Packed line valves are designed for a multitude of uses in refrigeration systems. When installed properly, these handy, forged brass, packed angle valves provide easy accessibility, and serviceability for the refrigeration system. All packed angle valves are provided with a brass seal cap. The 617A series charging and purging valves are designed to be installed on the branch or run of a solder-type tee. The valve can be readily positioned for easy access. These valves are shipped loosely assembled for easy removal of parts prior to soldering. Reassemble after installation with a standard 3/8" square wrench. Specialty packed angle valves are designed specifically for the Refrigeration Rack industry. The 600AX7-JB is designed for use with the transducer, and offers connections to monitor and verify transducer readings and pressures. The 600B-6U6 Oil Leveler valve offers a 3/8" SAE flare swivel for mounting on the oil leveler and a 3/8" SAE side outlet for oil line connection. The 600B-4U4 SORIT or EPR Pilot Isolation valve uses the same type of connections, in 1/4" SAE, as the 600B-6U6. The valve is designed for an inlet connection to the EPR or SORIT valve, and the outlet to connect to the pilot line of the suction header. All Superior packed angle valves incorporate a special packing that has been developed for use with all refrigerants.For more information,please visting http://www.bossgoo.com