THE IMPROVED SCHAAR
Sigmamotor RUBBER TUBING PUMP N e w l y designed w i t h hinged top to facilitate a n d simplify loading
MR-4368
The new hinged and utility to the can now be done viously required, tional circulating interchanged at
top adds further convenience Sigmamotor. Original loading in a fraction of the time pre and tubing lines from addi syslims can be inserted and will.
PUMPS LIKE THE HUMAN HEART! OPERATION: A series of cam-operated " f i n g e r s " press against the flexible tubing in sequence^ imparting positive uni-directional movement to the fluid. Rate of flow varies with motor speed, tubing size and external Conner tions. Cycle of fingers is timed so that tubing •• always closed at sum point, e l i m i n a t i n g net for valves.
Unique in design and application, the S l u M A M O l O K olicrs a completely '. new approach to pumping problems. Pumps all r; pes of liquids and gases through tubing withour danger of contamination or corrosion. Fluid does •nor contact pump paris, therefore no cleaning necessary — simply change "" tubing lead for different lluids. If desired, sever.il lluids may be pumped at the same time. T h e complete portable unit incorporating a Sigmamotor p u m p , driving motor, and .speed changer is ricommendrd to provide closely controlled flow antf variable output.
MAINTAINS VACUUMS OF 3 0 " OF MERCURYPRESSURES UP TO 25 LBS. P. S. I. FLOW CONTROL AND SPEED RANGE: Λι one .speed, many combinations of tubing sizes in the .setup allow for a wide range of output capacities. As many as 4 tubes at one time can be used in the pump. Close control of small flows is made pos sible by the speed changer. Flow rates from 60 c. c. per hour to 30 gal. per hour • can be obtained. Speed range is from 30 to 500 R. P. M. TUBING: Use a good grade of tubing, such as gum rubber,"Neoprene or Tygon. These have sufficient resilience to recover rapidly and satisfactorily at speeds up to 500 R. P. M. or better.
κ. « ι "" •
USE ONLY .Ii
FOLLOWING SIZES OF T U B I N G :
•
elïr
CONSTRUCTION: T h e S I G M A M O T O R is Both precision-built and rugged, requiring minimum servicing. Solid camshaft, hardened cam iaces, en closed needle bearings, and chrome-plated steel op erating fingers assure smooth running and long life: ADDITIONAL LITERATURE AVAILABLE ON SEQUESr
1/2"
Will Thirki.est
3/8" 3/8" 5/16" 1/4" 3/16"
1/8" 3 / 3 2 "
1/8"
1/16"
1/8"
1/16"
MR 4368 ·!*•.• vV\OTOR PORTABLE UNIT, complete w i t h S i • »: . ι ι ι p, Revco Model 142X speed changer, and I h ™ ι* all mounted on aluminum base. Motor i-r I I W ' 1 , ' l e $190.00 MR-4367 ,ιι Ι ι ν MR 436* innlr
ICVAMOTOR
J J n.
is
PUMP
MR-4368, but
SCHAAR AND COMPANY 754
ONLY,
with
with
4-inch V $75.00
explosion-proof $245.00 MR-4367
eomftiUU ^a&yta&xxy &$€Ufi*te*tt
L E X I N G T O N ST., C H I C A G O 7, ILLINOIS
For furtner information, circle number 27 A on Readers' Service Cart, page 51 A
V O L U M E 2 7 , NO. 5, MAY
1955
27 A
