I. Product Description :
• Made of high-quality brass material, this component boasts excellent pressure resistance, corrosion-resistance & rust prevention. Suitable for various 1HP-3HP air compressors. It 3-port design allow simultaneous connection to the air receiver, compressor pump head & pressure switch relief & pipe, making it an essential component in any air compression system.
• The built-in one-way check structure effectively prevents air backflow protects the compressor pump head, extends machine life & maintains system safety & stability.
II. Product Highlight :
• Non-Return System :
This internal check valve prevents air from flowing back from the receiver tank to the compressor pump head, avoiding damage caused by back pressure.
• 3-Way Structure :
One valve body completes three connections :
① Compressor Outlet
② Tank Inlet
③ Pressure Switch Unloader Port
Significantly reduces installation steps, saves time & makes air compressor assembly easier.
• Automatic Unloader Release :
When the pressure switch is de-energized, the small pipe interface automatically releases the residual pressure in the pump head, making the compressor start up easier (no-load start)





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