This 1" brass horizontal check valve is an inline non-return valve designed to allow flow in one direction and prevent backflow in residential and light commercial plumbing systems. Constructed from durable brass (bronze/lead‑reduced options are common across manufacturers), the valve is available as swing or spring‑loaded designs and fits standard 1" threaded (FNPT) connections for straightforward inline installation.

Key features

• Material: Brass body for corrosion resistance and long service life.
• Size: 1" pipe size with 1" FNPT threaded connections (inline mounting).
• Check mechanism: available as swing (disc) or spring/poppet styles depending on model—quiet, anti‑chatter options exist.
• Orientation: optimized for horizontal installation but many models also support vertical mounting.
• Typical pressure ratings: commonly found in the 125–400 psi range depending on model and manufacturer.
• Applications: backflow prevention for water lines, pumps, irrigation, HVAC loops and general plumbing protection.

These performance and construction details align with industry standard threaded check valves and the typical product specs offered by major suppliers. Select models are certified for potable water (lead‑reduced/lead‑free) while others are intended for non‑potable or industrial uses—confirm certification for drinking‑water applications before installation.

Installation & compatibility

Install inline with proper thread sealant or tape on 1" FNPT connections; tighten to manufacturer torque specs. If a push‑to‑connect alternative is preferred for PEX/CPVC/copper systems, push‑fit brass check valves are available for faster tool‑free installs. Always check cracking pressure and media compatibility (water, steam, oil) when specifying a part.