1" x 1" FxF 18" Flex Connection

Step up to full-flow connections with the RectorSeal 1" x 1" FxF flexible connector in an 18-inch length. The 1-inch bore matches higher-flow water-treatment equipment and trunk supply lines, where keeping flow generous through the connection protects pressure at every downstream fixture. Female threads on both ends let it thread directly onto 1" valves, nipples, and appliance ports, making it an easy drop-in for whole-house softeners and large filters.

Why size up to one inch

Whole-house systems with heavier demand often run 1" plumbing to limit pressure loss across long runs and busy manifolds. Matching that with a 1" flex connector keeps flow strong while still giving you the forgiveness of a flexible joint. Dropping to a smaller connector on a 1-inch line would pinch the bore and create a needless restriction that can show up as weak pressure when several fixtures draw at once, so pairing the connector to the line size is the right call on any high-flow hookup.

• 1" x 1" female-by-female threaded ends
• 18" length for adaptable routing
• Full 1-inch bore for higher-flow applications
• Corrugated body flexes to absorb misalignment
• About 0.58 lbs
• RectorSeal reliability for treatment installations

Like every corrugated flex connector, this model bends to bridge supply lines and equipment ports that rarely line up exactly, sparing you the work of cutting and fitting rigid pipe in cramped mechanical spaces. The flexible body also soaks up the vibration and slight movement that loosen hard joints over time, helping connections stay leak-free across years of service. When installing, apply potable-rated thread sealant, support the fitting so the corrugations are not kinked or twisted, and snug each end without overtightening before running a pressure check. Keep the run in a smooth curve rather than a tight bend to protect flow and longevity. Because both ends are the same 1" size, it also makes a clean direct replacement for a worn flex line on an existing system, letting you renew the connection without disturbing the surrounding plumbing. For larger softeners, filters, and main-line work, this 1" FxF connector is a flow-friendly, reliable choice that takes the difficulty out of otherwise awkward connections.