rev.1.1 Page 7-11
7.5 DRAINS & VENTING
Drains should be designed to carry away 20 gpm (4.54 m
3
/hr) Product flow, 0.40 gpm (90 L/hr)
Electrode Outlet flow, and 1.97 gpm (0.45 m
3
/hr) Concentrate Bleed flow for each MK-2E, MK-
2Pharm or MK-2PharmHT Stack; and 6.7 gpm (1.52 m
3
/h) Product flow, 0.40 gpm (90 L/hr)
Electrode Outlet flow, and 0.91 gpm (0.21 m
3
/hr) Concentrate Bleed flow for each MK-2Mini
or MK-2MiniHT Stack™.
The electrode stream must be vented as it contains small quantities of hydrogen, oxygen
and possibly chlorine gas. (A 2:1 mixture of hydrogen and oxygen gas is produced at a
maximum rate of about 11.4 ml/amp/minute (hydrogen, dry gas at 25 °C, 1.0 atm) Ensure
ventilation maintains the hydrogen gas levels below 4%.
Drains should be designed so that the E-Cell Stack™ cannot drain while in Standby.
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