On my kitchen sink I replaced the original old style twist taps with 1/4 turn lever taps, cheap Homebase ones. However now when I open the cold lever tap quickly a plumbing fixture under the sink gives a brief squirt of water, into my under sink cupboard.
This leaking fixture is situated in the pipe just after the cut off tap where mains water enters the house, but before everything else apart from the pipe to the garden hose tap. My guess is that the leaky device is some type of pressure reducing valve and that opening the tap quickly causes some kind of pressure shock. It has Reliance Water Controls written on it.
As knowledgeable members might have guessed I'm starting from a position of considerable ignorance and was wondering if the solution is just to replace the lever tap with a screw tap or if I need to replace the leaky "pressure reducing valve". Even telling me the correct terms to google to understand the problem would be a great help.