ZH288 Blue Spring Unloader 1/2" NPT – Replacement Pressure Washer Unloader Valve Listing Description The ZH288 Blue Spring Unloader is a high-quality replacement unloader valve designed for professional pressure washing systems. Built for reliability and smooth system regulation, this unloader maintains consistent operating pressure and protects your pump from over-pressurization. Ideal for contractors and service technicians needing a dependable 1/2" NPT unloader compatible with a wide range of commercial pressure washer pumps. Product Features & Details Model: ZH288 Blue Spring Unloader Inlet/Outlet Size: 1/2" NPT Application: Professional pressure washer systems Function: Regulates system pressure, prevents pump damage, and ensures smooth bypass operation Construction: Durable metal body with corrosion-resistant components Spring Type: Blue spring for stable pressure control Compatibility: Commonly used on gas-powered and electric commercial pressure washers Use Case: Ideal for replacement, repair, and system optimization Benefits Maintains consistent PSI during operation Protects pump from dangerous pressure spikes Improves system longevity and performance Easy to install and service Specifications PRODUCT YUB21405 INLET Dual 1/2" FPT MAX GPM 21 MAX PSI 4050 MFG PA BYPASS 1/2" FPT SPARING Blue Outlet Dual 1/2" FPT MAX TEMPERATURE 200°F
