AR21158 unloader kit overview - front
AR21158 unloader kit overview - front AR21158 unloader kit overview - back AR21158 unloader kit overview - exploded AR21158 mounting / banjo bolts AR21158 mounting bolt orings AR21158 pressure adjustment cap AR21158 pressure adjustment top angle view AR21158 pressure adjustment top view AR21158 chemical injector fitting AR21158 inlet adapter oring AR21158 inlet suction fitting

AR21158 Unloader Kit with chemical injector

In stock
Part Number
AR21158
$118.11
Part Number: AR21158
Brand: AR NORTH AMERICA
Shipping Weight: 2 Lbs
AR21158 Unloader Valve is a bolt on Regulating Valve from AR Annovi- Reverberi.

This is the AR Mini-Matic 4/B Series Unloader valve for RC, XT and XM Series AR Annovi-Reverberi high pressure pumps.

The AR21158 Unloader Valve comes with the following standard features:

Fits RC, XT,XTA, XM, XMV,XMA, SXMA, XTV Series Pumps

Max PSI: 2600
Inlet Port: 1/2 G Female
Outlet Port: 3/8 Male
Max GPM: 3gpm
By-Pass: Aluminum Built In By-Pass 91540510
Injector: Adjustable 2.0
Brass Inlet Mounting Bolt AR2260420
Brass High Pressure Outlet Bolt AR1540270

The Mini-Matic 4/B Bolt on unloader was used and various models or pressure washers throughout the industry and can be found on most major brands of pressure washers.
You can also tell if you have a Mini-Matic Unloader valve by looking at the brass by-pass adaptor this brass piece will have MINIMATIC stamped into the brass housing.

The Unloader Valve was used by several manufacture on different pressure washers under the following part numbers:

AR2944, AR-2944
AR2973, AR-2973

AR2924, AR-2924
AR2940, AR-2940
AR2941, AR2941
AR2943, AR-2943
AR2946, AR-2946

V119, V-119


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Related Items

The AR21158 Bolt on Regulating Valve is the Unloader valve for RC, XT and XM Series AR Annovi-Reverberi pressure pumps.

This AR21158 Unloader features a bolt on design with an internal by-pass system.

This series unloader allows the adjustable pressure to release pressure in the pump head when in the by-pass mode protecting the pump over pressurization.

This series unloader eliminates the need for a by-pass hose and fitting having to be installed on the pressure pump.

The Mini-Matic 4/B Unloader can be order with either a fixed chemical injector or a fixed chemical injector.

The molded plastic adjusting knob is designed for user comfort.

The AR Mini-Matic 4/B Series Unloader valve comes with a standard brass body, stainless steel plunger and spring with either a aluminum or brass by-pass fitting depending on the specific unloader.
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The AR21158 Unloader Valve can be used to replace the following older version unloader valves. AR2946 AR2945 AR2944 AR2973 AR2940 AR2941 AR2942 AR2947 AR2968 AR2973