General information Product limitations
7
E 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:
E
The product should not be used in this region because...(the actual reason will depend on the product being described).
Pressure bar g
F If a product should not be used above a certain temperature, or an ancillary product is required to operate above a certain limit then it will be tinted and worded appropriately. e.g.:
F
High temperature bolting required for use in this region (the actual reason will depend on the product being described).
Pressure bar g
An example of a finished diagram:
A
2
1
4
5
Steam saturation curve
3
C
B
Pressure bar g
1
The product must not be used in this region. High temperature bolting is required for use in this region.
2 3
7.4 2
The product should not be used in this region or beyond its operating range as damage to the internals may occur.
4 A - C Flanged end connections EN 1092 PN16.
5 A - B Flanged end connections EN 1092 PN25 or ANSI B 16.5 Class 300.
Warning: Care must also be taken concerning Differential pressure limits and these are tabulated in addition to the 'Product/temperature limits' diagram.
11.4.3
TI-GCM-02 CM Issue 7
Page 2 of 4
Pressure / Temperature Limits
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