AR20759 | XW XWA Unloader Valve with Injector 3650 PSI System

AR20759 | XW XWA Unloader Valve with Injector 3650 PSI System

The Annovi Reverberi AR20759 XW/XWA Unloader Valve with Injector
is a precision-engineered, dual-function valve built exclusively for AR
XW and XWA series pumps. It combines both
pressure regulation and chemical injection into a single compact assembly,
giving contractors and industrial users a reliable, space-saving solution for
demanding cleaning applications. Rated for
3,650–3,800 PSI, the AR20759 is designed to deliver stable
system performance, extended pump life, and seamless detergent delivery during
heavy-duty cleaning cycles.

By integrating two critical functions into one body, the AR20759 simplifies
installation, reduces plumbing complexity, and minimizes leak points—making it
a preferred choice for OEMs, service shops, and contractors who want both
dependability and efficiency in their pressure washer setups.

Functionality & Operation

The AR20759 functions as an automatic unloader valve, regulating pressure and
providing bypass protection:

• When the spray trigger is pulled, the valve directs water
  to the spray gun for full working pressure.
• When the trigger is released, flow is instantly diverted
  into bypass, relieving pressure and preventing damaging spikes.

This automatic bypass action protects the pump, hose, gun, and seals from
unnecessary strain, helping reduce repair costs and extend overall system
life.

Integrated Chemical Injection

The AR20759 also incorporates a built-in detergent injector that activates
under low-pressure conditions. When set to chemical mode, the injector:

• Draws detergent or cleaning chemicals into the water stream.
• Allows quick switching between high-pressure rinse and soap application.
• Eliminates the need for separate downstream injectors or extra plumbing.

For professionals handling diverse jobs—such as degreasing machinery, fleet
washing, or building maintenance—the integrated injector delivers
convenience and consistent chemical application.

Compatibility

The AR20759 is purpose-built for AR North America’s
XW and XWA pump platforms, which are widely
used in commercial and contractor-grade pressure washers. Using a valve
engineered to factory specifications ensures:

• Perfect mechanical fit and alignment.
• Consistent performance at rated pressures.
• Manufacturer-backed reliability and support.

Construction & Durability

Designed for continuous, contractor-level use, the AR20759 features:

• Rugged, corrosion-resistant valve body.
• Precision-machined internal components for smooth regulation.
• Robust injector assembly designed to maintain consistent draw rates without
  clogging.

Every AR20759 unloader is factory-tested for accuracy and reliability before
shipment, ensuring dependable performance straight out of the box.

Installation & Adjustment

The AR20759’s compact, integrated design reduces the number of components
required in a typical installation, simplifying plumbing and lowering the risk
of leaks. It mounts directly to XW and XWA pumps with standard fittings.

Pressure and injector performance can be adjusted using standard tools, making
setup and fine-tuning straightforward for technicians, service centers, and
experienced DIY users.

Applications

• Contractor cleaning rigs: mobile and trailer-mounted
  systems requiring dependable pressure regulation and detergent injection.
• Industrial cleaning: factories, warehouses, and heavy
  equipment that need both chemical application and high-pressure rinsing.
• Commercial pressure washers: durable systems where
  downtime must be minimized.
• Facility maintenance: large properties, parking structures,
  and municipal or institutional cleaning.
• Service shops & DIY users: easy to install, adjust, and
  maintain replacement unloader/injector assembly.

Shipping & Availability

Stocked and supported by AR North America, the AR20759 is
typically available for fast shipment. Most orders ship via UPS Ground within
24 hours, with seasonal peak demand averaging 2–3 business days. Each valve
arrives fully factory-tested and ready for immediate installation.

AR20759 | XW XWA Unloader Valve with Injector 3650 PSI System

Key Benefits

• Adjustable working range of 3,650–3,800 PSI.
• Engineered specifically for AR XW and XWA pumps.
• Dual functionality: integrated unloader and detergent injector.
• Rugged housing with precision-machined internal components.
• Simplified installation and fewer leak points compared to separate
  components.
• Ideal for contractor rigs, industrial systems, and detergent-assisted
  cleaning.
• Supported and distributed by AR North America.

AR20759 | XW XWA Unloader Valve with Injector 3650 PSI System

The Annovi Reverberi AR20759 Unloader Valve with Integrated
Injector is a versatile, high-strength component that combines
automatic bypass regulation and detergent injection in one compact unit.
Purpose-built for XW and XWA series pumps and rated for 3,650–3,800 PSI, it
delivers reliable pressure control, safe pump protection, and efficient
chemical application. By simplifying installations, reducing system
complexity, and providing consistent performance under demanding conditions,
the AR20759 is trusted by contractors, service shops, and industrial operators
who require both durability and efficiency from their pressure washing
equipment.