LP Cylinders as well as Tanks Within MOTORHOMES As well as Motorhomes

March 10, 2023 by No Comments

I understand! I understand! LP tanks tend to be dull! Nicely… they might be HOWEVER because you will find all of them upon a variety of motorhomes such as engine houses, collapse lower travelers, pickup truck travelers, journey trailers, as well as fifth tires this just appears in order to cause which because we are with them we ought to additionally under- remain all of them. Keep in mind, fluid lp is really a gasoline, it’s saved pressurized, it’s flammable, as well as it may be harmful. You will find not just guidelines, that should be adopted within their make use of, but additionally laws and regulations happen to be passed to assist guarantee the actual secure utilization of fluid lp. All this is particularly relevant with regard to old models and several customers of those models that believed these people “got the steal” upon which aged truck obtain a shock once they discover the actual LP cylinders tend to be “out associated with date” as well as consequently “illegal”. OKAY, let’s evaluation a few fundamentals.

Very first, you will find 2 kinds of tanks or even cylinders.

US DOT (Dept. associated with Transportation)

Dept. associated with Transport pot may be the 1 the majority of us understand. They’re Up and down however you like and therefore are known as US DOT cylinders.

— utilized mainly upon collapse lower travelers, pickup truck travelers, journey trailers, as well as fifth tires.

— could be taken off the actual leisure automobile

— generally utilized in the actual up and down placement, Although not usually. A few can be utilized within the horizontally placement however every canister Can be used in the way that it had been created. (they are often designated for that placement by which they must be used) Pre l998 cylinders without having OPD products might be utilized each methods each this particular doesn’t utilize these days because OPD, products are needed upon JUST ABOUT ALL cylinders. ASME (American Culture associated with Mechanised Engineers)

-manufactured towards the signal from the United states Culture associated with Mechanised Technical engineers

-most generally known as “tanks”

-usually present in engine houses

-are installed completely


-marked “vapor withdrawal”

-used just for watery vapor drawback

(ASME tanks possess a individual fill up control device — 1 using the yellow-colored cap)


3 kinds happen to be readily available for Motorhomes within current background

1) Most typical had been the actual POL CG 510 (Presto Lite)

-identified through it’s 5 or even 6 prong distort manage and it is steel left-handed hose pipe link

2) OPD support control device along with “quick disconnect” that is mainly utilized by the actual BARBECUE business and it is NOT REALLY allowed with regard to make use of upon motorhomes

Fast Detach fixtures may be used down line upon motorhomes upon things like gasoline gas grills however aren’t allowed in the LP canister

3) Kind We OPD support control device that is right now required (May m, 2002) and it has the 1 5/16″ ACME line and it is very easily recognized using its dark or even eco-friendly connection for that high-pressure hose pipe link.

The actual open/closing distort manage will even just possess 3 prongs that differentiates this since the brand new design.


There’s a good exclusion nevertheless. You are able to encounter the actual “POL style” using the remaining passed metal hose pipe fittings along with OPD products. It’s very easily distinguishable since the open/closing distort manage won’t have the actual old-style 5 or even 6 prongs however may have the brand new design 3 prong manage which is obviously tagged OPD. You are able to be assured you aren’t just current but additionally lawful.

OPD GADGET (Overfill avoidance device)

OKAY, what exactly may be the large offer concerning the OPD gadget we’ve been talking about? OPD products are actually needed upon just about all leisure automobiles canister as well as tanks really are a security gadget in order to guarantee which cylinders as well as tanks aren’t stuffed over the actual 80% degree. (OPD products happen to be needed upon ASME tanks because l984 as well as US DOT cylinders because l998)

These devices makes use of an interior drift attached to the actual fill up control device that activates the piston which limits the actual circulation associated with fluid lp to the container as soon as this gets to the actual 80% complete variety.

Whilst they’re not really foolproof, typically these people achieve their own meant objective. Certainly the actual drift products vary between your horizontally as well as up and down storage containers therefore cylinders as well as tanks along with OPD products Can be used within the placement (horizontal or even vertical) that these were created.


The actual set optimum fluid degree evaluate is actually an additional gadget, that just about all rv’ers ought to know about as well as realize it’s objective. The next can help differentiate this through additional products.

-used to look for the 80% degree within the pot

-part from the support control device upon US DOT cylinders

-connected to some drop pipe that adopts canister towards the 80% degree -on ASME tanks it’s actually situated in the 80% complete degree or even this has an interior pipe in the 80% degree.

Exactly how it’s utilized

-should continually be OPEN UP (turned out) whenever pot has been stuffed -during the actual filling up procedure watery vapor is going to be released till fluid gets to the actual 80% degree whenever a “white mist” (liquid propane) is going to be released symbols of the actual pot is actually COMPLETE.

When the pot is actually stuffed previous this particular degree, the surplus lp ought to be “bled off” till just watery vapor is actually released in order to guarantee pot isn’t overfilled additionally, in order to avoid any kind of feasible long term issues with the actual pot.

For example, a good overfilled pot might turn out to be harmful in the event that remaining inside a automobile or even within the sunlight because heat boosts the stress within the container. Right now you’ve got a fundamental knowledge of exactly what you are considering whenever you visit a LP container or even canister and you’ll understand if it’s current. Yet another thing to notice is actually the health of the actual container. Tanks which are possibly rusted or even lacking fresh paint ought to be carefully looked over for just about any additional feasible harm. Should you query something about the container or even canister, contain it looked over with a expert.