System Design
How To Recharge an AC System EricTheCarGuy

Refrigerant R-502, R-410a, R-12, R-404a, R-22. titan 4-valve test and charging manifold gauge. Features Large, easy-to-read 3-1/8' (90 mm) steel case red and blue, 1% accuracy (Class 1) gauges Front access for easy field recalibration Double O ring piston for reliability and long service life Exclusive 100 mesh filter in-line on all flare fittings helps keep out particulate material and extend the life of the seats Contoured easy-grip handles for positive control color-coded for ready identification Sight glass to easily view refrigerant movement and condition during charging and recovery Optional protective gauge boots available Heavy duty hook won't pull out Also available with 3-1/2' (80 mm) red and blue liquid-filled gauges Manifold and hose holder fittings 1/4'-3/8'-1/4'-1/4' unless otherwise identified Made in the USA.