Generally, they can occur from one of the following causes: 1  Infection. 2  Environmental exposure. 3  Malignancy. 4  Occupational exposure. 5  Collagen vascular disease (an inflammatory condition of the body including the lung) 6  Drugs. 7  Idiopathic (unknown causes)
01-08-2006, 09:34 AM. Check to see if you have the tap marker (handle) turned down to far. The jam nut (lever collar) for holding the marker straight should not be touching the lever bonnet. The bonnet is the nut that holds everything to the faucet. If it is touching, this will cause your sticking Faucet.
You can fix most slow faucet leaks with simple tools. A slow drip from a faucet can waste more water than you might expect. A single faucet shedding 10 drips per minute wastes 3 quarts of water every day, or 350 gallons a year. The cause is almost always a worn rubber part inside the faucet. The original two-handled compression faucet with screwable valve stems has washers at the base of each stem that seal out water.