Pilot solenoid valves use the differential pressure of the medium over the valve ports to open and close. Also known as servo-assisted solenoids, these valves provide high flow rates and can operate at higher pressure and temperature ranges, with lower power consumption. A servo-assisted, diaphragm solenoid valve with pilot control employs the use of a small chamber directly above the diaphragm to assist in the operation of the valve. Process fluid is allowed to enter the chamber through a small orifice in the inlet port, and in a normally closed valve, compresses against the diaphragm and forces is against the seat to maintain the closing seal.
Once current is applied to the pilot solenoid, the diaphragm is pulled upwards against the spring pressure, and the pilot fluid in the chamber is forced back through the orifice in the inlet port where it re-joins the main flow through the valve body.
The main areas of application for pilot-controlled diaphragm solenoid valves are liquid or gaseous media (such as compressed air, water and hydraulic oils) within closed circuits in which little or no differential pressure is present for opening and closing.
Benefits of Pilot solenoid valves
- Excellent for very large flow.
- Pressure assists valve operation.
- Needs minimum pressure differential.
- More economical for higher flow values
- Lower electrical power level.
FAQs – Airmax RM Series 3/2 Way Single Pilot Valve
1.What is the primary function of the Airmax RM Series 3/2 Way Single Pilot Valve?
The Airmax RM Series 3/2 Way Single Pilot Valve is used to control pneumatic signals efficiently, and the Single Pilot Valve enables accurate air flow direction for smooth operation of actuators in automation systems.
2.How does the pilot operation improve performance of a Single Pilot Valve?
Pilot operation allows low air pressure to control higher flow paths, and the Single Pilot Valve delivers reliable switching, reduced manual effort, and consistent performance in industrial pneumatic circuits.
3.Is the Airmax RM Series Single Pilot Valve suitable for industrial automation applications?
Yes, the Airmax RM Series Single Pilot Valve is designed for industrial automation, and the Single Pilot Valve performs reliably in control panels, machinery, and process automation systems.
4.Can the Airmax RM Series Single Pilot Valve be installed in compact pneumatic setups?
Yes, the compact design of the Single Pilot Valve allows easy installation in space-constrained layouts, and the Single Pilot Valve ensures dependable air control with minimal maintenance.



The pilot control is accurate and the valve operates smoothly every cycle. Great long-term performance.
Very responsive switching and durable construction. Great value for industrial automation users.
Extremely reliable valve. Installation was simple and performance is flawless under high pressure.
Compact design and zero leakage. Works smoothly even in continuous cycles without failure.
Quick response and highly stable performance. Perfect pilot valve for pneumatic control operations.