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The MUELLER STREAMLINE 117-731PV is a no-lead brass full-port ball valve built for 4-inch press-to-press (PxP) connections in high-flow hydronic and plumbing systems. The full-port bore minimizes flow restriction, maintaining maximum system capacity through large-diameter piping. The press-connect design eliminates open flame during installation, allowing qualified technicians to complete connections faster than traditional solder methods. This valve is built to deliver reliable shutoff in demanding commercial mechanical applications where consistent performance and long service life are required.
This valve is suited for commercial and large residential hydronic systems including boiler plants, central hydronic distribution loops, and mechanical rooms where 4-inch press connections are specified. The flame-free press installation makes it appropriate for occupied buildings or confined spaces where torch work is restricted. The full-port design supports high flow rates typical of primary-secondary loop configurations and large-volume hydronic circuits.
Designed as an OEM-style press-connect ball valve for 4-inch copper press piping systems in commercial hydronic and plumbing installations requiring lead-free brass components.
Installation should be performed by a licensed plumber or mechanical contractor familiar with press-fit connection systems and applicable local plumbing codes. Shut off and depressurize the system completely before installing or servicing this valve. Use only approved press tooling and the correct jaw size for 4-inch press connections as specified by the tool manufacturer. Verify that pipe ends are clean, deburred, and fully inserted to the stop before pressing.
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