The 3R210-1/4 is a manual pneumatic directional valve with a three-way operation & three ports (P = Pressure, A = Outlet, EA = Exhaust for port A). Three-way, two-position valves are generally used to fully extend a single acting (spring return) cylinder, or in applications with similar operation.

3R210-1/4M/S
Operation	3-Way, 3-Port, 2-Position Push / Pull Handle / Plunger M = Detented S = Non-Detented (Spring Return)	M =
Type	Hand Operated Directional Air Valve	S =
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)	0.89
Working Medium	40 Micron Filtered Air or Inert Gas
Body Material	Anodized Aluminum
Seal Material	NBR (Buna N)
Lubrication	Not Required