General Pump ZH2820 Trapped Pressure Unloader, 52.8 GPM, 4500 PSI, 1", 1/2" Bypass

General Pump ZH2820 Trapped Pressure Unloader | Summary

The General Pump ZH2820 is engineered for high-flow industrial applications where maximum pressure control and reliability are essential. Designed to regulate and safely unload pressure in large-volume pressure washing or car wash systems, this unit can handle up to 52.8 GPM and 4500 PSI with ease.

Its brass construction ensures durability even under continuous heavy use, while provisions for panel mounting make it easy to integrate into fixed installations. This valve is ideal for demanding systems that need high-capacity flow regulation and long-term reliability.

4500 PSI General Pump ZH2820 Pressure Unloader Valve | Features

• Handles up to 52.8 GPM — ideal for multi-gun and high-demand setups

• Maximum pressure capacity of 4500 PSI for serious performance

• Brass body construction for superior corrosion resistance

• Single 1" FNPT inlet and outlet connections for easy plumbing

• 1/2" FNPT bypass port provides safe and efficient pressure relief

• Designed for panel mounting — perfect for fixed system integration

• Minimal maintenance required for long-term industrial use

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