General information

Product limitations

E

1

2

3

4

5

11.4.7

F

2

Steam

saturation

curve

4

3

C

B

5

1

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E

F

Sometimes end connections or internal components may

restrict the operating envelope of the product below the

standard rating. Care must therefore be taken in selecting

appropriate end connections. In this case the product

should not be used in area 'e' and will be worded:

The product should not be used in this region

because...(the actual reason will depend on the

product being described).

Ifaproductshouldnotbeusedaboveacertaintemperature,

or an ancillary product is required to operate above a certain

limit then it will be tinted and worded appropriately. e.g.:

High temperature bolting required for use in this

region (the actual reason will depend on the product

being described).

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An example of a finished diagram:

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Page 2 of 5

TI-S24-41 CH Issue 3

A-C

A-B

The product must not be used in this region.

High temperature bolting is required for use in this region.

The product should not be used in this region or beyond its operating range as damage to the internals may occur.

Flanged end connections EN 1092 PN16.

Flanged end connections EN 1092 PN25 or ANSI B 16.5 Class 300.

Pressure / Temperature Limits for Control Valves

T

e

m

p

e

r

a

t

u

r

e

°

C

T

e

m

p

e

r

a

t

u

r

e

°

C

T

e

m

p

e

r

a

t

u

r

e

°

C