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UNLOADER MG4000 4500PSI (BLACK) HANDLE/MICROSWITCH Image 1
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UNLOADER MG4000 4500PSI (BLACK) HANDLE/MICROSWITCH Nav Image 1

UNLOADER MG4000 4500PSI (BLACK) HANDLE/MICROSWITCH

$91.99 $107.99


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microswitch unloader Unloaders and Valves
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  • Description

MTM Hydro's MG4000 unloader series is a trapped pressure unloader that has universal 3/8" ports for mounting, installation, and bypass requirements. The Microswitch feature of this Unloader allows for immediate shutoff of supporting accessories such as a burner. This rapid response system mounted on your unloader allows for shutoff without waiting for another switch further down the line to catch the change in pressure. The MG400 unloader readily competes and regularly replaces competing models such as the VRT3 or Pulsar Unloaders. With its enticing price point, this Italian designed and manufactured unloader can be found across dozens of industries including Mobile Cleaning, Car Wash Installations, Mining, Auto Detailing, and many more.


  • Bypass - Two available 3/8" NPT Female ports
  • Inlet - Two available 3/8" NPT Female on side or bottom
  • Outlet - 3/8" NPT Female
  • Mounting port - 3/8" NPT Female bottom mounting port available
  • Other - 1/4" Side port located near handle for supporting accessory



  • Max - 10.5 GPM
  • Max - 195°F temp rating
  • Rating - 250V - 15A