IS there a shut off valve you have forgot to open between tank and torch or one you were not aware of????
I double you can get a unregulated line run to house by any gas installer....
Here is what I would do if possible.... Have a
intermediate pressure regulator installed on tank... Say a 5 or 10 psi regulator.... Just before line enters house put a "TEE" in line and stub off the 5 or 10 psi pressure fuel towards torch... Just past "tee" install a standard low pressure regulator (1/4 to 1/3 psi or a7- 10 inches of water) and continue run to house appliances ...
NFPA prohibits bringing propane into house at any level over 20psi .. In some areas local codes are even less....
Be aware that most welding style fuel regulators come with a CGA 510 connector... You can (1) remove CGA connector from welding style regulator and replace connection with a 1/4 inch NPT connector or (2) get a CGA 510 adapter (female) adapter so standard regulator connection can be uses with LPG line.... - IT amounts to your guy that says a way to connect thing together does not exist is just plain wrong... He just does not know how to do it and won't research it or admit it.
Dale
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