Pipeline ancillaries
Strainers and filters
Kv values
Size
Perforations 0.8, 1.6 and 3.0 mm
Mesh 40 and 100
Mesh 200
For conversion:
Cv (UK) = Kv x 0.963
Cv (US) = Kv x 1.156
DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200
5
8
13
22
29
46
72
103
155
237
340
588
5
8
13
22
29
46
72
103
155
237
340
588
4
6
10
17
23
37
58
83
124
186
268
464
Dimensions/weights (approximate) in mm and kg
Screening
area cm2
Spare parts
The spare parts available are shown in solid outline. Parts drawn in
broken line are not supplied as spares.
PN16 AS2129 ASME*
Size
A
A
DN15
130
130
DN20
150
147
DN25
160
157
DN32
180
176
DN40
200
194
DN50
230
224
DN65
290
288
DN80
310
304
DN100 350
350
DN125 400
400
DN150 480
480
DN200 600
598
* DN15 and DN20 ASME 150 and, DN25 to DN200 ASME 125
A
B
C
Weight
130
70
110
150
80
130
154
95
150
176 135 225
194 145 240
224 175 300
228 200 335
304 210 340
350 255 415
400 300 510
480 345 575
598 435 730
27
43
2.7
1.8
Available spares
Strainer screen
4
73
135
6.0
164
7.2
251
10.9
327
21.7
3.4
(state material, size of perforation or mesh and size of strainer)
Cap gasket (packet of 3)
3
361
545
38.5
843
63.0
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
perforations or mesh required.
Example: 1 - Strainer screen, stainless steel with 0.8 mm perforations
for a DN65 Spirax Sarco Fig 33 strainer.
25.9
1117
87.0
1909
153.0
A
B
DN15 to DN50
C
Withdrawal
distance
4
3
2
3
4
5
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 DN25 Spirax Sarco Fig 33 strainer having EN 1092
PN16 flanged connections. The strainer must be supplied with a
stainless steel screen having 0.8 mm perforations.
DN65 to DN200
Recommended tightening torques
Item
2
5
N m
Qty
1
1
1
1
1
1
Size
DN15
DN20
DN25
DN32
DN40
DN50
or
mm
36
38
50
46
50
60
M28
M32
M42
M56
M60
M72
8
8
8
8
8
12
DN65
DN80
DN100
DN125
DN150
DN200
19
M12 x 40
19
M12 x 40
24
M16 x 50
24
M16 x 50
30
M20 x 60
30
M20 x 70
50 - 55
60- 66
100 - 110
150 - 165
170 - 185
190 - 210
20- 24
30- 35
70- 77
80- 88
100 - 110
90 - 100
TI-S60-03 ST Issue 8
Fig 33 Cast Iron Strainer
7.7.20
