Flowserve HV 205 - Manual (Page 12)

12
Explanatory Notes
– continued –
Technical Data
Pressure/Temperature Ratings of Bottom Valves
Nominal pressure PN [bar] 25
Test pressure [bar ] 37.5
Temperature range for valve plug seal CR [°C] – 40 to + 50
Temperature range for valve plug seal PTFE [°C] – 50 to + 50
Connection of bottom valve body
Socket-weld ends for manifold
with O. D. 88.9 mm
Spring pressure on valve plug [N] 250 ± 30
Lift of valve plug [mm] > 22.5
Drag coefficient
ζ
Loading Unloading
3.3 2.8
Attention
For pressure/temperature ratings of the bottom valves see name plate.
Name plate drawing Name plate specifications
Type of bottom valve
Type approval
GESTRA manufacturing no.
Test pressure
Type of valve plug seal
used in valve head
TÜ. AGG.
Manu.- no.:
P
test
: 37.5bar
T
min.
: - 50°C valve plug seal PTFE
T
min.
: - 40°C valve plug seal CR
GESTRA HWV
MADE BY GESTRA