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- Duckbill check valves allow flow in only one direction through a pipe or tube while preventing any backflow in the opposite direction. When fluid pressure is applied from the upstream side, the duckbill flexes open to allow flow. But if pressure comes from the downstream side, the duckbill flaps seal shut to block reverse flow.
blog.process-tech.com/2024/03/duckbill-check-valves.html
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If your boat VacuFlush head pump keeps running (and there's still water in the bowl) then you probably need to replace the duckbill valves by the pump.
- 15 min
- 36.1K
- My Boat Life
Sep 21, 2023 · A bad duckbill valve is one of the most common problems you may be having with your boat's Vacuflush toilet not holding pressure and having the pump run constantly. Watch the full video...
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- My Boat Life
- Troubleshooting A Joker Valve
- Disassembly
- Common Manuals
- Inspect The Joker Valve
- Where Does The Waste Go
- Life of A Joker Valve
- Assembly
- Summary
- Our Sailing Lifestyle
It starts with determining what the problem is. If you have a manual flushing head like or one of the electric flushing types, you have a joker valve. Familiar brands are Raritan and Jabsco. The joker valve is a small one-way valve that lets water and (other stuff) pass through it. The unique shape keeps any of that material from coming back the op...
Taking this apart is not hard, and I typically have to get psyched up for having to do this work. The reality is you are going to get a little bit of toilet water on you. The first thing you want to do is look at the manual for your head and see where the joker valves are located. Below are a few links to manuals of the popular models as well as a ...
Raritan Marine Elegance (Electric Flushing Head) – Buy HereRaritan PH Superflush (Manual Flushing Head) – Buy HereRaritan Crown Standard (Manual Flush) – Buy HereJabsco Lite (Electric Flushing Head) – Buy HereOnce you have the unit disassembled, it is time to remove the old joker valve. In most cases, you can just pull them with your hands and remove them. In the photo above you can see that our model has a small plastic fitting inside of it that keeps it from collapsing under the pressure of the flush. You can also see in the photo above that one of th...
Depending on your boat, this discharge line may go straight overboard. It may go to a holding tank or like in our case, go to a waste treatment unit (ElectroScan). The Electrocscanis a Marine Sanitation Device (MSD) model that treats waste for proper discharge. It is as good if not better than most municipalities in the United States. Once processe...
When you remove the joker valve, inspect it to see if it is worn and not sealing back up. In the photo, you can see a new joker valve next to an old worn out joker valve. This valve was in use for 3 years with 2 adults and 2 children living on the boat. It has seen a pretty high volume of flushes. For what it is worth, we rarely flush paper down th...
The assembly is actually the easiest part. Ensure you correctly install the valves. A good reminder is that the thin side should face the direction of the flow. That is about it. In our case, we have one joker valve in the black hose (pictured). The first one is on the input side of this hose where it connects to the macerator pump. The other is ri...
In the end, this is not a difficult job, and you can almost always do it yourself to save money. Joker valves are available on Amazon but, I prefer to order these from the manufacturer. We keep a few extra on board because in more than one occasion Raritan has had them on back order, so we keep a few spares. They run about $30 or so. One last remin...
See how we go about living aboard and sailing with kids (Grandkids 4 and 12 years of age). We are in the middle of a huge sailboat refit. Our Boat is designed by Bill Garden and built in Taiwan. See how to become a liveaboard whether you stay in a marina or are a cruiser. #boatlife #saillife #SVDreamchaser Subscribe !!Click this link IF you are not...
Mar 7, 2024 · The primary purpose of a duckbill check valve is to maintain the integrity of fluid systems by preventing the reversal of flow. Backflow can lead to contamination, system damage, or operational inefficiencies in various industries, such as wastewater management, sewage systems, and hydraulic applications.
Jun 4, 2023 · A boat scupper drain is designed to allow water to flow out from the boat while blocking water from entering back. The drain uses gravity to evacuate water overboard, while the internal check valve or flap prevents water ingress when submerged, ensuring that only outflow occurs.
Duckbill Valves are unique, one-piece, elastomeric components that act as backflow prevention devices. Also known as one-way valves or check valves. They have elastomeric edges, or lips, shaped in a way that resembles a duck’s bill (hence their name).
Jun 10, 2013 · The Raritan and Groco valves are straight duckbill valves, while the Jabsco is a tricuspid valve that opens slightly wider. The construction materials also vary in hardness: The Groco and Raritan valves are nitrile, while the Jabsco valve is neoprene.
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