Asc Engineered Solutions D.NP Square Head Plug 0.5 in Mnpt

Product Description

The ASC Engineered Solutions D.NP is a cored regular square head plug designed for use in threaded pipe systems. It features a male NPT (MNPT) end style at 0.5 inch nominal size and is rated at 125 lb working pressure. Constructed from cast iron with a galvanized finish, this plug is built to resist corrosion in demanding service environments. It is a domestically produced fitting intended for installation by licensed plumbers and pipefitters working on low-pressure piping systems in commercial and industrial applications.

This square head plug is suited for residential and light commercial plumbing, HVAC piping, and general industrial pipe systems where a threaded closure is required. The cored design allows the plug to be driven with a standard wrench during installation. At 0.5 inch nominal with MNPT threads, it fits standard half-inch female NPT fittings and pipe openings. It is commonly used to cap off unused ports, test points, or branch connections in threaded iron piping systems.

Key Features

• 0.5 inch nominal size with male NPT thread for secure threaded engagement
• 125 lb pressure rating suitable for low-pressure plumbing and piping service
• Cast iron construction provides durability in heavy-duty pipe system applications
• Galvanized finish offers corrosion resistance for extended service life
• Square head cored design allows wrench-driven installation without specialized tooling
• Domestically produced to consistent dimensional standards for threaded iron fittings

Compatibility

Designed as an OEM-style replacement or standard service fitting for 0.5 inch female NPT threaded connections in cast iron and threaded steel pipe systems rated at 125 lb class.

Installation Notes

Installation is performed by a licensed plumber or pipefitter. Shut off system pressure and drain the line before removing or installing any threaded fittings. Apply appropriate thread sealant or PTFE tape to the male threads per job specifications and local plumbing code requirements. Do not overtighten cast iron fittings, as the material is brittle and susceptible to cracking under excessive torque.

Technical Specifications

• Nominal Size: 0.5 inches
• End Style: MNPT (Male National Pipe Thread)
• Pressure Rating: 125 lb
• Material: Cast Iron
• Finish: Galvanized
• Head Style: Square Head Cored
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: D.NP