Edwards EXT Series - Cooling-Water; Maximum Allowed Rise in Backing Pressure against Time for Controlled Venting: System Pressure (Mbar;Pa) against Time (S); Technical Data

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Technical data
B753-03-880 Issue F
Figure 3 - Maximum allowed rise in backing pressure against time for controlled venting:
system pressure (mbar/Pa) against time (s)
2.5 Cooling-water
The following cooling water specification corresponds to a typical high-quality drinking water specification. Check
with your water supply authority if you are in doubt about the quality of your supply.
Quality Mechanically clean and optically clear with no deposits or turbidity.
pH value 6.0 to 8.0
Maximum calcium carbonate concentration 75 parts per million
Maximum chloride concentration 100 parts per million
Minimum oxygen concentration 4 parts per million
Minimum water-cooling flow rate (at 15 °C) 15 l h
-1
Water temperature See Table 1
Maximum water pressure 5 bar (gauge), 73.5 psig, 6 x 10
5
Pa
Materials exposed to cooling water Nickel plated brass
Table 1 - Technical data
Parameter EXT255H EXT255Hi EXT255HVi Notes
Mass
DN100ISO-K inlet flange 5.6 kg 5.6 kg 6.5 kg
DN100CF inlet flange 8.2 kg N/A N/A
Inlet-flange DN100ISO-K/
DN100CF
DN100ISO-K DN100ISO-K
Outlet-flange DN25NW DN25NW DN25NW
Vent-port 1/8 inch BSP 1/8 inch BSP 1/8 inch BSP
Interstage-port - DN25NW DN40NW
Purge-flange DN10NW
*
DN10NW
*
DN10NW
*