The Fishing Website : Discussion Forums : Which size bilge pump

The Fishing Website : Discussion Forums : Which size bilge pump https://www.fishing.net.nz/forum/ Sun, 31 May 2026 05:51:53 +0000 Wed, 26 Oct 2016 19:40:49 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=121776 <![CDATA[The Fishing Website : Discussion Forums]]> https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ <![CDATA[Which size bilge pump : Thats defnitly one of those...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663239&title=which-size-bilge-pump#1663239 Author: Steps
Subject: 121776
Posted: 26 Oct 2016 at 7:40pm

Thats defnitly one of those comments you read, that sees your head turning rapidly from side to side, finished with a hand palm to the forehead.

Well a few yrs back was messing/ using using a high volume bulge pump to establish required flow rate for a fish pond....
It was placed in an artificial stream....re circulating .. not too different to sitting in a bilge.....because it was sucking so much the water level dropped down to the point where it could not flow to the water holding area where the pump was fat enough. Was pumping a mixture air and water.

Very often there are drain holes and beams that restrict water flow to the pump in many bilges.. not to dissimilar to the artificial stream... and the bilge in our boat

]]> Wed, 26 Oct 2016 19:40:49 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663239&title=which-size-bilge-pump#1663239 <![CDATA[Which size bilge pump : The big question is, how much...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663226&title=which-size-bilge-pump#1663226 Author: pjc
Subject: 121776
Posted: 26 Oct 2016 at 5:23pm

The big question is, how much water is being taken onboard and why?]]> Wed, 26 Oct 2016 17:23:25 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663226&title=which-size-bilge-pump#1663226 <![CDATA[Which size bilge pump : Fraser Hocks wrote:28mm over...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663221&title=which-size-bilge-pump#1663221 Author: MikeAqua
Subject: 121776
Posted: 26 Oct 2016 at 4:58pm

Fraser Hocks wrote:

28mm over 19mm outlet pipe is a huge advantage and mounting the discharge point where its as low as possible, but wont take much slop back down it will ensure you minimize the impacts.

You can install it so the discharge pipe runs to high point and then down to a lower outlet. This reduces head, but increases surface friction due to the longer pipe.
]]> Wed, 26 Oct 2016 16:58:40 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663221&title=which-size-bilge-pump#1663221 <![CDATA[Which size bilge pump : Biggest pump possible. The smaller...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663219&title=which-size-bilge-pump#1663219 Author: Polar_Kiwis
Subject: 121776
Posted: 26 Oct 2016 at 4:14pm

Biggest pump possible. The smaller the boat the more water you need to get out quickly. Advise from Burnsco friends]]> Wed, 26 Oct 2016 16:14:36 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663219&title=which-size-bilge-pump#1663219 <![CDATA[Which size bilge pump : MikeAqua wrote:Also has a 28mm...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663215&title=which-size-bilge-pump#1663215 Author: Fraser Hocks
Subject: 121776
Posted: 26 Oct 2016 at 3:14pm

MikeAqua wrote:

Also has a 28mm outlet, which allows much more water to be moved than the 19mm common on small pumps.

Wise words! These type of pumps produce very little head (pressure) so the height at which the outlet is above the water its pumping and the restriction in discharge (discharge pipe diameter) have a huge amount of influence on the pumps ability to pump out your bilge.

28mm over 19mm outlet pipe is a huge advantage and mounting the discharge point where its as low as possible, but wont take much slop back down it will ensure you minimize the impacts.

Before installing your pump, drop it in a bucket of water and turn it on. Now lift the discharge pipe up to chest height. you will be quite shocked as the reduction in flow when they have some head to push.

]]> Wed, 26 Oct 2016 15:14:30 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663215&title=which-size-bilge-pump#1663215 <![CDATA[Which size bilge pump : def love the float switch idea....]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663205&title=which-size-bilge-pump#1663205 Author: jakepitsville
Subject: 121776
Posted: 26 Oct 2016 at 1:35pm

def love the float switch idea. makes for alot less hassle

]]> Wed, 26 Oct 2016 13:35:08 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663205&title=which-size-bilge-pump#1663205 <![CDATA[Which size bilge pump : A frightened man with a bucket...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663202&title=which-size-bilge-pump#1663202 Author: pjc
Subject: 121776
Posted: 26 Oct 2016 at 1:06pm

A frightened man with a bucket can shift more water than a pump.]]> Wed, 26 Oct 2016 13:06:53 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663202&title=which-size-bilge-pump#1663202 <![CDATA[Which size bilge pump : Steps wrote:Maybe... If sucks...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663193&title=which-size-bilge-pump#1663193 Author: Titahi
Subject: 121776
Posted: 26 Oct 2016 at 11:21am

Steps wrote:

Maybe... If sucks up too much too fast may tend to pick up a lot of air .. and actual water volume reduced. Would only work at full capacity if have a foot or sp of water in the bulge.

Just a thought..

Thats defnitly one of those comments you read, that sees your head turning rapidly from side to side, finished with a hand palm to the forehead.

The pump will only suck air, AFTER the water ( or majority of it ) has been pumped out..If its located appropiately and sucks air........its done its job

Go as big as is practical for the space available and electrical capacity. Two is better, on seperate fused circuits.....

You'd cut off and gift wrap your left nut to get water out of a leaking boat in an emergency situation

]]> Wed, 26 Oct 2016 11:21:59 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663193&title=which-size-bilge-pump#1663193 <![CDATA[Which size bilge pump : I have a 6m tinny and I have a...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663178&title=which-size-bilge-pump#1663178 Author: MikeAqua
Subject: 121776
Posted: 26 Oct 2016 at 8:46am

I have a 6m tinny and I have a 1,000gph TMC 'heavy duty' bilge pump as the main pump. It's on a blue sure bail float switch.

The 1,000gph seems to be a good size for general bilge pump work. It will keep up with a 1 inch hole (e.g. bung left out Embarrassed

) comfortably. My boat has a grid structure with limber holes so the pump is servicing the entire bilge.

Each outboard produces up to 12A charge and the pump draws 6A so that seemed an appropriate balance. Also has a 28mm outlet, which allows much more water to be moved than the 19mm common on small pumps.

]]> Wed, 26 Oct 2016 08:46:01 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663178&title=which-size-bilge-pump#1663178 <![CDATA[Which size bilge pump : Maybe... If sucks up too much...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663172&title=which-size-bilge-pump#1663172 Author: Steps
Subject: 121776
Posted: 26 Oct 2016 at 7:50am

Maybe... If sucks up too much too fast may tend to pick up a lot of air .. and actual water volume reduced. Would only work at full capacity if have a foot or sp of water in the bulge.

Just a thought..
]]> Wed, 26 Oct 2016 07:50:00 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=121776&PID=1663172&title=which-size-bilge-pump#1663172