Armstrong’s engineered products offer savings in space and installation costs. Innovative design, combined with
engineering knowledge, manufacturing excellence and full service capability deliver an unbeatable range of
products for the fluid flow marketplace.
Engineered Products
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Suction Guides
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Flo-Trex Valves
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Vortex Air Separators
Armstrong Vortex Air Separators eliminate entrained air from heating and cooling systems,
improving heat transfer efficiency. Armstrong’s Models VA/VAS from 2 to 6 inches (51 to 152 mm)
are available in cast iron. All sizes from 8 to 24 inches (203 to 610 mm) are made of fabricated
steel. Sizes larger than 24 inches (610 mm) are also available as a custom order.
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Series AX, AX-V, L Expansion Tanks
Armstrong’s precharged diaphragm and bladder-type tanks separate air and water for space savings
and improved system operation. These tanks are available in vertical and horizontal formats, in sizes
up to 80% smaller than conventional tanks. Both residential and ASME code vessels are available.
Armstrong’s Model SG Suction Guides are designed for direct mounting to the suction side of horizon-
tal or vertical pumps. Space savings are achieved through elimination of long radius elbow, suction
entrance pipe and conventional Y strainer. Units are available with a cast iron body and cover in sizes
2 to 20 inches and supplied with fine mesh start-up strainer and permanent stainless steel strainer.
Model FTV Flo-Trex triple function valves are designed for installation on the discharge side of
centrifugal pumps and combine the features of a check valve, throttling valve and a shut-off
valve. The convertible body design permits the valve to be changed on site from a straight to
angled configuration. Armstrong Model FTV Flo-Trex valves are available in sizes from 2
1
/
2
to 12
inches (64 to 305 mm) and in two different configurations: ductile iron valve body with standard
grooved end connections or cast iron body with hard flanged connections.
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Dirt & Air Separator
When system water is heated, air is released within an HVAC system, which affects the performance
of fluid flow or heat transfer equipment. Armstrong Dirt & Air Separators (DAS) are designed to
eliminate entrained air and suspended dirt particles associated with the start-up and maintenance of
hydronic systems. The DAS incorporates a robust stainless steel coalescing medium which directs
dirt particles of all sizes to the collection chamber, at the bottom, and allows the air to be released
through an air vent at the top.
