body can be left in the line while servicing the pump, eliminating
needless disconnecting of pipes.
ARMSTRONG circulating pumps have oversized shafts of special alloy
steel, machined to exacting tolerances. Shafts have integral thrust
heat treated to provide long life under severe duty conditions.
Balanced impeller of centrifugal design ensures maximum water
A tried and proven method of preventing water leakage,
the well-known “ARMSEAL” construction
is an often imitated feature of the ARMSTRONG circulator. Made
of long-lasting, hardwearing materials, it ensures many years of noise-free,
Models S-25 through S-57 and H-32 through H-54 feature
the unique ARMSTRONG shaft and bearing module which fits all of these
for ease of
serviceability and reduced inventory costs.
info please download the > .PDF Brochure