Abstract: A device for removing foreign particles from a source of fluid under pressure which is adaptable to be connected to a faucet or the like. It comprises one or more screens which are provided to collect the foreign particles which might include small stones, calcium deposits and the like, such that the particles cannot pass through the mesh of the screen. Such screens are mounted on a rotatable member having an exteriorly accessible handle whereby the rotatable member and screens thereon can be rotated at least ninety degrees and preferably one hundred eightly degrees so that the force of the fluid under pressure cleans off the screen and enables it to be used again to collect or intercept other additional foreign particles.