Quick Exhaust Valve. Best suitable for high-speed drive cylinder. Intake & Exhaust port: Push-in Fitting, Output port: Thread Tube Exhaust (EQ Series), Intake port: Thread, Output & Exhaust port: Push-in Fitting Tube Exhaust (EQ Series), Intak Port: Push-in Fitting, Output Port: Thread, Exhaust PortL Exhaust Throttle (EQ Series), Union Straight Exhaust to Air (EQU Series), Union Straight Tube Exhaust (EQY Series), Union Straight Exhaust Throttle to Air (EQE Series), Plug-in Open to Air Exhaust (EQJ Series), Cylinder Direct Attachment with Exhaust Female Thread (EQH Series), Cylinder Direct Attachment with Exhaust Throttle (EQH Series)