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.
Look for other sources of low water pressure. If you can't pinpoint the cause of your low water pressure to just one or two faucets in the house, its probably an overall problem. Check the PRV and water shut off valves in your home. This is often the cause of low water pressure.