12A Water Still 2-3
Thermo Scientific
Section 2
Introduction
Water Supply
Requirements
We recommend one of the following options for supplying water to
operate your MP-12A Water Still.
Caution
Do not use NaCl regenerated water softeners to supply boiler feed
as alkali attack will shorten heater life.
s
OPTION #1
A single, untreated cold water supply. The supply must be capable of
providing a minimum of 30 gallons per hour at a pressure of 20-100 psi
and be located within 4 feet of the water still. You must provide a shut
off valve and reducer as shown in Figure 2-3.
With Option #1, approximately 30 gallons of untreated water will be
used per hour in the cooling section of the still, 3 - 4 gallons of this
water will be used as boiler feed after pretreatment in the deionizer sec-
tion. Water connections are discussed on Section 4.
OPTION #2
An untreated cold water supply plus a source of RO, demineralized or
previously distilled water. The untreated supply must be capable of pro-
viding a minimum of 26 gallons per hour at a pressure of 20-100 psi
and be located within 4 feet of the water still. The treated supply must
be capable of providing 3 - 4 gallons per hour and be located within 4
feet of the water still. You must provide a shut-off valve and reducer at
each water supply (see Figure 2-3).
With Option #2, approximately 26 gallons of untreated water will be
used each hour for cooling. The second (treated) water supply of 3 - 4
gallons per hour will be used as boiler feed after polishing in the dem-
ineralizer section of the MP-12A. Water connections are discussed on
Section 4.
An open or atmospherically vented drain located lower than the still is
necessary to allow for gravity flow. We supply a 5 foot length of 1/2" I.D.
vinyl tubing for the drain. Additional tubing may be purchased from your
distributor.
Drain
Figure 2-3.
Shut-off Valve
