Your propane cylinders are 'horizontal' ones........designed to be used laying down
'Vertical' cylinders can NOT be used laying down....must be standing up
Has to do with relief valve and vapor draw designs.....neither can be in liquid.
Remove them from camper.
Take them to a Bulk Propane Dealer and have them recertified and purged/refilled
OR buy new 'horizontal cylinders which are expensive
I have a horizontal cylinder on my recreational vehicle. Are OPD's available for that kind of service?
The 2001 edition of NFPA 58 (the LP-Gas Code) recognizes that horizontally oriented cylinders that were manufactured prior to October 1, 1998, are unable to be retrofitted with the OPD's. As a result of this fact, the Code now exempts these cylinders from having to be retrofit with OPD valves. Any such cylinder must have a label affixed to it to inform the user and the refiller that an OPD valve is not installed.