Washdown Pump

O

Oasis

Member
Joined
Sep 10, 2002
RO Number
10105
Messages
122
I am thinking of adding a washsdown pump. Should I spring for the additional capacity or is 3.5 gpm at 40 lbs enough.
 
Right now it is a toss up between the Johnson and the Shureflow. An additional 1.5 gallons per minute is a big increase. I just wonder if there is enough pressure to support the flow through the hose.
 
Bill,

A smaller diameter hose is going to increase both the velocity of the water AND the pressure drop. If you want to minimize the pressure drop, run larger hose with a nozzle at the end of the run.
 
I just put in a 4.0 gph pump which works well (1/2 inch ID hose), but a 5.0 would be even better. I say get the largest pump you can afford.
 
I agree with Al (FlyWright). But it wouldn't pay to go much over 5 gal./min., as the price starts REALLY going up for pumps that exceed that capacity.
 
I have a Shurflo Extreme Pro Blaster for raw water wash down; mostly of ground tackle but also my teak decks. It gets a lot of use since we anchor out a lot, have an all-chain rode and are year around boaters. I have been very happy with the results and use a standard size garden hose and spray nozzle. Here is a spec sheet that shows the relationship of pressure to water flow, along with power consumption (I have the 24v, so double the amps for 12v):

http://www.shurflo.com/files/Educat...s/pds-Extreme ProBlaster 24v 5901-3202 12.pdf

George
Hatteras 56MY
Boston Whaler 130 Sport
 
quote:
Originally posted by AbsoLoot

Bill,

A smaller diameter hose is going to increase both the velocity of the water AND the pressure drop. If you want to minimize the pressure drop, run larger hose with a nozzle at the end of the run.
Click to expand...


Correct.
 
I'm going the trailer park route.

A coworker just gave me a Flotec pump they used to use to empty their pool when they had one.

Attach a line to it. Attach a garden hose to it. Secure it to the railing. Throw it over the side. Plug it in. Wash muck off anchor rode and deck. Unplug it. Pull it in. Untie it. Put it in a bucket and throw it in the rode locker. When all is said and done, I think I'll be out about $15 including the bucket.
 
Let me ask a dumb question as I am contemplating adding one up at my foredeck to washdown the anchor.....Being one that likes to keep thing simple, why would it not work/be a bad idea, for me to just T into the existing cold water line outflow of my house water pump, install a valve that lets me cut the line off for winter months, etc. plumb a line up to the foredeck, install a hose fitting rb2@gr5t the deck, and poof...instant washdown. Why should I install an entirely separate water pump and associated electrical when I already have a good working pump and only going to be using for washing chain rhode once a day or so?
 
quote:
Originally posted by Woodsong

Let me ask a dumb question as I am contemplating adding one up at my foredeck to washdown the anchor.....Being one that likes to keep thing simple, why would it not work/be a bad idea, for me to just T into the existing cold water line outflow of my house water pump, install a valve that lets me cut the line off for winter months, etc. plumb a line up to the foredeck, install a hose fitting rb2rb2@gr5tgr5t the deck, and poof...instant washdown. Why should I install an entirely separate water pump and associated electrical when I already have a good working pump and only going to be using for washing chain rhode once a day or so?

Click to expand...


No reason why it would not work, however, you are now tapping into a limited resource.

Come to the Dark Side wood. Install a trailer park washdown system.
 
David, you mean tapping into my freshwater supply vs. raw water? I hold 300 gallons of water so I have plenty compared to our silverton that held 110 gallons!

If you all are using a raw water pump, where are you tapping into the source? T'ing into the raw water toilet intake?
 
My raw water washdown pump has a dedicated through hull and seacock. It's output is tee'd, one side to the transom, and the other side to the bow. I only have a 40 gallon fresh water tank, so using raw water to wash the anchor off, or to cool off while standing on the swim platform on a hot summer day is easier on my limited fresh water supply.
eric
 
quote:
Originally posted by Woodsong

......... If you all are using a raw water pump, where are you tapping into the source? T'ing into the raw water toilet intake?
Click to expand...


That's how mine is set up and it works just fine. I wouldn't waste potable water washing down an anchor or chain.
 
I installed both fresh and salt water taps up on the bow. If fresh water usage is not an issue, then I use the former; the Craftsman Shallow Well pump can really put out. When we will not be seeing a dock for several days, then the latter. My SW wash down was tapped into an existing through-hull left over after a conversion to fresh water heads. Remember to have some sort of strainer installed.

George
Hatteras 56MY
Boston Whaler 130 Sport
 
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