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Hexagonal brass pipe plug with tapered threads

Value Brand

Value Brand Red Brass Cored Plug MNPT 1-1/4" Pipe Size

SKU CH-QNDK-MC5T1

Red brass cored plug with MNPT threads for 1-1/4" pipe, rated 200 psi and -20 to 400 degrees F

  • Red brass resists corrosion in water systems
  • MNPT threads seal without extra sealant
  • Class 125 rating handles 200 psi pressure
  • Operates from -20 to 400 degrees Fahrenheit
  • Meets Proposition 65 chemical disclosure requirements

Brass Cored Plug 1-1/4 Inch

This red brass cored plug is designed for threaded pipe connections in plumbing and industrial systems. It suits installers who need a Class 125 fitting with a 1-1/4 inch nominal pipe size for water, oil or gas lines. The male NPT threads allow direct engagement without a separate coupling.

Rated Pressure And Temperature Range

The fitting carries a maximum operating pressure of 200 psi and functions from -20 degrees to 400 degrees Fahrenheit. Brass construction resists corrosion in typical fluid service and the material meets Class 125 specifications. No pre-applied thread sealant is included so the installer chooses the appropriate compound.

Sustained Service Conditions

Under continuous pressure and thermal cycling the brass body maintains its seal within the rated pressure and temperature limits. The cored design reduces weight while preserving thread integrity for repeated assembly and disassembly. California Proposition 65 warnings apply because the alloy contains listed chemicals.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 63% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

How do I install the 1-1/4" MNPT brass plug and what step is often missed?

Thread the plug into the female NPT fitting by hand, then tighten with a wrench; the step often missed is applying fresh thread sealant because none is pre-applied.

What maintenance or replacement will this Class 125 brass plug need over time?

Inspect threads and sealing surfaces periodically for corrosion or mineral buildup; replace the plug if threads are damaged or if leakage appears at the joint.

What is the first limit reached under sustained use at high temperature?

The 400 degrees F maximum operating temperature is the first limit; exceeding it can degrade the brass and compromise the 200 psi pressure rating.

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