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Galvanized malleable iron 3/4 inch NPT square head pipe plug

Value Brand

Value Brand 3/4" MNPT Galvanized Square Head Plug

SKU CH-R26X-AFGJW

Galvanized malleable iron square head plug with 3/4 inch NPT threads, rated Class 150

  • 3/4" MNPT thread fits standard piping systems
  • Galvanized malleable iron resists corrosion in plumbing use
  • Class 150 rating suits typical residential pressure needs
  • Square head design allows easy wrench installation
  • California Proposition 65 warning applies to this product

3/4" MNPT Galvanized Square Head Plug

This 3/4 inch male NPT galvanized square head plug is a Class 150 malleable iron fitting designed to seal threaded pipe ends in plumbing systems. It arrives new without pre-applied thread sealant or an included seal, so the installer must supply appropriate sealing material. The galvanized coating provides corrosion resistance for water, air, and oil lines in residential or light commercial installations.

Installers closing 3/4" NPT ports

Suited for plumbers, maintenance technicians, and DIYers terminating 3/4 inch NPT threaded openings on iron or steel pipe networks. Not intended for users needing a plug with integrated sealant, a different thread standard, a higher pressure class, or a hex head drive style. Buyers requiring stainless steel, brass, or plastic material for chemical compatibility should select an alternative fitting.

Verify thread compatibility and pressure rating

Confirm the mating port uses 3/4 inch NPT threads and that the system operating pressure stays within the Class 150 rating for malleable iron. Ensure you have pipe thread sealant or tape compatible with the fluid type and temperature range. Check local codes for any restrictions on galvanized fittings in potable water applications and review the Proposition 65 notice regarding listed chemicals.

Highlights

  • 3/4" MNPT thread fits standard piping systems
  • Galvanized malleable iron resists corrosion in plumbing use
  • Class 150 rating suits typical residential pressure needs
  • Square head design allows easy wrench installation
  • California Proposition 65 warning applies to this product

Specifications

BrandZORO SELECT

Questions about this item

What thread size must the female fitting have to accept this 3/4" MNPT plug?

The female fitting needs a matching 3/4" FNPT thread for a proper seal.

Will the Class 150 rating of this galvanized plug match the pressure rating of my existing Class 150 fittings?

Yes, the Class 150 rating aligns with other Class 150 components in the same piping system.

How can I confirm the plug is seated correctly after installation?

The square head should sit flush against the fitting face with threads fully engaged and no visible gaps.

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