Valve taps often occur as a result of a misalignment in the fitting they are in, or a worn out valve seat. In many cases, a new valve spring and cam adjustment will fix the problem, but if it the result of a worn out valve seat, it will have to be machined.
Stop Valve Key
An engine "knock" will become more pronounced when engine is labored (climbing a hill) Valve noise will remain the same under stress
An "engine knock" will be more noticable when engine is labored (climbing a hill etc.) Valve noise will remain constant
you probably have a sticking valve lifter.
Spray wd40 or equal and tap valve "gently" with a hammer while "gently" appling turn pressure on valve.
Reseal or replace the valve.
Sure, an engine is not a motor but its a common term for engine. That diagnosis is correct! I've found... The Mega Power Valve Treatment is a different way to end that dreadful tap tap tapping. Different because you get a free engine motor tune up with it! Online about it.
There is a shutoff valve on the cold pipe going into the H/W tank, if you close it no water will come out of the tank. There should also be a shutoff valve on the wall below each faucet/tap.
The lever in a tap is the handle that is used to control the flow of water. When the lever is moved, it either opens or closes the internal valve mechanism to allow water to flow or stop.
When you turn off a water tap, the force of gravity acting on the remaining water in the pipes creates a pressure that helps stop the flow of water. Additionally, the closing mechanism of the tap, such as a valve or handle, is responsible for physically blocking the water flow to completely stop it.
The "curb stop" is the valve that is on the service from the main into your house. i.e. The 8" main in the street has a saddle tap with your 3/4" service line on it. Within 8 ft of the connection between your service and the main is your curb stop. The curb stop is a valve buried underground. In order to open/close the valve a curb box is placed over the valve. It is essentially a metal tube that lets you open and close the curb stop.
tap valve