AR20242-R | Gymatic 3/B Unloader Valve 3650 PSI Valve Kit

Overview

The AR20242-R Gymatic 3/B Unloader Valve (Retail) is the
consumer-packaged version of Annovi Reverberi’s professional Gymatic 3/B
unloader series. Rated for 3,650–3,800 PSI, it maintains
precise pressure control and automatically diverts water into bypass when the
spray trigger is released. This protects the pump, hose, gun, and fittings
from damaging pressure spikes while delivering the durability contractors
expect and the accessibility retail customers need.

Gymatic 3/B Design & Protection

At the heart of the AR20242-R is the proven Gymatic 3/B mechanism, known for
rugged construction and smooth, predictable regulation. When the trigger is
pulled, the valve holds line pressure within its rated range. When the trigger
is released, it instantly routes flow into bypass, allowing the pump to
circulate water safely rather than dead-heading against a closed gun. This
automatic bypass action:

• Extends pump life by preventing overloading and overheating.
• Protects hoses, guns, and fittings from pressure spikes.
• Provides a stable, repeatable working pressure for the operator.

Construction & Materials

The AR20242-R features a reinforced body made from high-strength,
corrosion-resistant materials. Internally, precision-machined brass and
stainless-steel components ensure consistent performance across thousands of
cycles. Seals and o-rings are formulated to handle frequent exposure to
detergents, chemicals, and hot water commonly found in commercial and
industrial cleaning environments.

Every valve is factory-assembled and tested by Annovi Reverberi before
distribution through AR North America, ensuring reliable performance and
compatibility with a wide range of high-pressure washer systems.

Installation & Adjustment

Designed for straightforward installation, the AR20242-R connects easily to
most professional pump configurations that call for a Gymatic 3/B style
unloader. The retail packaging provides clear part identification for repair
shops, resellers, and end users.

Output pressure is adjustable within the 3,650–3,800 PSI
range using standard hand tools. Accessible adjustment screws and lock-nuts
make it simple for technicians or experienced DIY users to fine-tune system
pressure to match nozzle size, pump output, and job requirements.

System Compatibility

The AR20242-R belongs to the Gymatic (C2 / 3/B) family, designed to operate
at higher professional pressures than Minimatic (M2) unloaders, which
typically regulate around 2,600–2,900 PSI. This model is a direct fit on many
AR pumps sold through AR North America and can be cross-referenced against
numerous contractor-grade pressure washer models.

Service centers, rental fleets, and mobile contractors often stock the
AR20242-R as a go-to replacement unloader whenever a Gymatic-spec valve is
required.

Retail-Ready & Service-Friendly

Packaged for retail and e-commerce, the AR20242-R is easy to identify, stock,
and ship. It is well suited for:

• Repair and service shops looking for a standardized replacement valve.
• Retail counters and online resellers needing a clearly labeled,
  consumer-ready part.
• DIY users who want a plug-and-play unloader with professional pedigree.

Key Benefits

• Automatic bypass protection extends pump and system life.
• Factory-rated 3,650–3,800 PSI for demanding workloads.
• Durable, precision-machined internals handle detergents, chemicals,
  and hot water.
• Simple, field-adjustable pressure setting with standard tools.
• Retail-ready packaging ideal for resellers and service centers.
• Cross-compatible with many AR professional pumps and commercial
  cleaning systems.

Applications

• Contractor and facility-maintenance pressure washer fleets.
• Industrial and commercial wash bays where uptime and safety are critical.
• Service and repair shops providing unloader replacements.
• End users and DIY customers upgrading or replacing a failed unloader.

The AR20242-R Gymatic 3/B Unloader Valve combines the trusted
performance of Annovi Reverberi’s professional components with the convenience
of a retail-ready package. With its robust construction, adjustable
3,650–3,800 PSI rating, and automatic bypass safety, it protects pumps from
overpressure while maintaining steady, reliable operation—making it a
versatile solution for contractors, repair centers, and serious DIY users
alike.