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The FLUIDMASTER pro1t12cs is a 12-inch braided stainless steel toilet supply connector designed for residential and light commercial plumbing installations. It features a 3/8-inch compression inlet and a 7/8-inch ballcock outlet. The connector is built around a polymer core wrapped in braided stainless steel wire, meeting and exceeding code requirements for flexible water supply lines. Fluidmaster's Click Seal technology is built into both ends, giving the installer an audible click to confirm a proper, leak-free seal without cross-threading or over-tightening. Licensed plumbers and skilled trades professionals install this part during toilet rough-ins, replacements, and service calls.
This connector is suited for toilet supply line applications where a 3/8-inch compression shutoff valve connects to a 7/8-inch ballcock or fill valve on the toilet. It fits standard residential tank toilet installations and is appropriate wherever a flexible braided stainless steel connector is specified. The Click Seal fittings reduce the risk of installation errors, making it a reliable choice for high-volume service work where callbacks from failed connections are not acceptable.
Designed as a direct-fit replacement or new-installation supply line for standard residential tank toilets using a 3/8-inch compression shutoff valve and a 7/8-inch ballcock or fill valve inlet.
Installation is performed by a licensed plumber or qualified trades professional. Shut off the water supply at the angle stop valve and flush the toilet to relieve pressure before disconnecting the existing supply line. Hand-tighten the Click Seal fittings until the audible click is heard, then apply no more than a quarter turn with pliers — do not over-torque braided connectors. Verify no leaks are present at both fittings after restoring water supply.
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