D o w e l l ' s S p e c i a l T a n k Trucks , e q u i p p e d with proport ioning and p u m p i n g equip­ment , b r i n g solvents for chemical c leaning of industrial equipment to p lan t sites.

Monel handles dilute HCI day-after-day in Dowel! equipment-scrubbing units

Do well Incorporated used to have a problem with the pumps on t h e i r spe­cial tank trucks.

The pumps circulate solvent from the tank trucks to the interior of in­dustrial equipment to dissolve o u t rust and scale. T h e solvent usually has a dilute hydrochloric acid base. T o pre­vent corrosion of the plant equ ipment , specific inhibitors are used a n d the solvent is introduced under s t r i c t con­trol of temperatures and exposure t imes.

The pumps, how ever, were a differ­ent matter. Centrifugal force a n d high velocities stripped protective coat ings from impellers and nullified the effect of inhibitors inside the p u m p . Was there a durable, corros ion-res is t ing material that could withstand these

wcb, M o n e l < T I A O E M A S K

condi t ions? Dowell 's tests of many ma­terials provided an answer . . .

Mone l * nickel-copper al loy

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, m a y find Monel nickel-copper alloy a n answer to your diffi­culty. Get the facts. Ask for Bulletin T-29, "Resistance of Nickel, Monel and Other High Nickel Alloys to Corrosion by Hydrochlor ic Acid, Hydrogen Chlo­ride a n d Chlorine." I t 's yours for the a s k i n g . •Registered trademark

The International Nickel Company, Inc. 67 Wall Street New York 5, N. Y.

Heart of "Chemical Brush/J. . . Monel nickel-copper alloy impellers l ike this are used in Dowell's pumps to introduce c leaning solvents into industrial equip­ment . They find that parts made of this alloy resist acidic and caustic solutions used in their operat ions.

for minimum maintenance

A U G , 19, 1957 C & E N 6 3