Propane fill question
OK I am officially confused. I took one of my 40lb. propane cylinders out of my new RV to have it filled. A note on the door of the propane compartment said do not fill over 80%, could cause fire,e...
Forum Discussion
red31 wrote:
An overfilling prevention device must not be the primary means to determine when a cylinder is filled to the
maximum allowable filling limit.
NFPA 58, §7.4.4.1
Overfilling Prevention Device [“OPD,” “stop valve”]. A safety device that is designed to automatically prevent a
container from being filled beyond its maximum permitted filling limit.
NFPA 58, §3.3.49
Fixed Maximum Liquid Level Gauge [“outage gauge,” “spitter valve,” “spew gauge”]. A fixed liquid level gauge that
indicates when the liquid level in a container has reached its maximum permitted filling limit.
NFPA 58, §3.3.29.2
The formula for filling LP-gas containers by weight is as follows:
(1) Determine the propane capacity in pounds by multiplying the total water capacity in pounds by 0.42.
(2) Add the tare weight of the cylinder to the liquid weight of the product plus the weight of the hose and
nozzle. The total weight of these three is the proper scale setting.
LP-Gas Safety Rules, §9.136(a) (TEXAS)
This is correct, but Texas is one of the few states that has a comprehensive system and laws/rules for LP. A LOT of states is fly by the seat of your pants. ANY IDIOT is allowed to fill and service LP systems and containers, which is too bad. Doug
