Msi Products Inc A3040548 Pipe Cap 3 Inch Class 150

Product Description

The MSI PRODUCTS INC A3040548 is a Class 150, 3-inch female NPT threaded pipe cap manufactured from 304 stainless steel. It is designed to seal the open end of a threaded pipe system, closing off unused openings or capping lines staged for future expansion. Cast construction provides consistent wall thickness and dimensional accuracy throughout the fitting. Licensed plumbers and pipefitters install this fitting in low-pressure systems across water, air, food processing, light chemical handling, and general industrial applications. At 2.2 pounds, the cap is robust without being unwieldy on the job.

This cap is suited for both residential and commercial piping installations where a secure, corrosion-resistant termination point is needed. The 304 stainless steel alloy resists rust, oxidation, and general corrosion, making it a reliable choice for indoor and outdoor environments alike. Typical install scenarios include capping branch tee outlets on water distribution lines, terminating compressed air headers, and closing off threaded ports in food-grade process piping systems where cleanliness and material compatibility are required.

Key Features

• 304 stainless steel construction resists corrosion, rust, and oxidation in wet and chemically active environments
• Class 150 pressure rating suitable for low-pressure water, air, and light chemical service
• Female NPT threaded connection for secure, leak-resistant engagement with standard threaded pipe
• Cast construction delivers consistent wall thickness and dimensional accuracy
• 3-inch pipe size accommodates larger-diameter branch or main-line terminations
• Sold individually for flexible procurement on single-point or multi-point installations

Compatibility

Designed as an OEM-style replacement or new-installation threaded pipe cap for 3-inch female NPT threaded pipe systems rated at Class 150 service.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter following applicable IPC or local mechanical code requirements. Shut down and depressurize the pipe system completely before threading on the cap. Apply an appropriate thread sealant or PTFE tape to the male pipe threads before engagement to ensure a leak-free seal. Do not overtighten, as excessive torque can damage the threads or crack the casting.