AndrewJ
New member
Anyone know anything about a one way valve for a bilge pump or any other ideas. I pump my bilge but what's left in the hose drains back when I shut off the bilge pump. /forums/images/graemlins/confused.gif
one way/non return valve
- Thread starter AndrewJ
- Start date
mainmarine
New member
Whale make an in line non return valve.in 1" and 1.1/2 " to stop this, other makes are available in smaller sizes.
Malc@mainmarine.co.uk
Malc@mainmarine.co.uk
HeadMistress
New member
A non return valve in a bilge pump discharge is not a good idea, Andrew...'cuz if it clogs (and bilges are often full of "glop" than can clog it) or fails, your bilge pump won't be able to pump out any water.
Use a manual "dinghy bailer" and a bucket or wet vac remove the water the bilge pump leaves behind. Yes, it's extra effort, but no one (except the dealer) ever said that maintaining a boat can be effortless. In fact, it's actually a LOT of work! /forums/images/graemlins/tongue.gif
Use a manual "dinghy bailer" and a bucket or wet vac remove the water the bilge pump leaves behind. Yes, it's extra effort, but no one (except the dealer) ever said that maintaining a boat can be effortless. In fact, it's actually a LOT of work! /forums/images/graemlins/tongue.gif
scarlett
New member
I have the Plastimo check valve on the holding tank pump out. It works but the quick release mechanism doesn't give me the confidence of the security under the circumsances so mine is double sealed in bags just in case it leaks!
HeadMistress
New member
Scarlett, why would you need a check valve in the holding tank pumpout? I can't even visualize where it would go or what it would accomplish...which is NOT to imply that it has a use...I learn something new from boat owners every day, some of which is very useful.
macd
Active member
Don't know about Whale, but all the Rule pumps I've come across specifically warn against the fitting of non-return valves.
scarlett
New member
Hi. Being in Greece and the boat being equiped with an RM69 bilge pump as the thing for the pump out job, it was being immobilised with tomato seeds. The RM69 is designed with flap valves which are very susceptable to being kept open by such little things.
Having to overcome this I bought what was available locally, the Plastimo gadget, which is fitted with valves which are like bird beaks. This is fitted just above the tank top level. This worked ok but when the new Plastimo pump arrived I threw the RM69. Now all is well.
The boat has a high lift from the tank to the outlet. The check valve also helps speed the pump out process by preventing any 'drain back'.
Having to overcome this I bought what was available locally, the Plastimo gadget, which is fitted with valves which are like bird beaks. This is fitted just above the tank top level. This worked ok but when the new Plastimo pump arrived I threw the RM69. Now all is well.
The boat has a high lift from the tank to the outlet. The check valve also helps speed the pump out process by preventing any 'drain back'.
squidge
New member
bought one today from TCS chandlery £2.99. Keep them clean and they are OK as nothing will come through the sieve on the pump big enough to cause a blockage. I have one on each bilge pump line to stop one filling the other as they use the same outlet.
HeadMistress
New member
First I've ever heard of tomato seeds causing problems in a holding tank overboard discharge pump...I'd think anything that could cause problems in that pump would cause problems in the toilet pump first. That is, unless your waste tank is also doubling as a gray water tank and they're going down the sink drain into the tank, not through the toilet. If so, that's a major no-no...black and gray water systems should never be combined any way because of the risk of e-coli and other germs and viruses found only in waste migrating into sink drains, contaminating sinks and surrounding areas.
However, you've actually made a better case for rinsing out the tank, pump and lines several times a year than you have for a check-valve in the line. Not only to flush out sludge accumulation in the bottom of the tank, but because waste contains animal fats that build up on gauge senders and inside pumps and hoses....and your check valve, 'cuz I'd think that anything that can cause problems in the overboard discharge pump would also cause the same problems in a check valve.
However, you've actually made a better case for rinsing out the tank, pump and lines several times a year than you have for a check-valve in the line. Not only to flush out sludge accumulation in the bottom of the tank, but because waste contains animal fats that build up on gauge senders and inside pumps and hoses....and your check valve, 'cuz I'd think that anything that can cause problems in the overboard discharge pump would also cause the same problems in a check valve.
scarlett
New member
Hi . There are only solids and sea water from the toilet going into the holding tank. It maybe something that you don't experience but at least one of us is incapable of digesting tomato seeds!
The holding tank was spotless recently when it was removed for system overhaul. I also flush it at the end of season with fresh water. If it works don't mend it, certainly if it is fouled with 'solids'. Sorry.
The holding tank was spotless recently when it was removed for system overhaul. I also flush it at the end of season with fresh water. If it works don't mend it, certainly if it is fouled with 'solids'. Sorry.