spares
Always order spares by using the description given in the column
headed 'Available spares' and state the size and type of strainer and
perforation or mesh required.
Example: 1 - Strainer screen, stainless steel having 0.8 mm
perforations for a DN50 Spirax Sarco Fig 3716 strainer PN16.
Size
A
DN15
130
DN20
150
DN25
160
DN32
180
DN40
200
DN50
230
DN65
290
DN80
310
DN100
350
DN125
400
DN150
480
DN200
600
150
-
-
-
-
-
233
288
311
345
396
482
610
Upstream
pressure
tapping
B
69
82
90
114
127
150
162
178
210
253
293
375
Weight
PN16 ASME
Screening
C
area cm2
101
28
125
46
140
79
198
135
210
161
9.0
2.1
2.9
3.8
6.6
Strainer screen
(state: perforations or mesh and size of strainer)
4
DN15 to DN100 (packet of 3)
3
248
251
263
325
17.5
272
360
20.0
323
540
24.0
393
840
38.0
454
1 115
50.5
584
1 905
88.0
Downstream
pressure
tapping
10.5
B
3
4
5
(not an available spare)
Recommended tightening torques
Item
5
A
Withdrawal distance C
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
(IM-S60-18) supplied with the product.
Installation note:
The strainer should be installed in the direction of flow, as
indicated on the body. On applications involving steam or gases
the pocket should be in the horizontal plane. On liquid systems the
pocket should point downwards. Suitable isolation valves must
be installed to allow for safe maintenance and trap replacement.
Maintenance note:
Maintenance can be completed with the strainer in the pipeline.
Disposal
The product is recyclable. No ecological hazard is anticipated
with disposal of this product, providing due care is taken.
How to order
Example: 1 off Spirax Sarco DN40 Fig 3716 strainer, flanged
EN 1092 PN16 with austenitic stainless steel screen having
0.8 mm perforations and flanged screen cap.
N m
15 - 20
15 - 20
15 - 20
22 - 25
22 - 25
22 - 25
50 - 60
50 - 60
50 - 60
100 - 110
Size
Qty
or
mm
DN15 and DN20
DN25
DN32 and DN40
DN50
DN65
DN80
DN100
DN125
DN150
DN200
4
4
4
4
4
6
6
8
8
8
13
13
13
17
17
17
19
19
19
24
M8 x 20
M8 x 20
M8 x 20
M10 x 25
M10 x 30
M10 x 30
M12 x 35
M12 x 40
M12 x 40
M16 x 50
Fig 3716 SG Iron Strainer - DIN Material
TI-P081-03 ST Issue 7
7.7.52
