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Square head malleable iron pipe plug with male NPT threads

Value Brand

Value Brand Square Head Plug 2" MNPT Malleable 5P548

SKU CH-YP47-XXB4T

A 2-inch male NPT malleable iron pipe plug rated for Class 150 service from -20 to 366 degrees F

  • 2 in NPT male thread fits standard piping
  • Malleable iron construction rated to Class 150
  • Operates from -20 °F to 366 °F
  • Cored plug design reduces weight
  • Prop 65 listed for cancer and reproductive risk

2-inch Malleable Iron Square Head Plug

This malleable iron fitting provides a 2-inch male NPT connection rated to Class 150. It suits plumbers and maintenance crews closing off threaded pipe ends in water, oil, or gas lines where a square drive allows high-torque installation.

Cored Construction with No Pre-Applied Sealant

The cored plug body reduces weight while retaining structural strength for the rated pressure class. Because no thread sealant or seal is included, the installer must supply compatible pipe dope or tape to match the specific fluid and temperature requirements.

Temperature Range from -20 to 366 Degrees F

The material handles continuous service across a broad thermal span, making it viable for chilled-water returns and low-pressure steam headers alike. It is not intended for pressures above the Class 150 rating or for systems requiring an integrated sealing washer.

Highlights

  • 2 in NPT male thread fits standard piping
  • Malleable iron construction rated to Class 150
  • Operates from -20 °F to 366 °F
  • Cored plug design reduces weight
  • Prop 65 listed for cancer and reproductive risk

Specifications

BrandZORO SELECT

Questions about this item

Does the malleable iron plug need replacement after repeated thermal cycles between -20 and 366 degrees F?

Malleable iron at Class 150 is rated for continuous service from -20 to 366 degrees F, so normal thermal cycling within that range does not require scheduled replacement.

What pressure limit is reached first during sustained operation of this 2 inch NPT plug?

The Class 150 rating sets the maximum working pressure, and that limit will be reached before the material temperature ceiling of 366 degrees F under steady use.

How much heat does the plug radiate when the system runs at 366 degrees F all day?

At the top rated temperature of 366 degrees F the plug surface will be very hot to the touch, so insulation or guarding is recommended for personnel safety.

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