1. Start at the standard factory setting (point A) (100
°
C at 0.9 MPaG, 9 barg; 212
°
F at 130 psig).
2. Move up or down vertically to the desired set temperature (point B).
3. Follow the set temperature line in either direction to the vertical line corresponding to the
actual operating steam pressure (point C).
4. Follow the horizontal line to where it meets the left side of the chart (point D), indicating the
number and direction of turns required. (- turn: clockwise, + turn: counterclockwise)
Set Temperature Adjustment Chart
The trap can be set to open at any temperature between 50
°
C and 200
°
C (120
°
F and 390
°
F)
provided the set temperature is at least 15
°
C (27
°
F) below saturated steam temperature.
To determine the number and direction of adjusting screw turns required for the desired set
temperature, refer to the charts below.
- turn: clockwise, + turn: counterclockwise
Standard "0" position = 100 ˚C at 0.9 MPaG, 9 barg; 212 ˚F at 130 psig
1 MPa = 10.197 kg/cm
2
= 10 bar
Adjusting
Screw
Adjuster Slot
Cover
A
B
Standard Factory Setting ("0" Position):
The standard "0" position is the position where point (A), the
bottom of the adjusting screw slot is even with point (B), the
top surface of the cap.
FX1
100
°
C at 0.9 MPaG (9 barg),
212
°
F at 130 psig
Temperature Setting Range
1 MPa = 10.197 kg/cm
2
= 10 bar
Set Temperature
(˚F)
Operating pressure
(psig)
Set Temperature
(˚C)
Operating Pressure
(MPaG)
0.2
0.1
0.3
0.5
0.7
1
2.1
200
150
100
50
15
20
30
50
100
200
300
390
300
200
120
15 ˚C below saturated
steam temperature
27 ˚F below saturated
steam temperature
Operating Pressure
(psig)
Number of Turns of Adjusting Screw
Operating Pressure
(MPaG)
Number of Turns of Adjusting Screw
Set Temperature
(˚C)
Set Temperature
(˚F)
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
0.2
0.1
0.3
0.5 0.7
1.5
1
2.1
B
A
C
D
B
A
C
D
10
30
50
100 150 200 300
390
380
360
340
320
300
280
260
240
220
210
200
180
160
140
120
B
A
C
D
B
A
C
D
-2
1
/
2
+2
1
/
2
+3
1
/
2
+4
1
/
2
-1
1
/
2
+1
1
/
2
-
1
/
2
+
1
/
2
-2
-1
+1
+2
+3
+4
+5
0
+
-
-2
1
/
2
+2
1
/
2
+3
1
/
2
+4
1
/
2
-1
1
/
2
+1
1
/
2
-
1
/
2
+
1
/
2
-2
-1
+1
+2
+3
+4
+5
0
+
-
