The new Checkfluid Pushbutton valve samples pressurized fluid systems up to 750 psi. more quickly and accurately than drain or other methods. The KP can take an active sample directly from an engine, transmission or hydraulic system without probes, avoiding the high cost of sample retakes. The barbed spout is free to rotate 360 degrees and can also attach PVC tubing for the best position to install and sample. The main seal has been tested leak-free and reliable for 1,000,000 cycles at 7800 psi., and the back dust cover seal is rated to 750 psi. A unique safety lockout nut prevents accidental activation. The sleek compact design wtih no exposed springs is available in a range of thread sizes and seals.