Cat Pumps 7590 Regulating Unloader – 1″ Inlet, 10–52 GPM, 800–2300 PSI

Model: 7590
Category: Pressure Washer → Pump Accessories → Unloaders / Regulators
Type: Regulating Unloader – Pressure Sensitive, Genuine OEM Replacement

The CAT Pumps 7590 Regulating Unloader is a pressure-sensitive unloader engineered for single or multiple pump systems, including weep and multi-nozzle applications. Designed to maintain a set system pressure, the 7590 smoothly transitions into bypass when the spray trigger is released or when a downstream obstruction occurs.

⚠️ Operating Note: For optimal performance, 5–10% bypass flow is required, with a minimum of 10 GPM per gun.

Applications

• Single or multiple pump systems

• Weep and multi-nozzle pressure washer systems

• High-flow commercial and industrial operations

• Systems requiring stable pressure with multiple guns

Specifications

• Maximum Flow: 52 GPM

• Pressure Range: 800–2300 PSI

• Minimum Pressure: 400 PSI

• Inlet Port Size: 1″

• Discharge Port Size: 1″

• Accessory Type: Regulating Unloader

• Material: Brass (BB)

Product Details

Brand: CAT Pumps
OEM: Yes – Genuine CAT Pumps Part
Application: Pressure Regulation / Pump Protection
Unloader Type: Pressure-Sensitive Regulating Unloader

Key Features

• Genuine OEM CAT Pumps 7590 regulating unloader

• Designed for single or multi-pump systems

• Maintains consistent set pressure

• Smooth transition to bypass on trigger release or obstruction

• Holds line pressure during bypass for instant recovery

• Minimal pressure fluctuation with multiple guns

• Heavy-duty brass construction for durability

• Ideal for high-flow (up to 52 GPM) applications