Parker manufactures medium pressure valves/filters in the following configurations: LPRA Series relief, MPB Series ball, MPBV Series bleed, MPC Series check, MPF Series filter, MPGV Series needle, MPN Series needle, and MPR series relief.

Automated Valve & Equipment Co. offers pressure regulating valves constructed from bronze, cast iron, and ductile iron materials. O, B, 455, and 402/403 Series pressure regulating valves feature flanged/threaded connections, and they can handle inlet pressures up to 450 PSIG. R and 3040 Series relief back pressure valves come in sizes ranging from 1/2" to 3", and they can handle inlet pressure ratings up to 300 PSI. 175 and 153 Series self-operated/temperature regulating valves have heating/cooling applications, a temperature range from 20 to 250°F, and a size range from 1/2" to 4".

Valv-Trol produces low and high pressure valves in a variety of configurations, including 2-way/3-way position, quick acting, reverse acting, 3-way diverter, two-pressure assembly, etc. Low pressure 2-way valves feature a reverse acting design, and they have liquid transfer, water circulation, water cooling, and steam heating applications. High pressure angle check valves come in sizes ranging from 3/4" to 4", and they can handle pressures ranging from 3,500 to 30,000 PSI.

Clippard Minimatic offers pneumatic electronic valves in the following configurations: 2-way, 3-way, 4-way, proportional, latching, compact, 10mm, and 15mm.