The 4F210-1/4 is a manual pneumatic directional valve with a two-way operation & five ports (P = Pressure, A = Outlet 1, B = Outlet 2, R/S = Exhaust). Four-way, two-position valves are generally used to fully extend and retract a double acting cylinder, or in applications with similar operation.

4F210-1/4
Operation	4-Way, 5-Port, 2-Position Momentary (Spring-Return) Foot-Operated Pedal
Type	Foot Operated Directional Air Valve
Port Size	1/4″ NPT
Operating Pressure	0 to 116 PSI
Operating Temperature	14 to 140°F (-10 to 60°C)
Action	Direct Acting
Flow Coefficient (Cv)	1.68
Working Medium	40 Micron Filtered Air or Inert Gas
Body Material	Anodized Aluminum
Seal Material	NBR (Buna N)
Lubrication	Not Required