manually operated metal valves and piping accessories for use in line with metal piping; namely, sight glasses with and without moisture indicators and check valves

regulating valves for refrigeration and other machinery; namely, evaporator pressure and suction pressure regulating valves, water regulating valves and filters, dryers and strainers for use therewith

thermostatic and automatic expansion valves, thermostats, temperature controls, dial thermometers, pressure switches, solenoid valves