Interesting new part in Fluidmaster

[NWTennesseean]

I noticed a new part in a Fluidmaster that I recently purchased. I've verified it was not in earlier versions of the product. I wonder what its purpose is. It appears to force the incoming water to travel thru a circling channel before it reached the point beyond the part. Note, it can be removed easily by pulling it out with some needle-nose pliers; it is held in by friction fit alone. You can see it in the lower tubing of the Fluidmaster. At first I thought it was a manufacturing mistake, but as noted it appears to have some function to enhance the product.

 

[Twowaxhack]

It slows down the fill to make it quieter. It’s a flow restrictor. I remove them.

 

[Twowaxhack]

I believe it is also designed to stop inserting the tubing so far down the tube that you create a "siphon out" affect.

No, that’s the refill clip you’re talking about.

The part pictured is found inside the water inlet.