[C320-list] Fresh water head-flush plumbing

[Richard A. Walker]

THIS WORKS GREAT


The following is thanks to John Vez.  I have edited some of his emails and
reformatted the description. 

 

One rather straightforward enhancement is method of flushing (which 

I wholeheartedly endorse, especially in salt water) is to T the sink drain

To the through hull hose that the head is currently attached to. This way
you leave

the seacock closed and simply turn the water on into the sink. As you

flush the water is drawn from the sink. It will also operate as designed if
you open the head thru-hull.

 

Materials.  
 

1. 2 T hose fittings, 3/4" 
2. 1 3/4" PVC In line Check Valve, Raritan, Model #308585- 

(There is a spring in the valve that pushes the ball into the 'closed
position'. I 

believe that the Spring actually was too strong for the weak water flow into


the galley sink, so I snipped a couple of coils out of it and it has worked
great.)

3. 16 ss hose clamps ½” to 1 1/8” 

4. 2 Feet of Series 162 Polyester Reinforced Clear PVC Tubing ID ¾” 

 

Steps in the Job: (For my boat year 2000)

 

 

Remove the door from the cabinet in the head by unscrewing the 4 screws. 
Remove the top drawer from the storage cabinet in the master bed room. 
Make sure both thru-hull fittings are closed 
Remove the existing hose from the sink to the thru-hull fitting 
Use 2 ss clamps at every step. 
Make a cut and place a T in the hose that goes from the seacock to the
toilet 
Cut the hose from the sink drain at about 4” from the cabinet 
opening and insert the check valve so the arrow is pointed down (water can

only travel from the drain down).  Place the inspection port pointing toward
the door in case you want to clean out the check valve with out removing the
entire hose.

Place a T in below the check valve in the same line. 
Reinstall the hose 
Connect the T'd sections. 
Reinstall the doors. 
Test both fresh and sea water flushing. 
That's it!

 

To flush, simply fill the head sink and pump the head as you normally

would.

 

 



Cheers,
 
Dick Walker
740 Olive Ave.
Coronado, CA 92118-2136
619.435.8986




-----Original Message-----
From: c320-list-bounces at catalina320.com
[mailto:c320-list-bounces at catalina320.com] On Behalf Of Len
Sent: Saturday, July 29, 2006 2:11 PM
To: C320 List
Cc: belairlk at gmail.com
Subject: [C320-list] Fresh water head-flush plumbing

Has anyone connected the head sink drain to the head sea inlet line for
freshwater flushing?  Saw this on a boat:  tubing "T'd" into sink drain,
then "T'd" into head inlet line, with valve to open/close.   To flush, close
sink drain valve and head inlet valve then fill sink thumb-deep and flush
head with fresh water.  Prevents smells of seawater organisms from seawater
in plumbing lines.

Like to know your experiences before installing on my boat.

Len
Aqua5  #1070