Amtrol® ASME tangential air separators are designed to create a low velocity vortex that separates and removes entrained air from fluids circulating in closed, heating and chilled water systems. Available in 1 in to 24 in sizes with optional stainless steel strainer to collect unwanted system debris, all Amtrol® tangential air separators are made in the USA at our ISO 9001:2008 registered facilities and meet all ASME Section VIII, Division 1 Standards.