Install in gas line to shut off gas to building after gas meter, or to isolate an appliance off a gas line.
Means you can shut it off from a distance. Useful either in an automatic system or if you don't want to have someone being around the valve when it's time to shut it off.
Only if it has a WOG rating that is with in the design of the system
Yes, an oil well can be "shut off" by the use of a device that has a hydraulic ram that can crush and seal a pipe (or simply shut a valve) to secure a wellhead. The so-called "blowout preventer" is such a device, but in the case of the current disaster in the Gulf of Mexico, the device failed (owing to a failure to replace a battery, as one report had it).
If you are referring to the stem packing, you should be able to do it with no problem under pressure. Shut the valve off, take off the handle, then the nut with the packing in it, remove the old packing, replace it and reinstall the nut and handle. Open the faucet completely and that should be it.. Some valves use a rubber formed packing instead of the graphite or Teflon rope packing. Generally you can use either in place of the rubber or use a small amount around the stem with the old rubber.
advantages of a globe valve * you get instant access to the supply: only a 90 degree turn to open fully * less maintenance is required to the valve as you won't have to re-seat it disadvantage of a globe valve * it is harder to finely adjust the flow of your substance compared to a gate valve: a gate valve requires many more turns to fully open and close than the single 90o "part-turn" required on a globe valve
What to use to solder a shut off valve
Means you can shut it off from a distance. Useful either in an automatic system or if you don't want to have someone being around the valve when it's time to shut it off.
you need to clean ur carb use fresh gas and clean ur tank and shut off valve
One reason would be that the float valve may be sticking in the carburetor and letting gas flow by and into the engine when the mower is not running. The other thing I have seen cause this is one cylinder is not firing and that cylinder lets the gas by the rings and into the crankcase. Most of the time it is the first thing I listed. You can change the oil and install a shut off valve in the gas line. After you mow just shut off the gas valve. That will let you know if that is the problem. If it takes care of it you can either have it fixed or just use it with the shut off.
Chrysler does not use shut-off switches.
I assume there is not a shut off on the supply side of the line. If you are used to working with gas, you can do it with the line charged, but it is probably best to shut the gas off at the main. If there is not a shut off valve where the flex line connects, I would put one there now. Then it is just a matter of changing the line. Do not use any pipe dope or tape on a gas connection, at least on the flex line. This is a flare fitting and does not require it. The valve to pipe connection is a plumbing connection and should have dope or tape on the threads.
Only if it has a WOG rating that is with in the design of the system
The easiest way is to remove the fuel line from the fuel shut off valve and then use another piece of fuel line to route it into a gas can. Turn the valve to the reserve position and drain the tank.
Chrysler does not use reset switches.
We would need to know the vehicle to answer this. To my knowledge primarily Ford used roll-over switches to shut off the fuel pump, other manufacturers use different methods, not a shut-off valve.
Either shut the gas off at the meter or install a valve on the pipe. As long as you don't have an open flame somewhere close to the gas line and have everything ready, you can take the current flex line off and install the valve with little gas excaping. Use pipe dope on the threads of the pipe instead of Teflon tape. This lets you cap the pipe with your thumb while you apply the pipe dope. Then just install the valve and tighten, making sure to hold the pipe so that you don't disturb the next joint further down the line.
12 volts to hold open the shut-down solenoid