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The MSI PRODUCTS INC A3040508 is a Class 150 pipe cap machined from 304 stainless steel, designed to seal the threaded end of a pipe system. Female NPT threads provide a secure, leak-resistant closure for capping unused openings or blanking lines staged for future expansion. Cast construction delivers consistent wall thickness and dimensional accuracy. At 0.1 pounds and sized for 1/2 inch pipe, this cap is a straightforward termination fitting suited to plumbing, HVAC, and light industrial piping work performed by licensed plumbers, pipefitters, and mechanical contractors.
This cap is rated for low-pressure service and is well suited to water, compressed air, food processing lines, and light chemical handling applications. Its 304 stainless steel construction resists corrosion, rust, and oxidation in both indoor and outdoor environments, making it appropriate for general industrial, commercial, and residential mechanical systems where a durable threaded closure is required.
Designed as an OEM-style replacement and standard fitting for 1/2 inch female NPT threaded pipe systems rated at Class 150 in residential, commercial, and light industrial applications.
Installation is typically performed by a licensed plumber or pipefitter. Isolate and depressurize the affected line before threading the cap onto the pipe. Apply an appropriate thread sealant or PTFE tape to the male pipe threads before engagement. Follow applicable IPC and local mechanical code requirements for pressure testing after installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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