Control valves
SA422
Stainless Steel
Self-acting Temperature Control System
Self-acting controls
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2015
Description
The SA422 is an immersion type of self-powered control system
that incorporates sensor, actuator, set point adjustment / indicator
for use with the following valve types:-
2-port
KA, KB, KC, KX, KY, SB, SBRA, BX, BXRA,
BM, BMRA, BMF, BMFRA, NS, NSRA
3-port
TW
The sensor will need to be mounted through a union kit (available
as an optional extra) when immersed through the wall of a vessel
containing the fluid under control.
Available types
Set point adjustment at valve
SA422
For use on
2-port valves DN15 to DN80
3-port valves DN20 to DN50
Optional extras
Union kit
Direct immersion
TI-P380-01
CH Issue 4
Union kit
2
3
Z
Y
X
5
Dial adjustment
option
Comprising union nipple X, compression ring Y and gland nut Z
Dial adjustment
Materials
No. Part
1
Senor
2
Actuator
3
Capillary tube
4
Adjustment head
5
Union kit
Material
Stainless steel ASTM A269 TP 316
Stainless steel ASTM A269 TP 321
Stainless steel ASTM A269 TP 304
Polypropylene
Stainless steel
ASTM A582 303
1
4
Dimensions/weight (approximate) in mm and kg
Temperature ranges
SA422
Range 1
Range 2
Overtemperature protection
Capillary tube
Knob
Dial
A
A
C
397
428
165
A
D
Weight
-20°C to +120°C
+40°C to +170°C
55°C over set value
25
C
D
1.5
Standard length 2.4 m or 4.8 m.
Longer lengths to a maximum 6 m are available to special order.
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
supplied with the product.
On installations where the sensor is immersed directly into the
solution to which temperature control is required, we would not
recommend the unit be subjected to:-
Aqueous solutions containing chloride, fluoride, halogen salt,
hydrochloric acid or sulphuric acid.
How to order example:
1 - Spirax Sarco SA422 control system, temperature range 1,
having 2.4 m capillary, plus:-
1 - Union kit with NPT connections.
Application warning:
The above applies to complete immersion, liquid level lines and
spash zones.
4.5.56
