Trap-primer system for floor drains

A trap-priming system utilizing water from a sink water faucet to automatically prime a floor drain p-trap when the water faucet is turned on, the system comprising:

• a floor drain p-trap under the floor drain hole in a floor;
• a sink above the floor;
• and
• a water faucet comprising a water-spout adapted to deliver hot water and cold water into the sink, a faucet valve, and a priming-water conduit;
• wherein the priming-water conduit extends from a portion of the water faucet to said floor drain p-trap, said portion of the water faucet is located between said faucet valve and the water-spout, and said faucet valve controls water flow to said water-spout and into said priming-water conduit, so that, when said faucet valve is turned on, a first portion of the water flowing through said faucet valve flows to the water spout and into the sink and a second portion of the water flows into said priming-water conduit and to the p-trap so that said second portion primes the p-trap;
• and
• wherein the priming-water conduit extends from the faucet, underneath a countertop, through an adjacent wall, and underneath the floor to said p-trap, and wherein there is no valve in the priming-water conduit between said faucet and said p-trap.