Forum Discussion
Old-Biscuit
Feb 18, 2014Explorer III
It's not air......
When disconnecting hoses from cylinders there is a check valve inside the ACME screw on hose which keeps line pressure in hose/system.
What is needed is a demand on the system for flow.......so regulator will open.
Lighting off the stove top burners creates this demand for flow quicker than the tiny little flame in fridge.
Furnace/water heater will also create this demand for flow except the timing/flame proofing circuit on them shuts down ignition/main flame before sufficient flow can occur.
Air in system would mean propane leaked out and would continue to leak out when cylinders/tanks were valved in.
Its demand for flow.........not purging air.
When disconnecting hoses from cylinders there is a check valve inside the ACME screw on hose which keeps line pressure in hose/system.
What is needed is a demand on the system for flow.......so regulator will open.
Lighting off the stove top burners creates this demand for flow quicker than the tiny little flame in fridge.
Furnace/water heater will also create this demand for flow except the timing/flame proofing circuit on them shuts down ignition/main flame before sufficient flow can occur.
Air in system would mean propane leaked out and would continue to leak out when cylinders/tanks were valved in.
Its demand for flow.........not purging air.
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