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Your cart is empty.NAVAC NEVK3 is a tool kit that includes two NAVAC NVR1 Valve Core Removal tools, one NAVAC NHB1 Refrigerant Hose, one NAVAC NHB2 Refrigerant Hose, and one NAVAC NMV1 Micron Vacuum Gauge. HVAC technicians use the NVR1 Valve Core Removal Tool to remove and replace a valve core without losing the refrigerant in the HVAC system. It can be used for both 1/4″ and 5/16″ flare fittings, is pressure-rated for R410A systems, and is vacuum-rated to 20 microns. NHB1 refrigerant hose connects 3/8" fittings to 1/4“ fittings, while NHB2 refrigerant hose connects 1/2" fittings to 1/4“ fittings. NHB1 and NHB2 Refrigerant Hoses both have a 1/2-inch large internal diameter and are 6 feet long. They can withstand 3200 psi burst pressure and will operate at 640 psi working pressure. They are also made with 4-layer construction for low permeation to ensure refrigerants don’t escape into the atmosphere during the process. These tools are used together by HVAC technicians for rapid recovery and evacuation. Having them in 1 kit can help you spend less money.