Skip Content

Bronze POP Safety Relief Valve, MNPT Inlet Type, FNPT Outlet Type 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.
Megaphone How can we improve our Product Images?

Bronze POP Safety Relief Valve, MNPT Inlet Type, FNPT Outlet Type

Price $756.00 / each

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 1CMZ1
  • Mfr. Model # 511HGBKMAA0075
  • UNSPSC # 40141606
  • Catalog Page # 4050
  • Catalog Group # D4501
  • Shipping Weight 15.98 lbs.
Country of Origin USACountry 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

  • ItemPOP Safety Relief Valve
  • Body MaterialBronze
  • Inlet TypeMNPT
  • Outlet TypeFNPT
  • Inlet Size1-1/2"
  • Outlet Size2-1/2"
  • Factory Set Pressure75 psi
  • Pressure Range15 to 300 psi
  • Disc Material316 Stainless Steel
  • Overall Height15"
  • ApplicationAir and Gas Compressors and Dryers, Pressure Vessels and Pressure Piping System etc
  • Seat MaterialMetal
  • Spring MaterialStainless Steel
  • Temp. Range-320 Degrees to 406 Degrees F
  • Test LeverNo
  • StandardsASME Section VIII UV, NB, CSA CRN
Megaphone How can we improve our Technical Specifications?

Compliance and Restrictions


    Full-nozzle design can be used in closed systems. Metal-to-metal seating. Ideal for pressure vessels and pressure piping systems.
    ASME Section I Steam and Section VIII POP Safety Relief Valves
    Valves are factory preset and sealed to prevent tampering. Not adjustable. MNPT x FNPT connections.
    Note: For ASME Certified valves custom set to other pressure settings, call 1-800-GRAINGER or your local branch.

    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.