Hi sp, yes there is an time limit, new tanks are good for 12 years, then need to be recertified and are good for 8 more years, it is cheaper to have the new OPD valves installed on 30 lb and larger tanks, but problay cheaper to exchange the 20 lbers. You can do the valves yourself if you have the tools to remove the old valve and put the new one in, but you cann't recertify the tanks yourself. Here locally in MN. it cost approx. $20.00 per tanks for new valves & cert. :approve:
PS you can tell the age of the tanks by looking on the steel collar, the date is stamped into it, along with the emtpy wt. of the tanks etc.
Now that the subject has been brought up, I too, have a small question on this subject.
In a class A, there is a large perm tank. It is not suppose to be removed to have it filled outside the MH. If it is a 1989 model tank, what are the rules on code for it? I realize the small tanks or removable ones should be brought up to code, but.... :question:
Hi ARCHER, the tanks mount on MH's are regulated under differnt rules, the 2, 5, 10, 20, 30 & 40 Pound portable tanks are regulated under DOT as in Dept of Transportation regulations & rules. The permermantly mounted MH, truck, Bus tanks fall under ASME (American Society of Mechanical Engineers) rules and regs. and are not subject to the ODP regs for DOT tanks. Having said that most MH tanks installed after about 1990 have what are called stop fill valves incorparated in the filler assy. But they should never be filled with out opening the liquid level valve (somethimes referred to as the split valve), if liquid LP starts coming out then it time to stop filling, if the filler pump stops before liquid starts coming out you most likely have a stop fill valve that has shut off flow of LP, anyway the tank will be at the 80% level.