A good buyer’s guide will teach you about the different types of toilet valves. Different fill valves may work for different toilet models.
In order to comply with plumbing standards, there need to be anti-siphon features in the valves as well.
Anti-siphon features keep low water pressure from mixing contaminated water with drinking water.
A plunger valve, otherwise known as a ballcock, is one of the simplest designs. These valves are crafted from brass and work quietly.
The water discharge tube fills from the bottom, while the hinged lever lets the float ball move.
These are silent fill valve options that typically regulate the amount of water allowed through the flush valve.
It should be noted, however, that if you have an older one of these models, it needs replacing. The older models do not have the anti-siphon technology necessary to protect your drinking water.
Diaphragm valves are very similar to plunger valves in that they also have a float ball. However, they tend to be made of plastic instead of brass.
There are a few older designs that use brass instead, but most of these are discontinued. Plastic is considered more desirable.
In addition, all of these diaphragm designs have anti-siphon technology. Rather than being sealed with a plunger and washer, they have a diaphragm that opens the flapper so water flows out of the toilet tank.
Float Cup Valves
Float cup valves have been around since the 1950s, but that’s relatively recent in terms of toilet technology.
These fill valves function without a ball float. Instead, there’s a cup-shaped like an O.
This is attached to the valve shaft. It slides up and down as the running toilet empties and fills.
You can control the water level with the adjustable height of the float cup. You just change where the cup connects to the metal rod.
Most fill valves that are sold today use this style. They’re an extremely popular choice to replace ballcocks in older toilets.
Floatless valves are the newest type of valve on the market. They were created for water-saving low-flow toilets.
These valves are popular because of how inexpensive they are, but they aren’t always reliable.
In fact, there are multiple plumbers who prefer not to use them at all. They tend to prioritize float cup valves instead.
Since floatless valves work underwater, they attach to the bottom of the toilet tank.
Now let’s take a look at the best fill valves on the market.
1. Fluidmaster 400AH PerforMAX Universal Repair Kit (Our Top Pick)
Our top pick overall is the PerforMAX from Fluidmaster. This repair kit has compatibility with any 2-inch flush valve.
Not only will it replace the fill valve, but it also replaces the flush valve, flapper, and toilet handle.
By replacing all of these components, you’ll take care of most of your toilet issues. The universal design can be integrated into high-performance toilets, toilets with standard water usage, one-piece toilets, and two-piece toilets.
You can adjust the valve anywhere from 10 to 15 inches depending on the size of your tank. This makes it compatible with multiple toilet brands.
Thanks to the solid frame, you don’t get any “ghost flushes” or twisting.
The entire kit can be installed in 10 minutes, making it one of the easiest to use on the market. The components all come with a 7-year warranty.
Universal toilet fill valve compatible with all brands
Replaces fill valve, flush valve, flapper, and handle