The threaded side is for the connection from a flushometer to the urinal fixture or from the tank piping out of the drain of the urinal, depending on how the. Aprilaire 42- Drain Spud for Model 5505- The Aprilaire 42Drain Spud is the plastic fitting that attaches to the base of the housing of your humidifier. Simply drop the tool into the drain and apply a counter-clockwise torque using a in. A video on changing a bathtub spud.
Find great deals on eBay for drain spud. Get it as soon as Tomorrow, Apr 25.
The patented design boasts a unique helical knurl which bites into the drain and will not slip. An internal spud wrench is used to hold the spud in place, while the nut on the outside is tightened to allow the washer to tighten evenly around the inside of the hole in the porcelain. Can be a simple process, but the odd little problem may arise.
It is designed to allow for the connection of the humidifier drain hose in the aforementioned Aprilaire humidifier models.