YONGHENG 4500Psi/300Bar PCP Air Compressor - Fast Two-Stage Fill

In this review of the YONGHENG 4500Psi/300Bar PCP Air Compressor, the bottom line is simple: it is a purpose-built high-pressure pump for serious PCP shooters, scuba divers, and anyone who needs a fast, repeatable fill to 300BAR. The model stands out because of its two-stage compression, dual water-oil separators, and a cooling system designed around water and fan cooling that together deliver a quick-fill performance that can charge a 6.8L tank in roughly 30 minutes. For workshops or field use where oil-free output and stable pressure matter, this compressor is worth considering.

Key Features

• 300BAR working pressure: Capable of reaching 300BAR (4500PSI), it meets the demand of most PCP airrifle and scuba tank fills.
• Two-stage compression: The two-stage design improves efficiency and stability during long fill cycles, reducing stress on internal components.
• Quick-fill performance: With a flow around 50L/min and 2800 r/min pump speed, it can fill a 6.8L tank to 300BAR in about 30 minutes under ideal conditions.
• Water and fan cooling: The supplied cooling system requires fresh cooling water every 30 minutes to maintain smooth operation and protect the pump.
• Oil-free output and separators: Two water-oil separators and oil-free delivery help keep fills clean for breathing use and sensitive equipment.
• Robust construction: Alloy air cylinders and quality components promise long-term durability for frequent fills.

Who It's For

This compressor is aimed at hobbyists and professionals who regularly fill PCP air rifles, paintball tanks, and smaller scuba cylinders and need reliable, oil-free, high-pressure fills up to 300BAR. Its 1800W motor and 50L/min flow make it suitable for users who plan multiple fills in a session and who can provide the required cooling water and a ventilated workspace.

It is less suitable for occasional users who need a lightweight, portable inflator for tires or small gear, and those who cannot provide the cooling water routine or manage the unit's 19 kg net weight and 80 dB noise level should look at lower-pressure, quieter alternatives.

Pros & Cons

Pros

• High maximum pressure to 300BAR supports PCP rifles and many scuba fills.
• Two-stage compression with dual separators gives stable, clean output for breathing or shooting use.
• Fast filling rate for its class, filling a 6.8L tank in approximately 30 minutes.
• Durable alloy cylinder and sturdy components built for repeated use.

Cons

• Requires a cooling water supply and water changes every 30 minutes, which adds setup and maintenance needs.
• At about 80 dB and 19 kg, it is relatively noisy and not very portable for casual field use.

Specifications

Our Verdict

The YONGHENG 4500Psi/300Bar PCP Air Compressor is a solid choice for serious shooters, dive technicians, and workshops that need oil-free, high-pressure fills reliably. Its two-stage design, dual separators, and respectable flow rate deliver good value for anyone who can accommodate the cooling routine and manage its size and noise. For regular fills to 300BAR it is a practical, durable option.

Frequently Asked Questions

Do I need to use water with this compressor?
Yes, the unit uses water and fan cooling; you must prepare cooling water and replace it about every 30 minutes for safe operation.

How long to fill a 6.8L tank to 300BAR?
Under the specified conditions the pump's quick-fill performance takes about 30 minutes to fill a 6.8L tank to 300BAR.

Is the output oil-free for breathing fills?
The compressor is oil-free and includes two water-oil separators to keep delivered air clean for sensitive applications.