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Plumbing

We removed all of the old through-hulls and plastic gate valves that were the original seacocks. Most of them were still functional but were in inaccessible places and the old gate valves were downright scary. For peace of mind and a better survey, we wanted real seacocks. We used Marelon components throughout, most of which we were able to find in a variety of surplus yards on a springtime trip to Florida. We feathered out the edges of the old holes in the hull and sealed them with many layers of glass and epoxy. The new galley sink and engine cooling water sea cocks are mounted on either side of the companionway, the head sink drain is directly below the sink and the head intake and discharge are accessible in the compartment under the port V berth.

Pump out stack

Pump out stack in V berth

Waste plumbing

Waste plumbing under port V berth

Pump out stack

Macerator pump and seacock under port V berth

Tanks under V berth

Water and Holding tanks under V berth

The original water fill and waste pumpout deck fittings were side by side in the bottom of the chain locker. This was probably a convenient way to mount them when the boat was built but it struck us as being singularly unsanitary and inconvenient to use. Also, the original 3 gallon holding tank was much too small to be of any use for even a weekend trip or with more than one person aboard. We initially mounted a 13 gallon Kracor holding tank in place of the original water tank and installed a new 10 gallon water tank (Ronco B217) under the forward end of the starboard settee. The new water fill deck fitting is to starboard over the hanging locker.

The head pumps directly into the holding tank. The tank can be discharged either through a port-side deck fitting (the plumbing runs in the corner between the hull and the head bulkhead at the aft end of the port V berth) or through a macerator pump. There is no need for a Y valve since the deck fitting is closed when the pump is used (well off shore, of course) and vice versa. All of the waste plumbing is either Schedule 40 PVC or heavy wall Shields Series 148 vinyl hose. In 2005 we removed the rectangular Kracor holding tank and replaced it with a 20 gallon V bottom Ronco tank (B103). We also added another 13 gallon Ronco water tank (B102) in the storage space forward of the holding tank. Click on the picture for more information.

I would be remiss if I didn't mention the vented loops. After spending a sleepless night at home wondering whether we had properly closed the lever on the head (we had, fortunately) we installed a simple vented loop in the hose between the manual head pump and the toilet bowl. This prevents flooding the boat if the pump lever is left in the 'fill' positon. Later, after several occasions of finding the bowl filled with stuff that should have remained in the holding tank, we determined that the joker valve on the head output was not reliable. We have added another vented loop to the line between the head and the holding tank. Both vented loops are mounted in the head compartment on the bulkhead between the head and the V berth.

There is one more place that a vented loop could be beneficial if there were a good place to mount it. That is between the macerator pump and the seacock. Without it, we have found that we must remember to close the seacock after each time we use the macerator pump to empty the holding tank. Otherwise, the tank will backflood through the macerator pump and fill up to the waterline. The vented loop between the toilet and the tank prevents the boat from flooding, but the seawater in the tank uses up most of the tank capacity.


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last modified: February 12, 2021