Most RVers know to protect their electrical system.
A lot of campers use a surge protector or EMS before plugging into campground power. Many also use a water pressure regulator before hooking up to a campground spigot.
But propane is different.
Many RVers turn on the tank, fire up the furnace, stove, fridge, or water heater, and assume the system is already protected if something goes wrong.
That assumption may be worth a closer look.
GasStop is an aftermarket propane safety device that installs between the propane cylinder and the RV’s propane connection. The company describes it as an emergency shutoff device for propane gas systems. In the event of a sudden and catastrophic propane leak, GasStop says the device is designed to automatically shut off 100% of propane flow.
In plain English, it is meant for a major failure, not every small leak.
How GasStop Works
GasStop is an excess-flow valve.
That means it reacts to a sudden, major increase in propane flow. GasStop defines that as a sudden and dramatic change equal to 78 standard cubic feet per hour or more. The company gives the example of a complete and immediate propane hose rupture.
That kind of failure could happen several ways.
A tire blowout can send debris into the underside of an RV. Road debris can damage exposed hoses or lines. A propane hose can age, crack, or be damaged while the RV is parked. Rodents can also chew through parts of a system.
If a sudden major line failure happens while the cylinder valve is open, propane may continue flowing from the tank.
That is the situation GasStop is designed for.
The device is installed at the propane cylinder. Once installed, it has to be primed when the propane cylinder is opened. On many RV setups, owners press the top of the device several times to charge the system before propane will flow normally.
Here’s a short video of RV Tips & Travels installing and using the Gasstop device, which, according to them, is an upgrade that “many RVers feel should be OEM”.
GasStop also includes a pressure gauge. That gauge gives the owner a visual indication of propane pressure. GasStop says the gauge can show when propane is running low, but its FAQ also says the gauge does not read the exact level of propane in the cylinder. It reads pressure under load or use.
That matters because propane pressure is not the same thing as a true tank-level reading.
A propane cylinder can still show pressure without telling you exactly how much liquid propane is left inside.
What It Does Not Do
This is where RVers need to be careful.
GasStop does not automatically shut off propane for every leak.
The company says the device will not shut off in the event of a minor, slow, or progressive leak. It is calibrated for sudden and catastrophic leaks only. GasStop says making it sensitive enough to trip for every small leak would interfere with normal propane appliance use.
That means a loose fitting, cracked hose, aging connection, or small leak may not trigger the automatic shutoff.
You still need working propane detectors. You still need normal inspections. You still need to check fittings after changes. And if something smells wrong, the answer is not to assume any gadget has handled it.
Shut the propane off and find the problem.
The Gauge Can Help With a Basic Leak Check
The shutoff feature gets most of the attention, but the gauge may be useful in another way.
Some RVers smell propane after changing cylinders, refilling a tank, or reconnecting a hose. Sometimes that smell is brief. Sometimes it may come from the normal process of opening or reconnecting the system. Other times, it may be a real leak.
GasStop says the device can be used to test for leaks before using the propane system.
The basic idea is simple.
Turn off every propane appliance. Open the cylinder valve to pressurize the system. Close the cylinder valve. Note where the gauge needle sits, then check it again several minutes later.
If the needle drops, the system may not be holding pressure.
That does not tell you where the leak is. It also does not replace a professional pressure test. But it can give an RV owner a reason to stop and investigate before using propane appliances.
Any fitting that was touched should still be checked with a proper leak-detection solution. Some RVers use soapy water, but a non-corrosive propane leak detector is the better option around fittings.
Doesn’t the RV Propane System Already Have Flow Protection?
Many RVers will point out that propane cylinders, pigtails, or connectors may already have built-in excess-flow protection.
That is true.
But built-in excess-flow protection is not always the same as a full emergency shutoff.
Todd Henson with the National RV Training Academy explains this distinction well in a propane safety video.
He says the service valve on a DOT cylinder or ASME tank has an excess-flow feature that can slow propane flow if there is a major line break. But according to Henson, that built-in feature does not fully stop the flow of propane.
That is where GasStop argues its device is different.
GasStop says its product is designed to shut off 100% of propane flow during a sudden and catastrophic leak, such as an immediate hose rupture.
So, the question is not whether your RV has any flow protection. Many systems do.
The better question is what that protection actually does during a major line failure. Does it fully stop propane flow, or does it only reduce it?
That is why some RVers add an aftermarket device like GasStop, while others feel the factory system is already adequate.
Why Some RVers Think It Should Come Standard
The argument for factory-installed propane shutoff protection is pretty easy to understand.
RVers already add protection to other systems.
A surge protector or EMS protects the electrical system. A water pressure regulator protects the plumbing system. A TPMS can warn drivers about tire trouble before a failure gets worse.
Propane is also one of the major RV systems.
It can run the furnace, water heater, refrigerator, cooktop, oven, and sometimes a generator. For campers who use propane often, an automatic shutoff device for a sudden major leak can feel like the missing piece.
Some owners see it as a simple safety upgrade.
Others think manufacturers should include something like it from the factory.
The Pushback Is Fair
This is not one of those RV products everyone agrees on.
Some RVers love the extra layer of protection. Others say there are trade-offs.
One common complaint is propane flow.
GasStop’s own FAQ says unexpected shutoffs may happen if a high-demand appliance or regulator is drawing too much propane through the device. The company also says very low temperatures can be a factor.
That lines up with some real-world owner complaints.
In comments under an RV Tips & Travels video about GasStop, one RV tech said he would not recommend this type of add-on because he believes it can restrict propane flow when multiple appliances are running. Another owner said his on-demand water heater caused the device to shut off. A different owner said starting a propane generator became harder because he had to repeatedly prime the device at the tank.
That does not mean every RV will have those issues, but it does mean your setup matters.
An RV with a standard propane furnace and stove may behave differently from an RV with a tankless water heater, propane generator, or several propane appliances running at the same time.
Another complaint is that GasStop adds one more fitting.
That is a fair point. Any added connection in a propane system should be installed correctly and checked for leaks. A hand-installed cylinder accessory may be simple, but propane is still not something to treat casually.
Cost is another factor.
Many travel trailers and fifth wheels have two propane cylinders. Owners who want both tanks protected would generally need one device per tank. That makes the upgrade more expensive than it first appears.
There is also the bigger RV owner complaint: camping already has too many things to worry about.
That frustration is real. RVers are constantly told to buy one more gadget, check one more system, carry one more tool, or add one more safety device.
For some campers, this will feel like peace of mind.
For others, it will feel like another RV accessory solving a problem they are not worried about.
Driving With Propane On Is Still a Separate Debate
This topic often turns into a fight over driving with propane on.
That debate is not going away.
Some RVers shut propane off before every travel day. Others travel with propane on for the refrigerator, furnace, or cold-weather protection. Some do it only in certain situations.
A device like GasStop does not settle that debate.
If a camper travels with the propane valve open and a line is damaged by road debris or a tire failure, an automatic shutoff device could add protection that the built-in system may not provide.
But that does not make it a free pass.
Propane should be turned off anywhere it is required. That can include some tunnels, ferries, bridges, fuel stations, and other posted areas.
A propane shutoff device should never be used as an excuse to ignore propane rules or basic safety habits.
Should RV Manufacturers Include Something Like This?
That is the real question.
Some RVers will say yes. If RVs already come with basic electrical, plumbing, and propane safety features, they believe stronger propane protection should be part of the factory setup.
Others will say no. They will argue that RV propane systems already meet required standards, and adding more parts can create new failure points or nuisance shutoffs.
Both sides have a point.
Factory RV systems are built to meet required standards. But many RVers still add protection beyond factory equipment. That is why surge protectors, EMS units, TPMS systems, water regulators, and other monitoring devices are so common.
GasStop falls into that same category.
It is not required equipment for most RVers. It is not a magic fix. It is not a replacement for detectors, inspections, or shutting propane off when required.
But it does address a real point of confusion.
Many campers assume their propane tank will automatically shut itself off during a major failure. In many setups, built-in protection may only slow the flow.
For some RVers, that difference may be enough to consider an aftermarket shutoff device.
For others, the cost, the priming step, the added fitting, or possible appliance issues may not be worth it.
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