A flush valve is a mechanism used to flush a toilet or urinal. The valve and associated hardware are located within the toilet tank or in the body of the urinal. Most toilets have a lever or push button activator, which is used to operate the flush valve.
Photosensitivity (or sun sensitivity) is inflammation of the skin induced by the combination of sunlight and certain medications or substances.This causes redness (erythema) of the skin and may look similar to sunburn.hotosensitivity (or sun sensitivity) is inflammation of the skin induced by the combination of sunlight and certain medications or substances.
Sun sensitivity with SjoegrenâsjÃ¶gren s is associated with the AUTOANTIBODY/ssa Or. Ro below are a few tips to help protect yourself this summer and-year. 1  Round protect your skin and eyes through use of, SUNSCREEN-uv protective/lenses, sunglasses ultraviolet-light protective, clothing, hats and-non fluorescent.  lighting