Mikebarone
DIY Senior Member
I am in the process of leak testing a gas line for a double wide modular home. The gas line is black iron pipe, and it only supplies two appliances, (a furnace, and the stove/oven combination). The home uses propane from a 250 gallon tank.
I am using compressed air at 15 psi, with a gas pressure gage to test for leaks. At the 15 psi, I have found so far, a by-passing gas valve and a flex line connection leak. I have also found a leak where the black iron pipe screws into the regulator, (see photos) all at the furnace location. I have replace the valve, the flex line, and sealed up the leak at the pipe / regulator connection for the furnace area, (all tested again with soapy water).
As I am getting closer to having the gas line, “bullet proofâ€, I also noticed that the stove/oven combination was leaking from an orifice on one of the burners. I have shut off the valve to the stove/ over.
I have tested the main and branch lines to both of the shut off valves and they are bullet proof, and I still have a leak somewhere. I suspect that the air pressure is going through the regulator for the furnace. Could this be because the regulator is designed to operate at ½ psi, and I have 15 psi supplied to it for the test? Could I have the same problem at the stove….too much supplied testing pressure? Could I have messed up the regulators for the furnace and the stove because of too high testing pressure?
Thanks for the help on this one!
Mike
I am using compressed air at 15 psi, with a gas pressure gage to test for leaks. At the 15 psi, I have found so far, a by-passing gas valve and a flex line connection leak. I have also found a leak where the black iron pipe screws into the regulator, (see photos) all at the furnace location. I have replace the valve, the flex line, and sealed up the leak at the pipe / regulator connection for the furnace area, (all tested again with soapy water).
As I am getting closer to having the gas line, “bullet proofâ€, I also noticed that the stove/oven combination was leaking from an orifice on one of the burners. I have shut off the valve to the stove/ over.
I have tested the main and branch lines to both of the shut off valves and they are bullet proof, and I still have a leak somewhere. I suspect that the air pressure is going through the regulator for the furnace. Could this be because the regulator is designed to operate at ½ psi, and I have 15 psi supplied to it for the test? Could I have the same problem at the stove….too much supplied testing pressure? Could I have messed up the regulators for the furnace and the stove because of too high testing pressure?
Thanks for the help on this one!
Mike