Asc Engineered Solutions 1.NP Square Head Plug 1 in Mnpt Cast Iron

Product Description

The ASC Engineered Solutions 1.NP is a cored regular square head plug rated for 125 lb service in cast iron with a galvanized finish. It features a male NPT (MNPT) end style and a 1-inch nominal pipe size. The cored design reduces material weight while maintaining full pressure rating. This fitting is used to seal open pipe ends in low-pressure piping systems. Licensed plumbers and pipefitters install it during rough-in, system testing, and maintenance work on gas, water, and steam distribution lines.

This square head plug is suited for residential and light commercial piping applications where a 1-inch MNPT termination point needs to be capped or blanked off. The galvanized cast iron construction makes it appropriate for indoor plumbing and gas piping systems that require corrosion resistance on ferrous pipe assemblies. It is domestically manufactured and conforms to standard 125 lb cast iron fitting dimensions.

Key Features

• 1-inch nominal pipe size with male NPT thread end style for standard pipe connections
• 125 lb pressure class cast iron construction for reliable service in low-pressure systems
• Galvanized finish provides corrosion resistance on ferrous piping assemblies
• Cored regular square head design reduces weight while maintaining rated capacity
• Domestically manufactured to standard cast iron fitting dimensions

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1-inch nominal MNPT cast iron pipe systems rated at 125 lb service class.

Installation Notes

Installation is performed by licensed plumbers or pipefitters in accordance with IPC and IFGC guidelines as applicable to the system type. Shut off system pressure and drain the line before threading in the plug. Apply pipe thread sealant or PTFE tape to the male threads per local code requirements. Do not over-torque cast iron fittings, as the material is brittle and susceptible to cracking under excess stress.

Technical Specifications

• Nominal Pipe Size: 1 inch
• End Style: Male NPT (MNPT)
• Pressure Rating: 125 lb
• Material: Cast Iron
• Finish: Galvanized
• Head Style: Cored Regular Square Head
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 1.NP