Ever driven over a speed bump too fast? Your car hates it. Your plumbing feels the same way about fast, rushing water. The restrictor is that safe, gentle speed bump.
It prevents water hammer, that loud banging noise in your pipes. It also stops the drain hose from flying off its standpipe and flooding your floor. Suddenly, a tiny piece of plastic seems like a genius invention, right?
Washing Machine Waste Splitter, 2-Pack Double Drain Hose Connector
Without it, your washing machine would be a lot more like a fire hose—unpredictable and a little dangerous.
But What If You Remove It?
You might be tempted to yank it out thinking, “More flow = faster drain, right?” Wrong. Many people do this by accident when cleaning the drain filter.
Without the restrictor, the machine might drain faster, but it’ll also suck in air and foam. The pump will work harder, overheat sooner, and your machine could start smelling like a swamp. Not exactly the upgrade you were hoping for.
You might also notice that your machine leaves a tiny bit of water stuck in the tub. That’s because the pump lost its mojo. The restrictor is basically the brain behind the drain’s brawn.