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Six inch black square head plug with tapered threads

Legend Valve

Legend Valve 350-412 6 inch Black Square Head Plug

SKU CH-G2KP-3YXWX

A 6-inch black square head plug with MNPT threads for sealing pipe ends

  • 6-inch NPT thread fits standard pipe sizes
  • black square head allows wrench tightening
  • Legend Valve brand ensures reliable quality
  • new condition guarantees unused performance
  • California Prop 65 warning informs safe handling

Product Identity

The Legend Valve 350-412 is a 6-inch black square head plug with male NPT threads. It is intended for plumbers and maintenance technicians who need to seal a large-diameter pipe fitting in industrial or commercial systems.

Proposition 65 Notice

This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. The warning applies to the item as supplied and does not describe a performance limit of the NPT interface itself.

Installation Check

Verify that the mating component has a matching female NPT thread of the same nominal size before ordering. Confirm that the material and pressure rating of the assembly are compatible with the intended service conditions.

How it compares

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

Price $45.99
Pricier than about 80% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Should I choose the 6 inch size for my pipe?

The 6 inch plug matches 6 inch MNPT threads; verify your pipe diameter before ordering.

What does the black square head mean once installed?

The square head provides a solid grip for tightening with a wrench on the 6 inch MNPT fitting.

Does the MNPT thread standard limit pressure or temperature?

MNPT defines the thread form; pressure and temperature limits depend on the piping system design.

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