Refrigeration valves install into suction, discharge, and liquid lines to control the flow of refrigerant in air conditioning and refrigeration systems. Refrigeration valves are ideal for slowing or stopping flow when making repairs and evacuating or recharging refrigerant. Access and line piercing valves allow entry to lines. Ball and shutoff valves turn flow on and off. Capillary tubing regulates flow within lines. Check valves prevent backflow. Packed line and transducer valves have a tight seal to prevent fluid leakage. Pressure relief valves protect systems from overpressure. Packless diaphragm valves isolate liquid lines for maintenance or repair.