Why do Parker pressure regulating valves offer a choice of port size for each connection size?
It is important that valves are selected correctly, the connection to match the pipe size, and the port (valve seat) size to match the refrigerant duty and required pressure drop. The refrigerant pipe size is dependent on the duty, length of the line and pressure drop required. Port size is calculated on duty and pressure drop through valve, therefore it is possible to have a liquid control valve with 5/8″ port and 1.1/8″ connections. Should you require valve selections, please contact our Engineering Dept.
