General Pump ZH168 Trapped Pressure Unloader, 21.1 GPM, 2320 PSI, 1/2"

General Pump ZH168 Trapped Pressure Unloader | Summary

The General Pump ZH168 is a robust trapped pressure unloader designed to perform reliably in demanding industrial wash environments. With a high flow rate of 21.1 GPM and a maximum pressure rating of 2,320 PSI, this unloader ensures consistent pressure control, especially in systems running multiple spray guns or requiring consistent bypass performance.

Built for long-term use, the ZH168 is ideal for high-volume pressure washing applications. Its dual 1/2" NPT-F bypass ports, durable internal components, and yellow spring for quick identification make it easy to install, maintain, and rely on—day in and day out.

ZH168 Trapped Pressure Unloader, 21.1 GPM 2320 PSI | Features

• High Flow Performance – Handles up to 21.1 GPM for powerful system output

• Durable Construction – Engineered with longevity in mind for industrial use

• Dual Bypass Ports – Two 1/2" NPT-F bypass ports simplify integration and flow routing

• Yellow Spring Designation – Easily identify pressure rating based on spring color

• Compact Footprint – Slim design at 9.15” x 3.69” x 1.81” for space-sensitive installs

• Reliable and Easy Maintenance – Built to reduce downtime and increase serviceability

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