Yellow Jacket® TITAN test and charging manifolds are made from forged aluminum alloy for increased strength and reliability. Offers lightweight handling with durability for repeated, rugged use. Large, easy-to-read 3-1/8 steel cases offer 1% accuracy for Class 1 gauges. Allows front access for easy recalibration. 4 hose connections enable connection to hi/lo sides, refrigerant tank and recovery unit or vacuum pump for operation without switching hoses. Double O-ring piston offer reliable, long lasting service. 3/8 vacuum port allows use with larger hose to cut evaluation time. 100-mesh in-line filter is located on all flare fittings to help keep out particulate materials. Contoured, color-coded, easy-grip handles offer positive control and easy identification. Sight glass allows clear viewing of refrigerant movement during operation.