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MC
Marley
Specifications
Stainless Steel Options
Stainless Steel Collection Basin:
12.1: Replace paragraph 12.1 with the
following: The collection basin shall
be heavy-gauge Series 300 stainless
steel. Suction connections shall be
equipped with stainless steel debris
screens. A factory installed, float oper-
ated, mechanical make-up valve shall
be included. An overflow and drain
connection shall be provided in each
cell of the fluid cooler. The basin floor
shall slope toward the drain to allow
complete flush out of debris and silt
which may accumulate. All steel items
which project into the basin (anchor
clips, etc.) shall also be made of stain-
less steel.
All Stainless Fluid cooler
6.1
Replace paragraph 6.1 with the fol-
lowing: Except where otherwise spec-
ified, all components of the fluid cooler
shall be fabricated of heavy-gauge,
series 300 stainless steel. The fluid
cooler shall be capable of withstanding
water having a chloride content (NaCl)
up to 750 mg/L; a sulfate content (SO
up to 1200 mg/L; a calcium content
(CaCO
) up to 800 mg/L; silica (SiO
3
up to 150 mg/L; and design operat-
ing ranges up to 10°C. The circulating
water shall contain no oil, grease, fatty
acids, or organic solvents.
4.1
Replace paragraph 4.1 with the fol-
lowing: Coil(s) shall consist of fully
welded box headers with serpentine
coils. All coil components shall be
assembled from series 300 stainless
steel. Coils shall be tested to 2757
kPa air pressure while immersed in
water. Maximum operating design pres-
sure shall be 1551 kPa. The coil shall be
designed for free drainages of fluid at
shutdown.
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Specifications: Options
Fluid Cooler
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4
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2
Specification Value
The cold water basin is the only part of the fluid cooler that is subject
■
to periods of stagnant water, concentrated with treatment chemicals
and customary contaminants. It is also the most expensive and dif-
ficult part of any fluid cooler to repair or replace. For these reasons,
many customers—particularly those who are replacing older fluid
coolers—choose to specify stainless steel cold water basins.
For pure resistance to corrosion—coupled with the capability to meet
■
stringent fire and building codes—there is no substitute for stainless
steel. No paints or electostatically-applied coatings, however exotic
they may be, can match stainless steel's ability to withstand adverse
operating conditions.
For process fluids that are not compatible with the standard galva-
■
nized steel construction, stainless steel offers you the ultimate in cor-
rosion resistance and long life. The thermal performance rating shall
be based on the Cooling Technology Institute certified performance
rating adjusted for the thermal properties of stainless steel.
20
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