Legend Valve 416-398 316 Stainless Steel Reducing Coupling

316 Stainless Reducing Coupling

The Legend Valve 416-398 is a 316 stainless steel reducing coupling designed for industrial plumbing systems. It connects a three-inch female NPT thread to a one-and-a-quarter-inch female NPT thread. The fitting suits installers who need a corrosion-resistant transition between dissimilar pipe sizes in chemical or marine environments.

Sustained corrosion resistance

Grade 316 stainless steel maintains structural integrity during continuous exposure to chlorides, acids and elevated temperatures where lesser alloys would pit or creep. The material resists stress-corrosion cracking under constant pressure cycles without degrading the thread seal. This performance holds across the long duty cycles typical of process piping and saltwater service.

FNPT-to-FNPT thread configuration

Both ends use female National Pipe Taper threads, so the coupling joins two male-threaded pipes or nipples directly without adapters. Systems requiring male-to-male, socket-weld or flanged connections cannot use this fitting. Buyers must verify that their mating components carry matching FNPT threads in the stated sizes.