Armstrong’s horizontal pumps are designed for dependable, continuous service in a wide range of heavy-duty
industrial and commercial applications including: HVAC, machinery cooling and product transfer, pollution control
systems and powerhouse auxiliary services.
Horizontal Pumps
Armstrong offers a comprehensive range of single-stage, end suction, radially-split
centrifugal pumps designed for a wide variety of applications. Armstrong base
mounted pumps feature a self-venting casing to prevent air binding, heavy duty
bearings that are typically sealed and lubricated for life, and a back pull-out bearing
frame for easy removal during servicing. Standard features include silicon carbide
mechanical seals, OSHA compliant coupling guard and free-standing base designed
to ANSI/HI 1.3.5 rigidity standards. The units are available in bronze-fitted and all
iron construction.
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Base Mounted Series 4030
The Armstrong Series 4270 is a close coupled, motor mounted pump that is available
in bronze-fitted and all bronze construction. All models provide tapped openings for
venting, draining and gauge connections. All units feature heavy-duty, permanently
lubricated motor bearings, Viton®/carbon/ceramic seals as standard, non-ferrous
engineered resin impeller and a stainless steel shaft and faceplate.
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Motor Mounted Series 4270
Armstrong Series 4280 pumps are a motor mounted version of the horizontal end suction
pump, with flanged connections, and a radially-split volute with center-line discharge. The motor
features heavy-duty, grease-lubricated ball bearings. All units include a self-lubricating silicon
carbide mechanical seal and cast bronze balanced impeller designed for smooth
performance and long life. Available in bronze fitted and all iron construction.
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Motor Mounted Series 4280
The Armstrong Series 4600 is a full featured Horizontal Split Case (HSC) pump –
based on the ‘tilted parting’ concept to minimize turbulence at the eye of the impeller
with its straight laminar approach. This design provides maximum efficiency and also
results in the lowest profile and smallest footprint of any HSC. All units feature car-
tridge seals and bearing removal nuts for ease of maintenance.
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Horizontal Split Case Series 4600
