Propane lesson learned the hard way.
This may be long, but might help someone else. Woke up to a cold trailer one morning. We use a little electric heater and run it on low for safety reasons, it will generally keep us warm overnight. T...
Forum Discussion
dougrainer wrote:2oldman wrote:Dr Quick wrote:I think that device is in the tank valve, not a pigtail.
pigtails have a safety valve in them, that if you turn the gas on too quickly the system detects a major leak and a special valve restricts gas flow to a minimal amount.
In the Pigtail also. Doug
Propane cylinder OPD service valve has a 'spring loaded shut off valve' that will not allow flow out of propane cylinder unless a pigtail hose is properly attached (stub inside ACME Nut opens the shut off valve in OPD valve)
Excess flow device is a spring loaded ball bearing check valve inside ACME Nut.
It moves to closed position when you first open OPD Service Valve and then spring moves it back to center position when downstream pressure equalizes.
Thermal Bushing in ACME Nut melts above 240*F and then OPD Spring loaded valve pushes it inward shutting off flow from cylinder
READ ALL About the SAFETY Devices with PICTURES
