44
Control systems Self-acting controls
Valve selection data Table 6 Normally closed valves for cooling applications For pressure temperature relationships please refer to the pressure/temperature charts in Table 4, page 6. Gunmetal
Size and pipe connections
Control system options
Valve model
Screwed BSP/NPT
Flanged PN25/ANSI 150
Body design rating
Balanced Kvs Maximum P (bar)
Stroke mm
SA121 SA122 SA128
BMF2
½" ½" ¾"
PN25
0.59
10.3
3.2
•
•
•
PN25
2.58
12.0
3.2
•
•
•
SBRA Optional bleed available
PN25
3.86
7.0
4.0
•
•
•
1 "
PN25
6.80
4.7
5.0
•
•
•
2 ½"
DN65
PN25
65.00
2.7
9.5
•
NRSA Double seated valve KY51* Balanced by phosphor bronze bellows. Optional bleed available
3"
DN80
PN25
94.00
2.0
9.5
•
1 ¼"
PN25
•
16.48
9.0
8.0
•
1 ½"
PN25
•
23.70
8.2
9.0
•
4.5 10
2 "
PN25
•
34.00
6.9
9.5
•
Cast iron
Size and pipe connections
Control system options
Valve model
Screwed BSP/NPT
Flanged PN16
Body design rating
Balanced Kvs Maximum P (bar)
Stroke mm
SA121 SA122 SA128
BMFRA
½" ½"
PN16
0.59
10.3
3.2
•
•
•
DN15
PN16
2.90
12.0
3.2
•
•
•
¾"
DN20
PN16
4.64
7.0
4.0
•
•
•
KX31 Screwed and KX33 flanged. Optional bleed available
1 "
DN25
PN16
9.80
3.5
5.6
•
•
•
1 ¼" 1 ½"
DN32
PN16
16.48
2.3
8.0
•
•
•
DN40
PN16
23.70
1.7
9.0
•
•
•
2 "
DN50
PN16
34.00
1.1
9.5
•
•
•
* Please note: The KY51 can also be used on water applications where high P conditions exist.
Cast carbon steel
Size and pipe connections
Control system options
Body design rating
Maximum P (bar)
Stroke mm
Valve model
Flanged
Balanced Kvs
SA121 SA122 SA128
PN25
PN40
BMRA
DN15
PN25
0.59
10.3
3.2
•
•
•
TI-S21-07 CTLS Issue 6
Page 10 of 13
2-Port Self-acting Temperature Control Valve Selection for Heating and Cooling Applications
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