ITT has unveiled its new Bell & Gossett Primary-Secondary Header (PSH), which is a combination air separator and manifold that creates independent primary and secondary circuits. The unit includes a purge valve, allowing users to easily remove any debris collected at the bottom of the vessel. It has a working pressure of 150 psi and an operating temperature ranging from 32°F to 220°F. Other features include an air vent to release air trapped in the system, a reliable steel body, brass air vents and drain valves.