AR20242 | Gymatic 3/B Unloader Valve 3650 PSI Adjustable Pressure

AR20242 Gymatic 3/B Unloader | 3650 PSI, 3 to 5.5 GPM, Adjustable Knob

The AR20242 is the Annovi Reverberi Gymatic 3/B unloader with an adjustable pressure knob, for RK, RR and XM series pumps. It is rated to 3,650 PSI at 3.0 to 5.5 GPM. It bolts straight onto the pump: when the trigger closes, it sends flow to its built-in bypass so the pump is not dead-headed. No external bypass hose is needed.

The knob lets you dial working pressure down for delicate surfaces and back up for heavy cleaning. This version has no chemical injector, so it suits machines that apply detergent downstream or not at all.

What It Fits

• Pumps: Annovi Reverberi RK, RR and XM series, including the A and V versions.
• Flow: 3.0 to 5.5 GPM.
• Pressure: up to 3,650 PSI.
• Connections: 1/2 in. male inlet, 3/8 in. male outlet.

Not sure it fits? Text a specialist at (505) 226-6061 with your pump model and a photo of the old unloader and we’ll confirm.

Good to Know

• This is a trapped-pressure unloader: when you release the trigger, pump pressure drops to zero but the hose stays pressurized.
• Set the working pressure with a gauge at the pump outlet, and keep a thermal relief valve on the pump to protect it during long bypass periods.
• Need detergent through the machine? The AR20081 and AR20082 are the same Gymatic 3/B with a fixed chemical injector.

AR20242 Specifications

• Model: AR20242 (Gymatic 3/B)
• Max Pressure: 3,650 PSI
• Flow Range: 3.0 to 5.5 GPM
• Inlet: 1/2 in. male
• Outlet: 3/8 in. male
• Pressure Adjustment: Knob
• Injector: None
• Bypass: Built in
• Body: Brass
• Max Water Temperature: 140°F
• Fits: AR RK, RR and XM series pumps
• Brand: Annovi Reverberi

Shipping: Usually ships via UPS in 1 to 3 days.