Control valves

Self-acting controls

Page 5 of 12

Table 4 Pressure/temperature limits for different valve materials

Note: Materials for the various valve types are shown in Tables 5 and 6 on the following pages.

Control valve body material

Gunmetal

Cast iron

Cast carbon steel

Stainless

steel

Body design conditions

PN25

PN16 PN25 PN40 PN40

Maximum design temperature

260°C

220°C 300°C 300°C 260°C

Maximum cold hydraulic test

38 bar g

24 bar g 38 bar g 60 bar g 60 bar g

Use a spacer for use in this region

Steam satu ration curve

Gunmetal

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Note: The KB51 and

KY51 control valves

have a maximum

design temperature

limit of 232°C.

The product

must not be

used in this

region.

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Pressure bar g

Steam saturation curve

Cast iron

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The product

must not be

used in this

region.

Note: The KB43 and

KY43 control valves

have a maximum

design temperature

limit of 232°C.

The product

must not be

used in this

region.

Note: The KA61 and

KA63 and KC63

control valves have a

maximum design

temperature limit of

232°C.

The product

must not be

used in this

region.

Pressure bar g

The KA43 and the KC43 can be used

in this region when coupled to a spacer

Steam saturation curve

Cast carbon

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steel

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Pressure bar g

Use a spacer for use in this region

Steam saturation curve

Stainless

steel

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Pressure bar g

2-Port Self-acting Temperature Control Valve Selection

for Heating and Cooling Applications

TI-S21-07 CH Issue 1

Page 5 of 12

4.5.6

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