Kv values

Size

3⁄4"

1"

11⁄2"

DN50

DN80

DN100

Kv

4.64

8.96

20.29

41.20

97.85

118.45

Spare parts

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

in broken line are not supplied as spares.

For conversion:

Stroke mm

Cv (UK) = Kv x 0.963

Cv (US) = Kv x 1.156

Available spares

Piston sealing ring set

3⁄4" to 11⁄2"

DN50 to DN100

3⁄4" to 11⁄2"

DN50 to DN100

C, F, E

C, D, E

A, C, E, F

A, B, C, D, E, J, H

P

Size

Stroke

Sizing

3⁄4"

2.7

See TI-GCM-09.

1"

11⁄2"

DN50

DN80

DN100

7.7

12.4

13.9

Piston set

Set of cover studs and nuts

4.3

5.9

Dimensions/weights (approximate) in mm and kg

Bronze screwed

Size

A

B

C

Weight

3⁄4"

97

54

58

1.2

1"

114

57

61

1.9

11⁄2"

B

C

151

70

Screwed

A

76

3.8

Flanged

A

Bronze flanged PN25

Size

A

B

DN50

201

144

Cast iron flanged PN16

Size

A

B

DN50

219

153

DN80

250

176

DN100

351

151

Detail of

piston ring

X

4.5.48

Y

J

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P047-04) supplied with the product.

Installation note:

The valve should be fitted in a horizontal line with the actuator

vertically below the line. Note that the ports are marked X, Z and O.

How to order

Example: 1 off Spirax Sarco DN50, TW 3-port self-acting control

valve having a bronze body and flanged connections to PN25.

A

E

G

C

A

P

D

G

P

E

Control valves

Self-acting controls

C

Weight

133

15.0

C

Weight

133

13.7

135

25.0

140

32.0

F

B

H

How to order spares

Always order spares by using the description given in the column

headed 'Available spares' and state the size and type of valve.

Example: 1 - Piston set for a Spirax Sarco DN50 TW 3-port

self-acting control valve.

B

C

C

TW Three-port Self-acting Control Valve for Liquid Systems

TI-P047-01 CH Issue 12

Valve size

3⁄4" - 11⁄2"

Valve size

DN50 - DN100