Steam traps
Steam trap management
Page 4 of 4
Withdrawal distance
WLS1 PT1 PT2 PT3
J
K
K
K
127
119
129
97
127
119
129
97
134
126
136 104
176
167
177 145
176
167
177 145
127
119
129
97
127
119
129
97
134
126
136 104
127
119
129
97
127
119
129
97
134
126
136 104
5.1.5
2+3
mm
24 A/F
27 A/F
33 A/F
40 A/F
Dimensions/weights (approximate) in mm and kg
Type Size
A
A1
B
C
D
E
F
G
H
Weight
Scr. Flg.
0.82 2.3
0.82 2.8
2.20 4.6
22.00 27.5
22.00 29.0
1.20 2.5
1.20 3.0
2.20 4.6
1.20 -
1.20 -
1.20 -
DN15 - 1⁄2"
DN20 - 3⁄4"
ST14 DN25 - 1"
DN40 - 11⁄2"
DN50 - 2"
DN15 - 1⁄2"
ST16 DN20 - 3⁄4"
DN25 - 1"
1⁄2"
ST17 3⁄4"
1"
75
130
75
150
120
185
252
393
252
393
75
130
101
23
1⁄2"
101
23
1⁄2"
120
28
3⁄4"
215
45
1"
215
45
1"
101
23
1⁄2"
101
23
1⁄2"
33
46
85
88
33
46
85
88
40
53
91
95
82
95
133
137
82
95
133
137
33
46
85
88
33
46
85
88
75
150
120
185
3⁄4"
40
-
34.5
-
34.5
3⁄4"
40.0
120
28
72
-
89
23
72
-
89
23
120
-
120
28
53
91
95
47
87
88
47
87
88
54
93
95
A
A1
K (PT1)
K (PT2)
2+3
5
Screwed,
socket weld
C
Flanged
B
2+3
5
5
D
E
F
G
K (PT3)
2
5
H
Recommended tightening torques
Item Part
2
Sensor
Size
1⁄2" and 3⁄4"
Nm
50 - 56
54 - 60
84 - 93
130 - 145
4
5
Plug
Safety information, installation and maintenance
1"
11⁄2" and 2"
J (WLS1)
The sensor chamber should be installed immediately upstream of the steam trap (i.e. close coupled) in a horizontal pipeline with the direction
of flow in accordance with the flow arrow on the body.
How to order
Example: 1 off Spirax Sarco DN25 Spiratec ST143 (ST143L if a left hand sensor fitting is required) sensor chamber assembly with end
For full details see the Installation and Maintenance Instructions supplied with the product.
Installation note:
connections flanged EN 1092 PN40 fitted with SS1 standard sensor or Spiratec WLS1 waterlogging sensor. Note: State if the WLS1 is to
be supplied with or without a diode pack.
Spare parts
The spare parts available are detailed below. No other parts are supplied as spares.
Available spares
SS1 standard sensor and gasket
WLS1 waterlogging sensor assembly and gasket
WLS1 diode pack
Sensor gaskets (packs of 10)
Sensor blanking plug (optional extra - not shown)
How to order spares
2, 3
2, 3
4
3
Always order the spares by using the description given in the column headed 'Available spares' and state the size of model of the sensor chamber.
Example: 1 - Sensor blanking plug for a 1⁄2" Spirax Sarco Spiratec ST141 sensor chamber.
Spiratec ST14, ST16 and ST17 Sensor Chambers and Sensors
TI-P086-17 MI Issue 1
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