Skip Content

Unloader Valve,Flow Range .25-7.8 GPM close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
How can we improve our Product Images?

Unloader Valve, Flow Range .25-7.8 GPM

Price $519.00 / each

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 1MPP2
  • Mfr. Model # 1MPP2
  • UNSPSC # 40141609
  • Catalog Page # 3782
  • Shipping Weight 1.9 lbs.
Country of Origin ItalyCountry of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • ItemUnloader Valve
  • TypeRegulating
  • Flow Range (GPM)0 to 7.8
  • Max. Fluid Temp. (F)190
  • Body Material303 Stainless Steel
  • Inlet Port (In.)3/8 F
  • Outlet Port (In.)3/8 F
  • Max. Pressure (PSI)3650
  • Height (In.)6-3/4
  • FunctionWhen Discharge Pressure Exceeds the Valve Pressure Setting, the Unloader Valve Permits a Low Pressure Bypass to Tank or Pump Inlet, Reduces Horsepower While Permitting a Wide Range of Flows
  • CharacteristicsProtects Pump and System Components from Surge Shock Damage that Can Often Occur When Spray Guns are Shut Off at High Pressure
How can we improve our Technical Specifications?

Compliance and Restrictions


Alternate Search Terms

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.