Gas line questions

[Cars&Classic]

Have a few questions about gas line
just had a new home built and I need to add a few gas items like the furnace in the garage.
I am old school and like good old black pipe, and I know how to do it nicely and correctly.
the new house was done in the new yellow flex stuff. there is a black pipe manifold with room for expansion and an extra valve.

my question is can I run the line to the garage out of black pipe> or does it need to be the same flex pipe? one person tried to tell me the 2 run at different pressures so I would have to add an additional regulator for the black pipe.
I am good at cutting thereading and sealing the pipe but dont know too much about pressure or design.

adding a furnace in the garage
adding a Gas stove instead of electric
adding a line to the pattio for a gas grill
adding a line to a fire pit in the pattio as well

would I need a larger suply line if I am adding the last 2?
Thanks for any help Ray

 

[ForceFed70]

You can run the black pipe to your garage. Flex, etc shouldn't be needed. You're not planning to bury it are you?

Newer homes often use a 2lb gas system. Black pipe works fine for 2lb, but your appliances will likely only accept 1/2lb. You will likely need to install regulator(s).

You'd have to tell us the supply line size, pressure used, and total BTU consumption before we can tell you if you'll need a larger line. Also, make sure that the meter is rated for the flow as well.

 

[Cars&Classic]

here are pics if this helps