[C320-list] Washdown pump install prep question(s)

[Graeme Clark]

Scott

I can only answer one of your questions but it's useful for folks to know this anyway for all sorts of reasons!

The water line is approximately two to three inches above the top edge of the door to access beneath the galley sink!

I discovered this when I replaced the galley sink hose and the new one is clear enough to see how far up the water level is!

Much higher than I had previously estimated

I reckon that puts it well above the level of the batteries etc. 

Graeme 

Sent from mobile: please excuse typos etc.!


> On 22 May 2017, at 11:46, Scott Westwood <scottwestwood at bellsouth.net> wrote:
> 
> The admiral has approved installing a washdown pump since the cheap "drop-over-the-side" one just quit.  I have most of it planned out but have some questions.  Have a week long trip planned in June so I need to get cracking.
> I am not near the boat but...
> 1. I saw a thread for this (Jeff's??) that some have tied into the head sink thru-hull?  I like the Y-valve idea but can't yet find where to buy one?    
> 2. What about siphoning?  Any concerns I need to consider?  Check-valve?          a. I am thinking about installing it behind batteries like Jeff did.  Out of the way but easy to get to if needed/maintain.  Is that above water line?
>         b. Need a siphon loop from Y-valve to strainer?
> 3. I saw Jim tied his to the macerator pump thru-hull but mine is still connected.  How do you avoid "junk" getting sucked up if you had both tied together (with y-valve??)  Last thing I want to do is have "any" waste coming out onto the deck.  Not matter how little..  Not likely option for now since mine is still connected.
> 
> I'm leaning to the head sink drain with Y-valve so you can flush the line with fresh water  Is running water in sink enough supply flow to rinse the lines??  You can, of course, fill the bowl to start.....
> Rough plan so far:1. Y valve to sink drain thu-hull2. Mount strainer then pump with built in pressure switch behind batteries in Starboard Settee3. Tie "fused" power to windlass power.  I don't use the windlass much (if at all) and no need for breaker.4. Mount hose fitting in "split" anchor locker with short folding hose.  This will allow me to change to longer hose if I want.  I prefer single self-folding/short hose (Maybe 10 ft).  80-90 percent of the time this will be for anchor washdown.  If boat gets hot (and I want to wash rest of boat down) I can get out the long hose.5. Any comments on using pump with built in pressure switch or pump with separate pressure switch?  Single point of failure?  Reliable enough so not an issue? 
> Open to any input others might share. 
>  
> 
> Thanks,
> Scott Westwood scottwestwood at bellsouth.net H (919)-362-8538     C (919)-618-7185