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ESPA-S Series

Expanflex ESPA-S Vortex type Air Separators with strainer eliminate air quickly and efficiently from open and closed loop heating/cooling systems. Water enters and exits through unique “tangential” connections, which promote a low velocity swirling effect in the center of the unit.

Natural centrifugal forces allow the heavier air-free water to move towards the outer edges while entrained air is captured within the “eye” of the vortex and released out of the top of the separator. The water then exits near the bottom of the unit, bubble free, protecting the system against the noise, corrosion and damage commonly caused by entrained air.

Features ESPA-S Series

Model Max. GPM Diameter (in./mm)
ESPA2S 56 2/51
ESPA2.5S 90 2.5/64
ESPA3S 190 3/76
ESPA4S 300 4/102
ESPA5S 530 5/127
ESPA6S 850 6/152
ESPA8S 1900 8/203
ESPA10S 3600 10/254
ESPA12S 4800 12/305
ESPA14S 6100 14/356
ESPA16S 8000 16/406
ESPA18S 9700 18/457
ESPA20S 12000 20/508
ESPA22S 15000 22/559
ESPA24S 17000 24/610


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