2.3 Pressure / temperature limits
Pressure bar g
Temperature °C
A
E
Steam
saturation
curve
C
F
F
B
D
G
G
DP27,
DP27E,
DP27R
and
DP27Y
DP27E
The product must not be used in this region.
The product should not be used in this region or beyond its operating range as
damage to the internals may occur.
A-D-E Screwed and flanged EN 1092 PN25, ASME 300 and BS 10 Table H
A-B-C Flanged ASME 150.
F-F-E The DP27G and DP27GY are limited to 120 °C.
G-G The DP27E is limited to 10 bar g @ 190 °C.
Note:
DP27 has a variable rate conical pressure adjustable spring fitted providing a downstream
pressure range of 0.2 - 17 bar g.
DP27Y has a pressure spring with a range of 0.2 - 3 bar g.
DP27R Maximum downstream reduced pressure 15 bar g. The control pressure signal to
the pilot diaphragm must be approximately 0.7 bar above the required reduced downstream
pressure.
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