2-way direct acting and pilot operated high pressure valves are generally installed where high pressure and large flow requirements dictate the use of piston valves and/or valves with more robust seals such as PTFE and ruby discs. Pilot operated valves require the minimum pressure differential specified for proper valve operation.

Skinner™ Solenoid Valve Body, Nominal Size: 1/4 IN, Connection Type: FNPT, Ports/Ways: 2-Way, Actuation: Direct Acting, Configuration: Normally Closed, 1/16 IN Orifice, Brass Body Material, Seal Material: Ruby, Additional Specifications: Flow Co-Efficient (Cv): 0.11

• Pilot operated valves should be mounted with solenoid coils vertical and upright, direct acting valves can be mounted in any position, the preferred orientation is with the coil vertical and upright
• Lubricated air, inert gases, water and light oil (300 SSU), additional fluids compatible with alternate materials of construction
• Use of non-lubricated gaseous media can affect valve life

• Catalog https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Parker_04F20C1106AAF4C05_Catalog.pdf