AR20821 – Mini-Matic 4/B Unloader Valve – 2600 PSI
- Precision-engineered unloader valve for compact pressure washer systems.
- Rated up to 2,600 PSI for safe, stable, and consistent pressure regulation.
- Automatically diverts water into bypass when the trigger is released.
- Protects pumps, hoses, spray guns, and fittings from damaging pressure spikes.
- Lightweight but rugged design suitable for residential and light commercial use.
Functionality & Operation
- Automatic bypass regulation prevents pump overpressure.
- Seamless transition between spray and bypass modes.
- Reduces vibration, water hammer, and operator fatigue.
- Supports efficient cleaning cycles without interruption.
Construction & Durability
- Built with durable, wear-resistant materials.
- Corrosion-resistant housing suited for typical wash environments.
- Precision-machined internals ensure smooth and accurate regulation.
- Factory-tested for quality and reliability out of the box.
Installation & Adjustment
- Compact body fits easily in portable washers and small frames.
- Straightforward connections compatible with standard fittings.
- Adjustable pressure settings for tailored system performance.
- DIY-friendly design; simple for service shops to install or replace.
AR20821 | Mini-Matic Unloader Valve 2600 PSI Compact Standard
Applications
- Residential pressure washers for driveways, patios, decks, and siding.
- Light commercial contractor units and facility maintenance washers.
- Service shops requiring reliable replacement unloaders.
- DIY users needing an easy-to-install pressure regulation solution.
Common Cleaning Uses
- Driveways, decks, patios.
- Residential siding and fencing.
- Vehicle cleaning: cars, ATVs, small trucks, boats.
- Small shop floors and maintenance areas.
Shipping & Availability
- Stocked and distributed by AR North America.
- Typical shipping via UPS Ground within 24 hours.
- Seasonal peak shipments average 2–3 business days.
- Reliable parts availability for fast service turnaround.
Key Benefits
- Pressure Rating: Adjustable up to 2,600 PSI.
- Design: Mini-Matic 4/B for compact systems.
- Function: Automatic bypass with smooth pressure transition.
- Construction: Lightweight, durable, precision-machined components.
- Applications: Residential washers, portable units, light commercial rigs.
- User-Friendly: Easy installation, simple adjustment, low maintenance.
- Distribution: Fast UPS shipping through AR North America.
AR20821 | Mini-Matic Unloader Valve 2600 PSI Compact Standard
- Provides dependable pressure regulation and essential pump protection.
- Automatically redirects water to bypass to eliminate pressure spikes.
- Built for compact systems requiring reliable, long-lasting performance.
- Ideal for homeowners, contractors, and repair shops needing a robust small-system unloader.





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