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#1
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Need special check valve or water pump
Hello,
I am trying to finish my electric bilge pump for my kayak. At first, I was thinking electronic valves, but I found that they will not do the job for me. They are too big and expensive, among other things. So, I am asking for your help - I need one of these two things (either, not both): 1.) Either 3/4 inch, 1 inch, 1 1/8 inch (ideal) check valve. The check valve must be small, semi cheap, seal perfectly when closed (not ONE drip), and be able to open with the slightest pressure (just a dribble of water pushing up from the pump) [or] 2.) A 3/4 inch or 1 1/8 inch 12 volt electric water pump (about 800-1000 gallons per hour) that needs to be pretty light. The pump MUST not let ONE drip of water back through it when off. This means it will act as a check valve. I had bought one at West Marine, where they told me it didn't let any water back, but it does. :-( Thanks for your help! Karl |
#2
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Need special check valve or water pump
Karl Timmermann wrote:
I am trying to finish my electric bilge pump for my kayak. A Google search will turn up a herd of manufacturers of plastic check valves and nearly all of them have a simple little diaphragm check valve that will suit your needs. If you want to prevent the water between the pump and the thru-hull from draining back into the bilge you will need to mount the check valve directly on the pump discharge fitting. This isn't an electronics problem, it is a simple application of an easily obtained mechanical component installed in the correct place. Rick |
#3
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Need special check valve or water pump
"Karl Timmermann" wrote in message
... 2.) A 3/4 inch or 1 1/8 inch 12 volt electric water pump (about 800-1000 gallons per hour) that needs to be pretty light. The pump MUST not let ONE drip of water back through it when off. This means it will act as a check valve. I had bought one at West Marine, where they told me it didn't let any water back, but it does. :-( If the thing doesn't operate the way they said it's supposed to, then it's a defective unit and needs to be replaced by the store. It's called implied merchantability. Good Luck! Rich |
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