The pressure in your tank should be checked with water drained from the tank, with the water drained the air pressure in the tank should be set 2psi lower than your kick in pressure. So for a kick in pressure of 25psi the tank air pressure should be set at 23psi.
Ans 2 - Water should NOT be totally drained from the tank or you may get a false reading ! - Leave 2-3 gallons in the tank. Most systems have the pressure switch set at 30 Psi, so tank residual pressure should be 28psi. - Lower than this gives really dismal pressure in the shower, especially if it's on second floor.
If you are talking about residential water supply it is usually around 50psi (This is the pump kick-out point for my system. The pump kicks in at 25psi. My appologies for any confusion.) 21lb
The water pressure depends on the residual air pressure in the tank. Normally it should be between 30 -50-psi. Tank air pressure is important, it should be about 27-29 when water is nearly empty.
No the fuel tank should not be under pressure. The fuel line should be under pressure. When you open the gas cap, there really should not be any pressure, if you do have, then something is not working right.
If it's a bladder tank, use two pounds less than the cut in pressure.
up on the top of the tank there should be a air valve stem and most pressure tanks should have 30 to 40 psi bladder pressure but it all depends on your water pressure settings.
The water pressure depends on the residual air pressure in the tank. Normally it should be between 30 -50-psi.
If this is referring to a well pressure tank, the air pressure should be at least 25 and also 2 psi below pump cut on pressure. Please give more information next time.
A hot water heating systems water pressure should be 12-25 psi , the air in the expansion tank should be set around 10 psi but can only be accurately tested with no water pressure against it. Usually u can tell if the tank is bad when the relief valve on the boiler starts releasing water
House pressure, 75 PSI maximum.
bad check valve or a leak.
The air charge in a bladder tank should be 2 PSI below the pressure switch ON setting. In other words if the pressure switch is a 30-50, then the tank air should be 28. -If the pressure switch is the higher 40-60, then the tank air is 38. These tanks are all charged at the top and you can check air pressure there also.
If tank has rusted through, tank will leak. If bladder goes bad, tank should not leak.