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Standard Temperatures [Classic 27 Series] 2/2, 3/2, & 4/2 Functions, 1/4" to 2-1/2" Port Sizes



  • ¼” to 2 ½” Port Sizes
  • Poppet valves
  • Inline mounted
  • High Flow Rate
  • Internal or external; easily field-convertible for use with an external pilot supply
  • Consistent response time over the life of the valve

The function of directional control valves is to control the direction of flow in a pneumatic circuit. These valves can regulate the airflow being capable of stopping, passing, and changing the direction of airflow. These three functions usually operate in combination with each other.


Directional control valves have multiple ports with the number dependent on the valve type. All these valves have an inlet and an outlet port while many also have an exhaust port. The 27 series is offered in 2/2, 3/2, and 4/2 valve functions with a port size range of ¼” to 2-1/2” in both NPT and G threads.


The poppet construction of the 27 Series enables high-flow, positive sealing, self-cleaning, and a strong dirt tolerance that delivers a long-life. This valve series is available in both solenoid and air pilot controlled options. Solenoids are offered in several AC and DC voltages.


Please refer to the link on the left to easily view and download the ROSS Controls 27 Series Inline Poppet Valves product catalog for additional technical data. In addition, you can filter through all available options below to select the ideal valve that meets your requirements.