Where can I get a gas tank shut-off valve?

Shutting Down and Gas Hot Water Heater
There are four steps to properly shutting down a gas hot water heater:
(1) For working on water pipes or draining the tank, turn the gas valve control to pilot.
(2) For any other work on the hot water heater, turn the gas completely off.
(3) Cool down the water inside of the tank.
(4) Shut off the cold water supply to the hot water tank.
(5) Open a hot water faucet somewhere, (preferably above) in the house.
Step One - Setting a Gas Valve On 'Pilot'

The water heater gas valve is located toward the bottom of your water heater just above the burner chamber. On the top of the gas valve that has various settings on it. The three main settings are 'OFF', 'Pilot' and 'ON'.
Turning the dial to 'Pilot' will shut the gas off to the burner without shutting off the pilot light. This setting can save you the trouble of having to light the pilot again when you are done. This setting should not be used if you are doing any work on the burner assembly or the gas line. It is suitable to use when you are draining the tank or working on the water lines.
Step Two - Turning the Gas OFF

The safest thing to do whenever you work on your gas hot water heater. Leaking gas can explode and is quite dangerous.
First turn the dial on the gas valve to 'OFF'. Turning the gas valve to 'OFF' does not completely shut off the gas. There is a ball valve on the gas piping next to the water heater. This valve should be turned 90 degrees until the handle is perpendicular to the pipe.
With the gas valve shut off, the gas is completely turned off and the water heater is safe to work on.
Step Three - Cool Down the Water
This is an important step. Water that is directly out of the gas hot water tank can be very hot and scald or burn you. Run and considerable amount of hot water through one of the fixtures until the water is just warm. Do not mix it with cold water, run it pure hot. The cold water running into the tank will dilute the hot water and reduce the temperature.
After the water has cooled down, it is safest to work on the water heater.
Step Four - Shut Off the Cold Water Supply
Do not shut the water off if you have not turned the gas going into your gas hot water heater off. If the water continues to heat inside the water heater after the water is shut off the heater will build up too much pressure. If you are sure the water is off, you can turn off the cold water supply.
Step Five - Open a Hot Water Faucet
Opening a faucet will prevent the water heater from developing an air lock. Any attempts to drain the water tank will fail if a faucet is not open to provide air.
It should now be safe to work on your hot water tank.
Step Five - Draining a Hot Water Tank
Most repairs on a gas hot water tank can be made without draining the tank. There are, however a few exceptions that must be noted.
Removing or replacing a gas valve will require the tank to be drained. This part threads directly into the lower portion of the tank. Another activity that requires an empty tank is flushing out the sediment. Clearing out water heater sediment on a annual or semi-annual program is a good maintenance program. Draining the tank is a chore, but the steps required are also required for the sediment flush, so it is really not any extra work.

Blower foil 1pwes 0244 bl-em or connect the gas lines

Google translated fails, mostly. what is FOIL?
is this a LEAF BLOWER?
and you lost the gas tank and lines.
you need the service manual to fix that.
my string trimmer has 4 gas lines, In/out/purge /vent.
only your manual covers this...

we are USA so if you in France you gas lines can be different.
so... get the manual that matches your COUNTRY.

i think you cold have some dirt in tank, caburator or valve which opens the gas to go into tank

Item Part Number Description 1 9B593 Evaporative Emission Valve (Flexible Fuel Only) 2 9002 Fuel Tank 3 9G332 Evaporative Emission Tube Shut Off Valve 4 9B593 Evaporative Emission Valve 5 9C052 Fuel Tank Pressure/Vacuum Transducer 6 9H307 Fuel Pump Module 7 9S278 Rear Fuel Supply Return and Vapor Tube

Turn off propane. Disconnect propane tank from barbecue. Open burner valves for about 20 seconds. Close valves. Reattach propane tank. Slowly open propane tank valve. Turn on burner and ignite

Hi, W/D here.
The answer to your question is yes AND no. You'd think that the valves on the grill would shut off the gas tightly, and usually, they do, but they are really designed to regulate the flow range as opposed to being a tight shut-off valve. The tank valve, on the other hand, is a positive isolation block valve, and that's it's only job. When you have finished grillin' for the day, close the valve at the tank, let the gas in the line burn off at the burners, then close the valves on the grill. This gives you 100% shut-off with no residual gas pressure in the lines.
Best regards, (and when will the ribs be done?), --W/D--

No they don't join together. One goes in and the fuel filter is attached to it. The other is the fuel return line, and that is the one that is attached to that plastic part. It is usually a one way valve and nothing else is attached to other end. To get the line in the tank get a small stiff wire, put it through the fuel line hole and other end through filler neck. Wrap the wire around the end of fuel line about 2 to 4 times and pull it through helping it along by pushing on line. I think you see where I am going with this so use your own judgment also. I hope this helps you out a little bit. Regards and good luck.

The problem that you describe is most likely the in-tank check valve (brass or chrome valve where air enters tank ). Easy to check. Run compressor till you have about 60-80 lbs in tank then shut-off / unplug for safety. Remove the small hose (1/4) at the check valve and verify that air is leaking from valve. If leaking remove cap from checkvalve and look at inner plastic valve for cracks. Replace as needed then re-test for leaks. You can be creative in making the inner plastic valve (teflon or nylon ball 1/2 - 5/8 ) or replace the whole valve. (inner part not sold separately) Good luck with your repair and post again if you have a question.

have your evaporative emission control system check.sound like you have purge valve solenoid not working or vent valve control solenoid.have it scan.to see which component not working..reason your gas tank expanding. your fuel vapor building up pressure.your purge valve and vent valve open allowing gas vapor from charcoil canister. to be burn in the intake manifold to be burn in combustion chamber.