Dual solenoid HPA system is an advanced type of HPA drive for airsoft guns that uses two separate electromagnetic valves (solenoids) to control the firing cycle. One solenoid controls the air supply, while the other controls the nozzle movement. Thanks to this separation, the system offers significantly higher control, stability, and consistency compared to simpler solutions. A dual solenoid HPA system therefore delivers the highest level of control, stability, and performance consistency in airsoft. Compared to single-solenoid designs, it provides more precise feeding, better air efficiency, and outstanding user comfort. Systems such as Polarstar F2™ and GATE Pulsar D belong to the absolute top tier and represent ideal HPA setups for players who want the very best. The complete range of Polarstar F2™ dual solenoid HPA systems and GATE Pulsar D is available on our e-shop.

How does a dual solenoid HPA system work?

In a dual solenoid system, the individual phases of the firing cycle are separated and controlled independently:

• Nozzle solenoid – ensures precise feeding of BBs from the magazine into the hop-up chamber.
• Air solenoid – controls the amount and duration of airflow that propels the BB.

The control unit allows independent timing adjustment of both solenoids, resulting in perfect synchronization between feeding and firing. The outcome is higher muzzle velocity consistency, smoother operation, and minimal air loss.

Single solenoid vs. Dual solenoid system

Single solenoid HPA systems use one valve that handles both feeding and firing. They are simpler, more affordable, and easier to set up, but they come with limitations.

Dual solenoid systems offer key advantages:

• More precise air metering – better efficiency and more stable performance.
• Perfect BB feeding – minimized double-feeds and misfeeds.
• Higher FPS/J consistency – ideal for regulated games and MilSim.
• Superior performance with heavy BBs.
• Smoother operation – reduced mechanical stress on the hop-up and magazines.

Dual solenoid systems are considered the technological pinnacle of HPA propulsion and are the preferred choice for demanding players.

Polarstar F2™ – the benchmark dual solenoid system

Polarstar F2™ ranks among the best dual solenoid HPA systems on the market. It is designed for maximum shot control and extreme reliability.

• Fully independent control of air and nozzle.
• Exceptional performance consistency even at low pressures.
• Outstanding compatibility with various gearboxes.
• Excellent performance with heavy BBs and long inner barrels.

Polarstar F2™ is popular among MilSim players, competitive shooters, and technically oriented users who demand maximum precision and stability without compromise.

GATE Titan and Pulsar HPA – electronics at the highest level

The brand GATE brings top-tier electronics, control, and user comfort to the HPA world. Their control units and accessories allow:

• detailed adjustment of timing and fire modes,
• real-time system monitoring,
• easy control via an app,
• maximum safety and reliability.

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