Control valves

Self-acting controls

Capacities

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Dimensions/weights (approximate) in mm and kg

Weight

Size A

B

C

D

E

F

G

H TA10A TA10P

1⁄2"

70 16 58 38 120 72 13 170 1.06

1.08

3⁄4"

80 20 62 38 120 72 13 170 1.33

1.35

A

B

D

H

(TA10A)

Spare parts

C

E

(TA10P)

G

F

TA10P only

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

in broken line are not supplied as spares.

Available spares

Internal assembly

Control system (state type and temperature range)

How to order spares

A, B, C

D

Always order spares by using the description given in the column

headed 'Available spares' and state the size, type and temperature

range of the control valve.

Example: 1 - Internal assembly for a Spirax Sarco 1⁄2" TA10 steam

tracing temperature control valve.

Example of how to use the capacities chart

Where:

TA10

TA10A

TA10P

- Example load = 20 kg/h

- Upstream gauge pressure 5 bar = 6 bar abs.

Method:

- Draw a horizontal line from 6 bar abs.

- Draw a horizontal line from 20 kg/h

- Drop a vertical line from the 6 bar x critical pressure crossing point

C

B

D

D

A

until it crosses 20 kg/h horizontal.

- The K

v for valve selection is given at this crossing point as Kv 0.3

- From the P-band table below a 3⁄4" valve has 4°C P-band.

Kv at P-band in °C

Size 1°C

1⁄2"

0.18

3⁄4"

0.20

Operating temperature at design Kv = Set value - Xp

For conversion: Cv (UK) = Kv x 0.963

Cv (US) = Kv x 1.156

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

supplied with the product.

How to order

Example: 1 off Spirax Sarco 1⁄2" TA10 steam tracing temperature

control valve having screwed BSP connections supplied with

a TA10P range 2 temperature control system.

2°C

4°C

6°C

8°C

Maximum lift Kv

0.55 at 15°C Xp

0.87 at 15°C Xp

0.22

0.27

0.29

0.32

0.23

0.29

0.29

0.33

TA10A and TA10P Steam Tracing Temperature Control Systems

TI-P350-01 CH Issue 3

4.5.58

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