UNLOADER 60.0300.05 VB UNLOADER VALVE

Description:

The UNLOADER 60.0300.05 VB Unloader Valve is used in high-pressure water and fluid systems to regulate maximum system pressure and divert flow to bypass when the discharge line is closed. Commonly installed in pressure washers, industrial cleaning equipment, and high-pressure pumping systems. Maintenance teams and system integrators use this valve for repair, retrofit, or replacement to protect pumps, maintain stable operating pressure, and extend equipment life.

Applications:

The UNLOADER 60.0300.05 VB Unloader Valve is used in high-pressure cleaning and fluid handling systems requiring automatic pressure regulation and bypass control. It is commonly found in commercial pressure washers, industrial cleaning equipment, car wash systems, and pumping skids where the valve unloads flow when the spray gun or downstream valve is closed. The valve is designed for clean water applications and features a trapped-pressure design with 3/8-inch NPT inlet and outlet connections for integration into compact high-pressure systems.

Technical Specifications:

• Manufacturer: UNLOADER
• Part Number: 60.0300.05
• Product Type: 4-Way VB Unloader Valve
• Function: Regulates maximum pressure and diverts flow to bypass
• Valve Series: VB130
• Pressure Rating: 18 MPa (180 bar / 2600 PSI max)
• Rated Pressure: 16 MPa (160 bar / 2300 PSI)
• Maximum Flow Rate: 25 L/min
• Maximum Fluid Temperature: 90°C (194°F)
• Connection Type: 3/8 in NPT Male Inlet
• Outlet Connection: 3/8 in NPT Male
• Bypass Connection: 3/8 in Female
• Construction: Brass and steel body
• Internal Components: Stainless steel plunger and valve seat
• Pressure Adjustment: Locknut adjustment
• Media Compatibility: Clean fresh water and mild detergent solutions
• Application: Pressure washers, industrial cleaning systems, and high-pressure pumps
• Features: Trapped pressure design, bypass regulation, compact construction, continuous-duty operation
• Suitable for repair, retrofit, and OEM replacement applications

Common Replacements:

• PA VB130 60.0300.00 Unloader Valve
• PA VB135 Unloader Valve
• General Pump VB130 Pressure Washer Unloader Valve 3/8" NPT