Check Valve, 1-1/2" SS FIPT x FIPT

Built for demanding water treatment and plumbing service, this 1-1/2-inch stainless steel check valve from American Granby pairs strong corrosion resistance with full-size flow capacity. Both ports are female iron pipe thread (FIPT x FIPT), so it installs inline on threaded pipe without extra adapters and handles aggressive, chlorinated, or high-purity water that would corrode lesser materials over time. Stainless construction makes it a long-term choice where reliability cannot be compromised.

Where This Valve Fits

A check valve permits flow in a single direction and seats automatically to block reverse flow. At 1-1/2 inches, this valve suits larger residential and light-commercial lines, including pump discharge, well systems, irrigation feeds, and the supply side of larger filtration and softening installations where protecting upstream equipment is critical. Stopping backflow keeps pumps primed, prevents treated water from draining back through media beds, and guards against cross-contamination between sections of a system.

• 1-1/2-inch full-port body for strong flow capacity
• Stainless steel construction resists corrosion and scale
• FIPT x FIPT threaded connections on both ends
• Prevents backflow to protect pumps and treatment media
• Suited to well, booster, and whole-house plumbing
• Threads directly into existing pipe runs without adapters

Stainless steel gives this American Granby check valve a real advantage in environments where brass or plastic would degrade, such as systems treating softened, mineral-heavy, or chemically dosed water. The metal resists pitting and holds its sealing surfaces over years of cycling, which translates to fewer service calls and dependable operation. Installers value the straightforward threaded design, which drops cleanly into existing pipe and keeps future maintenance simple. For larger homes, agricultural setups, or commercial treatment trains that demand a robust, corrosion-proof one-way valve, this 1-1/2-inch American Granby model is a sound, durable specification. Because stainless resists the pitting that eventually claims brass in harsh water, this valve rewards the slightly higher upfront investment with years of maintenance-free, leak-free service that keeps a larger system running smoothly. Sized for the larger lines found in well and whole-house systems, it keeps protection in place without throttling the flow your home or operation needs at peak demand. In short, it is the corrosion-proof, full-flow check valve that larger residential and light-commercial systems can depend on for the long term.