KROHNE DK 32 Purge EN - Manual (Page 28)

7
TECHNICAL DATA
28
DK32
www.krohne.com 04/2011 - 4000898801 MA DK32 Air purge set R02 en
On - Off valve On - Off valve On - Off valve On - Off valve Swagelok®
Flow Data at 20°C (70°F)
Check valve Check valve Check valve Check valve
INFORMATION!
Swagelok® ball valves are designed to be used in a fully open or fully closed position.
Valves that have not been cycled for a period of time may have a higher initial actuation torque.
Packing adjustment may be required during the service life of the valve to prevent leakage.
1 on
2 off
Flow Coefficient (C
v
) Pressure Drop to Atmosphere (Δp), psi (bar)
10 (0.68) 50 (3.4) 100 (6.8)
Air Flow std ft3/min (std L/min)
0.90 10 (280) 27 (760) 48 (1300
INFORMATION!
For valves not actuated for a period of time, initial cracking pressure may be higher than the set
cracking pressure.
Check valves are designed for directional flow control only. Swagelok check valves should never
be used as code safety relief devices.
Figure 7-2: Flow Data at 20°C (70°F)
1 Inlet pressure
2 Air flow
MA_DK32_Purge_R02_en_898801_PRT.book Page 28 Wednesday, April 6, 2011 3:01 PM