AR20888 | Mini-Matic Unloader Valve 2600 PSI Standard Replacement

AR20888 | Mini-Matic Unloader Valve 2600 PSI Standard Replacement

AR20888 – Mini-Matic 4/B Unloader Valve – 2600 PSI
The Annovi Reverberi AR20888 Mini-Matic 4/B Unloader Valve is a compact, high-value solution
engineered to provide dependable pressure regulation and pump safety in small to medium-duty
pressure washer systems. Rated up to 2,600 PSI, it is ideal for portable,
residential, and light commercial cleaning equipment where space, reliability, and protection
are critical.

Functionality & Operation

• Automatic bypass protection: When the spray gun trigger is released, the valve
  redirects water flow into bypass, preventing deadheading and dangerous pressure spikes that
  can damage pumps, hoses, and fittings.
• Stable pressure regulation: Mini-Matic design maintains smooth, consistent
  output pressure for uniform spray performance across varying operating conditions.
• Compact footprint: Small form factor makes it a natural fit for portable
  washers, homeowner systems, and compact mobile rigs.

Construction & Durability

• Rugged housing: Lightweight yet durable body resists wear during frequent
  pressure cycles.
• Precision-engineered internals: Reliable seals and moving parts maintain
  consistent bypass performance, even in continuous use.
• Corrosion resistance: Designed to withstand water, detergents, and common
  cleaning chemicals used in residential and light commercial environments.

AR20888 | Mini-Matic Unloader Valve 2600 PSI Standard Replacement

Installation & Adjustment

• Straightforward installation: Compatible with Mini-Matic 4/B plumbing layouts
  and compact system designs.
• Adjustable pressure: Allows operators to fine-tune system pressure within the
  rated 2,600 PSI range for optimal cleaning performance.
• Service-friendly design: Simple construction enables quick maintenance or
  replacement with common tools, minimizing downtime.

Typical Applications

• Residential cleaning: Protects pumps in home pressure washers for driveways, siding, decks, and vehicles.
• Portable pressure washers: Ideal for small contractor rigs that need a compact, reliable unloader.
• Light commercial systems: Suits small business wash setups where industrial-size unloaders are unnecessary.
• Service shops & DIY users: Popular replacement part thanks to its simple, dependable design.

Shipping & Availability

• Stocked and supported by AR North America for quick turnaround.
• Typical orders ship via UPS Ground within 24 hours (2–3 business days during peak season).

Key Features & Benefits

• Pressure rating: Adjustable up to 2,600 PSI.
• Design: Mini-Matic 4/B compact unloader valve.
• Function: Automatic bypass for pump protection and stable pressure regulation.
• Construction: Lightweight, durable housing with reinforced internals.
• Applications: Residential washers, portable cleaning rigs, and light commercial systems.
• Ease of use: Simple installation, straightforward adjustment, and easy servicing.