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The LEGEND VALVE 461-915 is a 1-inch PPSU PEX coupling manufactured to the ASTM F1960 standard. PPSU (polyphenylsulfone) is a high-performance thermoplastic known for its resistance to heat, pressure, and chemical exposure, making it a dependable choice for PEX expansion-style connections. This coupling joins two sections of 1-inch PEX tubing using the cold-expansion method required by the F1960 specification. Licensed plumbers and pipefitters install this fitting in potable water distribution and radiant heating systems where a reliable, tool-driven connection is required.
This coupling is suited for residential and light commercial plumbing applications where 1-inch PEX-A tubing is used. It is commonly installed in water supply lines, manifold distribution systems, and hydronic radiant floor heating layouts. The F1960 cold-expansion method requires an expansion tool and the appropriate size expansion ring or integrated ring fitting. This part is intended for use with PEX-A tubing only, as the cold-expansion process is not compatible with PEX-B or PEX-C tubing types.
Designed as an F1960-compliant cold-expansion PEX coupling for use with 1-inch PEX-A tubing in residential and light commercial plumbing and radiant heating systems.
Installation must be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and relieve system pressure before cutting into any existing line. A calibrated F1960 expansion tool and correctly sized expansion rings are required to make the connection. Do not use this fitting with PEX-B or PEX-C tubing, as the cold-expansion method requires the memory properties of PEX-A.
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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