Value Brand 2" Black Forged Steel Cap Class 3000 FNPT

2-inch Class 3000 forged steel cap

This 2-inch black forged steel cap provides a threaded closure for piping systems rated to Class 3000. It uses an FNPT connection to seal the end of a pipe run in industrial or commercial installations. The fitting meets ANSI B1.20.1, ASME B16.11 and ASTM A105 specifications for material and dimensions. It is suited for maintenance, repair and new construction where a permanent or removable end stop is required.

FNPT threads and 3000 psi rating

The female national pipe taper threads conform to ANSI B1.20.1 for compatibility with matching male NPT fittings. Pressure integrity is rated at 3000 psi at 72 degrees Fahrenheit per the Class 3000 designation. Thread engagement and seal quality depend on proper assembly technique and the use of appropriate thread sealant. Systems operating above the rated pressure or temperature require a different class of fitting.

Class 3000 pressure boundary

The ASTM A105 forged steel body delivers the wall thickness and material strength required for the 3000 psi rating at the reference temperature. It comfortably handles standard hydraulic, steam and gas services within the Class 3000 envelope. The cap reaches its limit when system pressure or temperature exceeds the class rating or when corrosive media attack unprotected carbon steel. Applications demanding higher pressure classes or alloy construction need alternative fittings.