Control valves

Desuperheaters

Which desuperheater is right for my application?

This is a general guide and does not represent every option available.

Please contact us if you have any queries regarding selection for your specific application.

Yes

No

Yes

No

Yes

No

No

Start

Are process parameters

relatively fixed?

Turndown < 2:1

Is residual superheat?

> 75 °C

No

Yes

SND or STD

Is turndown?

< 4:1

VTD or SAD

without recycle

No

Is turndown?

< 5:1

Yes

Yes

Is application part of a

pressure reducing station?

No

Yes

Is turndown?

< 50:1

Is application part of a

pressure reducing station?

Is it a vertical installation?

Is auxillary steam available

as an atomising source?

No

Is auxillary steam available

as an atomising source?

SAD

without recycle

SAD

with recycle

Consider a number of

appropriate units in

parallel

Yes

Yes

Yes

No

Sizing and selection software

It is necessary to use our online sizing and selection software so that the desuperheater can be correctly specified and ordered.

The software will generate a desuperheater data sheet and general assembly detail drawing of the resulting product. Please refer

to TI-P475-06 'Desuperheater Online Programme Sizing Guidance' for further information.

TI-P475-01 CH Issue 3

Page 7 of 9

Direct Contact Desuperheaters

4.8.8