General Pump YU21405 Unloader Valve TP 1/2" NPT

General Pump YU21405 Unloader Valve TP 1/2" NPT

For optimal system performance, the General Pump YU21405 unloader valve maintains stable operating pressure by diverting excess flow when set pressure is reached—a critical safeguard against pressure spikes that can damage pump seals, hoses, and downstream components. Built from corrosion-resistant brass and stainless steel, this 1/2" NPT valve handles up to 21 GPM at 4,500 PSI, making it suitable for mid-range commercial and industrial pressure washing applications. The dual inlet and bypass ports provide flexible plumbing configurations, while the green spring and 200° temperature rating ensure reliable performance across demanding use cycles.

Specifications:

• 21 GPM max flow rate
• 4,050 PSI rated pressure
• 4,500 PSI maximum pressure
• (2) 1/2" NPT-F inlet port
• 1/2" NPT-F outlet port
• (2) 1/2" NPT-F bypass port
• Brass construction
• Stainless steel components
• Green spring
• 200° maximum temperature