Vacuum Pump Intake Port replacement with Built-in hand Valve check valve: from 3/8 NPT to 1/4 and 3/8 inch Flare

Vacuum pump Intake Port replacement : with hand valve: from 3/8 NPT to dual 1/4 and 3/8 inch SAE male Flare and a built-in hand valve, ball valve, for system isolation. This valve will prevent the vacuum pump oil being sucked out of the vacuum pump, to protect what you are doing so it will prevent it from messing up by the vacuum oil. Or if you are in the HVAC job, this intake port with the check valve will isolate the pump from the HVAC system for vacuum hold test without the problem of getting the vacuum pump oil to the AC system when the pump is turned off, if you are an experienced technician, you know what I am talking about.