Kv values

Size

1"

Kv

9.80

For conversion:

Capacities

11⁄4"

16.48

Cv (UK) = Kv x 0.963

11⁄2"

2"

23.70

34.0

Cv (US) = Kv x 1.156

Spare parts

The spare parts available are shown in solid outline. Parts drawn

in broken line are not supplied as spares.

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

Size

A

C

D

D1

KX

Weights

KY

1

"

13

6

8

0

108

4.1

0

-

Available spares

Valve seat assembly

KX51 Set of all gaskets

1"

A1, D1, E, J, F, L1

L1, L2, E

E, L1, L2, B, U, C

S

A1, B, C, D1, E, L1, U

H, G, L1, B, C, U

B, C, U, E, G, L1, L2

S

11⁄4"

144

11⁄2"

150

2"

180

KX51

1"

80

112

90

112

100

112

C

A

D

C

154

154

154

6.32

7.62

9.50

7.25

8.57

10.60

Valve seat assembly

KY51

Bellows and stem assembly

Set of all gaskets

Set of bonnet studs and nuts (set of 4)

How to order spares

KX51

11⁄4" - 2"

KY51

11⁄4" - 2"

KX51

11⁄4" - 2"

D

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 11⁄2" KY51

self-acting control valve.

S

S

J

G

H

B

U

C

D1

E

L1

L2

Control valves

Self-acting controls

D1

A

E

L1

L2

A1

KY51

D1

C

A

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 2", KY51 self-acting control valve with

bronze body having screwed BSP connections.

TI-P078-03 CH Issue 10

KX51 and KY51 Bronze Self-acting Control Valves

Page 3 of 3

J

F

A1

F

X

11⁄4 - 2"

Set of bonnet studs and nuts (set of 4)

KX51

1"

4.5.42