General Pump YU2158 Stainless Steel Unloader Valve 21 GPM 6500 PSI – OEM Replacement Part

Part Number: YU2158
Category: Pressure Washer Components → Unloader Valves → General Pump Parts
Type: General Pump Stainless Steel Trapped Pressure Unloader Valve

The General Pump YU2158 Stainless Steel Unloader Valve is a genuine OEM trapped-pressure unloader designed for high-performance commercial and industrial pressure washer systems. Built for demanding applications, this heavy-duty unloader valve delivers precise pressure regulation, reliable bypass control, and superior durability in high-pressure environments.

Key Features & Benefits

• Genuine General Pump OEM Replacement Part
• Heavy-duty stainless steel construction
• Trapped-pressure unloader valve design
• Corrosion-resistant for demanding environments
• Supports flow rates up to 21 GPM
• Rated pressure of 5800 PSI
• Maximum pressure rating of 6500 PSI
• Provides reliable pressure regulation and bypass control
• Helps protect pumps from excessive pressure buildup
• Ideal for commercial and industrial high-pressure systems

Technical Specifications

Manufacturer: General Pump

Part Number: YU2158

Product Type: Trapped Pressure Unloader Valve

Material: Stainless Steel

Spring Color: Black

Maximum Flow Rate: 21 GPM

Rated Pressure: 5800 PSI

Maximum Pressure: 6500 PSI

Unloader Type: Trapped Pressure

OEM Replacement: Yes

Typical Applications

• Industrial pressure washer systems
• Hydro-excavation equipment
• Surface preparation equipment
• Heavy equipment wash systems
• Fleet washing operations
• Manufacturing facility cleaning
• Industrial wash bays
• High-pressure cleaning and blasting systems

Performance Advantages

• Provides precise pressure regulation under demanding conditions
• Handles high-flow, high-pressure applications with ease
• Stainless steel construction resists corrosion and wear
• Protects pumps and system components from excessive pressure buildup
• Improves system reliability and operational safety
• Designed for continuous-duty commercial and industrial use
• OEM-quality construction ensures dependable long-term performance
• Supports maximum cleaning efficiency and system productivity
• Ideal for severe-duty pressure washing applications

Maintenance Recommendations

• Inspect the unloader valve regularly for leaks, wear, or pressure fluctuations.
• Verify pressure settings during scheduled maintenance intervals.
• Inspect springs, seals, and internal valve components for wear.
• Flush contaminants from the system to minimize internal damage.
• Follow General Pump installation and adjustment procedures.
• Use only genuine General Pump OEM replacement parts when servicing the valve.