Reservoir Breather Valve - 2 PSI

High flow steering pumps are prone to cavitation which results in both excessive pump whine/noise as well as reduced pump life. Adding positive pressure to a reservoir greatly reduces cavitation in high flow pumps, especially at higher engine speeds. The Radial Dynamics 2 PSI Reservoir Breather Valve allows thermal expansion of steering fluid to compress air in the top of a steering reservoir up to 2 PSI maximum positive pressure, relieving excess pressure to help protect the steering pump shaft seal*. This valve additionally features a free-flowing reverse check valve that allows ambient air to re-enter the reservoir when steering fluid cools and returns to its original fill height, preventing a potential vacuum condition in the reservoir upon next vehicle startup.   Unlike other remote reservoir pressure valves which can generate an oil mist in the engine bay if oil overflows into the vent tubing, the Radial Dynamics breather valve uses push lock fittings in and out so that any poten