Q. "Will these parts fit all waste and overflow drains?"
A. These fit some of the most common brass drains but they are only made to fit Price Pfister brand bath tub drains and they might not fit your drain.
Q. "Will a Bath Waste & Overflow prevent water from overflowing the tub if the faucet is flowing water half to full force?"
A.The overflow drain on a tub will not prevent an overflow of the tub if the tub or tub/shower valve is flowing water faster than 2 or 3 gallons per minute. The main purpose of the overflow drain on a tub is to have a place for the water to exit as water is displaced when someone enters the tub. Most people fill up a tub and turn off the water before entering the tub. Tub overflows are usually 1 1/2" diameter and are designed to normally handle 2 to 3 gallons of water per minute if the piping is clean and free of any debris or hair. Many tub or tub/shower combination valves in use today were installed before water conservation laws were passed and are capable of allowing water to flow at rates of between 6 and 35 gallons per minute depending on the type of valve installed. As you can see, a normal, gravity fed, tub overflow will not be able to keep up if the faucet is running faster than 2 or 3 gallons per minute. To prevent a tub overflow we suggest you keep watch while your tub is filling with water.
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