D o w e l l ' s S p e c i a l Tank Trucks, equipped with proportioning and pumping equip ment, bring solvents for chemical cleaning of industrial equipment to plant sites.
Monel handles dilute HCI day-after-day in Dowell equipment-scrubbing units Dowell Incorporated used to have a problem with the pumps on their spe cial tank trucks. The pumps circulate solvent from the tank trucks to the interior of in dustrial equipment to dissolve out rust and scale. The solvent usually has a dilute hydrochloric acid base. To pre vent corrosion of the plant equipment, specific inhibitors are used and the solvent is introduced under strict con trol of temperatures and exposure times. The pumps, however, were a differ ent matter. Centrifugal force and high velocities stripped protective coatings from impellers and nullified the effect of inhibitors inside the pump. Was there a durable, corrosion - resisting material that could withstand these
INCO I
t
A D I
c o n d i t i o n s ? D o w e l l ' s tests of m a n y m a terials provided an answer . . .
Monel* nickel-copper alloy Monel alloy, with its inherent resistance to dilute hydrochloric acid, is used by Dowell for pump impellers, stuffing box seals and shaft sleeves as well as for certain storage tank accessories. You, too, may find Monel nickelcopper alloy an answer to your diffi culty. Get the facts. Ask for Bulletin T-29, "Resistance of Nickel, Monel and Other High Nickel Alloys to Corrosion by Hydrochloric Acid, Hydrogen Chlo ride and Chlorine." It's yours for the asking. •IteglBtcrt'd trademark The International Nickel Company, Inc. 67 Wall Street
Monel···
New York 5, Ν. Υ.
for minimum
Heart of "Chemical Brush". . . Monel nickel-copper alloy impellers like this are used in Dowell's pumps to introduce cleaning solvents into industrial equip ment. They find that parts made of this alloy resist acidic and caustic solutions used in their operations.
maintenance
M A R K
For further information, circle number 22 A on Readers' Service Card, page 101 A
22 A
INDUSTRIAL AND ENGINEERING CHEMISTRY
