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.
An insufficient flow of water is usually the result of a blockage, and to remove it, you first have to locate it. A common cause of blockages in kitchen faucets is a build-up of mineral deposits, which can collect in the supply hose, the shutoff valve under the sink or the faucet valve. Single-handle faucets can have either a cartridge or ball valve, and both types of valves have ports that can get blocked. A good strategy for diagnosing low hot water flow is to begin looking for problems at the water heater and work toward the faucet valve. 1 Make sure that the hot water outlet valve on the water heater is open all the way by turning it counterclockwise as far as it will go. Check the hot water flow in other faucets in the house. If they also have low flow, and the water heater valve is open, there may be a restriction in the pipes near the water heater. This is more likely if the pipes are galvanized steel and old. The solution is to replace the pipes.