Spool Valves 3PS Series (Three Port Spool Valves, 2-Position Includes 2-Way & 3-Way Spool Functions Air Pilot, 5 GPM, Tamper-Resistant Air Pilot, 5 GPM, Hex Base or Tamper-Resistant Manually-Operated, 5 GPM, Tamper Resistant Air Pilot, 5 GPM, Hex Base, 2 pos 3-way Hydraulic or Gas (high pressure) Pilot, 5 GPM Manually-Operated, 5 GPM, Hex Base Manually-Operated, 5 GPM, Hex Base, Latching Manually-Operated, 5 GPM, Hex Base, Direct Plunger