As I mentioned in the Friday thread, the propane guy came while I was out of town, set the tank, and ran new lines to both houses.
I came back to find that he didn’t run the line under the electrical feed (which I trenched under) to the guest cabin, leaving it only a few inches under the grass. He also left about 5’ to 6’ extra in length that wasn’t going to fit in the trench.
So I shut off the tank, disconnected the regulator at the house, pulled the regulator and line out of the trench up past the electrical feed, fished it under the electrical, relaid the line in the trench, and reconnected the regulator. I also connected up the regulator at the guest cabin which had been capped as he didn’t have the fittings with him to attach it.
I got everything tested for leaks, pilot lit on our gas heating stove again, and the trench backfilled before the rain started.
So for those not familiar with propane systems, the pressure at the tank is anywhere from 0 to 150 psi. Depending on the run to your house and number of appliances the regulator setup will vary
On our old tank, the gas heating stove was the only appliance. They fitted that with a dual stage regulator that dropped the pressure down to 11 WC (Water Column), which what the stove needed.
On the new setup, I plan to add a tankless water heater at the house and eventually a forced air furnace. So at the tank there is a first stage regulator that drops the tank pressure to 10psi, the lines running to both houses is about 3/4” @ 10psi, then each house has a regulator that drops that to 11 WC for the appliances inside
There are configurations that have an outdoor regulator that drops the pressure to 2psi, and each appliance has its own regulator to drop to the needed pressure for that appliance. This type is sometimes used when there are multiple large appliances, or to reduce the size of line needed to run throughout the house. Copper is a standard type of line used in this application, so smaller line = lower cost.