Armstrong 4302 Series Manual - Halaman 2

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Halaman Cetak
Smart pumps
for the
commercial
hvac market.
•
Armstrong Vertical In-Line pump, the best design for hvac
systems, introduced in 1969.
•
Armstrong dualARM Vertical In-Line pump, introduced in 1994.
•
dualARM Series 4302 & 4382 contain all the features and
advantages of two Armstrong time proven Vertical In-Line pumps,
in one casing.
Adding Value to Hydronic Systems
Floor Space Value:
In a typical system, for example 1000 USgpm flow at 50 ft head (63.1 L/s at 15.2 m), the dualARM needs only one quarter of the space
required for two end suction base mounted pumps and one eighth the space required for two split case horizontal pumps.
Installation Value:
Vertical In-Line pumps become an integral component of the piping system. This configuration eliminates the need for flexible
connectors, inertia bases, grouting and field alignment.
Maintenance Value:
Mechanical seals require the greatest amount of maintenance in any pump. Service is performed on any Vertical In-Line pump without
removing the casing from the piping. The Series 4302 split-spacer coupling design allows the mechanical seals to be serviced without
disturbing the pump or motor connections.
System Value:
Standby and parallel pump systems may now be designed using only one pump piping set. Two pumps in a single large port casing
allow both pumps to operate simultaneously, in true parallel fashion, with no loss in single pump efficiency.
Design Value:
dualARM Vertical In-Line pumps, designed with a swing split-flapper valve in the discharge port, prevent liquid recirculating when only
one pump is operating. Unique Armstrong isolation valves allow one pump to be isolated and removed for service while the second
pump remains in operation.
Series 4302 , shown with one guard removed to reveal outside balanced
seal, and a cutaway to show the isolation valve.