Control valves
Self-acting controls
Kv values
Size
KX and KY
For conversion: Cv (UK) = Kv x 0.963 Cv (US) = Kv x 1.156
Capacities
For saturated steam sizing capacities see TI-GCM-08.
For water valve sizing capacities see TI-GCM-09.
Dimensions/weights (approximate) in mm and kg
KX43
C Weight
106
4.4
106
6.4
108
8.1
112
8.8
112
9.8
112
14.7
Spare parts
The spare parts available are shown in solid outline. Parts drawn
in broken line are not supplied as spares.
Available spares
DN15 DN20 DN25 DN32 DN40 DN50
2.90
4.64
9.80 16.48 23.7
34.0
A
A1, D1, E, J, F, L1
L1, L2, E
E, L1, L2, B, U, C
Set of bonnet studs and nuts (set of 4)
S
Valve and seat assembly
Set of all gaskets
(DN25)
(DN32 - DN50)
KX43
Always order spares by using the description given in the column
headed 'Available spares' and state the size and type of valve.
Example: 1 - Valve seat assembly for a Spirax Sarco DN40 KY43
self-acting control valve.
Valve and seat assembly
Bellows and stem assembly
Set of all gaskets
Set of bonnet studs and nuts (set of 4)
S
A1, B, C, D1, E, L1, U
H, G, L1, B, C, U, J
B, C, U, G, L1, L2
PN25
ASME ASME BS 10
150
300
H
KY43
How to order spares
PN40
Size
A
DN15 130
DN20 150
DN25 160
DN32 180
DN40 200
DN50 230
A
A
A
B
124
130
130
68
142
150
146
68
156
162
162
80
180
180
178
80
198
202
198
90
228
232
228
100
C
KX43
KY43
S
J
G
H
A1
D1
S
J
F
B
A1
D1
U
C
L1
B
A1
E
KY43
Size
A
DN32 180
180
DN40 200
198
DN50 230
228
PN25
PN40
ASME ASME BS 10
150
300
H
C Weight
154
9.2
154
10.2
154
15.1
A
A
A
B
180
178
80
202
198
90
232
228
100
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
(IM-S21-01) supplied with the product.
Installation note:
The valve should be fitted in a horizontal line with the actuator
vertically below the pipeline.
How to order
Example: 1 off Spirax Sarco DN50 KX43 self-acting control valve
having flanged EN 1092 PN40 connections.
L2
TI-P078-05 CH Issue 7
KX43 and KY43 Steel Self-acting Control Valves
Page 3 of 3
4.5.38
