Plumbing


Deck Fill

Wilcox Crittenden -- stamped with 1 1/4 on inside of cap. The O-ring is 1½" ID x 3/32" thick. Talking with them, they know nothing about these older deck fills, i.e., why do my o-rings get chewed up in six months, why the o-ring thickness changed to a thicker o-ring (wider groove in cap), etc.


Head

Holding tank -- triangular height (22" high, 21" base, 25" hypotenuse, 15" long). Volume is about 2 cubic ft. (~15.75 gallons). Vent hose is 5/8" x 8ft. (hose & through hull new, 8/1999)

Raritan PH head (old design with multi-turn inlet valve). I removed the LWS spring on the input (9/98), which allowed more water into the head. I replaced the pump unit with the PHII pump assembly (3/1999). Rebuild kit: PHRKIIC.

Inlet pipe: 3/4" ID barb
Outlet pipe: 1 1/2" ID barb

According to Raritan, each pump stroke (i.e., up and down) of the PHII moves approximately 1 pint (approximately 1 gallon in 10 seconds). With 1½" ID hose, 1 pint is 16" length of hose.


Hose

Type

ID OD Hose Clamp Size
Potable, reinforced 1/2" 11/16"  
Potable, reinforced 5/8" 7/8"  

For PVC adapters to hose, see Sealand Technology. A 90° bend kit  for 1½" hose is part number 307-230311.


Lectra/San

Raritan Lectra/San MC (installed 5/2001), serial number MC 004281 0900. Rebuilt 6/2009 -- electrode pack, motor seals.

Seawater -- 4.3 oz. salt per gallon of water (~4% salinity). Solar salt dissolves more readily than table salt and is cheaper! Add ½ cup salt per flush in brackish water.

10-12 pump strokes delivers about 1 to 1 1/4 gallons.

According to Raritan, use the Raritan Concentrate to deodorize and lube the system. Either use the metered system (TWK Kit) or add the concentrate to the salt tank.

Every six months, use muriatic acid (31% HCl) to clean the system per the instruction sheet.

The salt tank should be above the water line with a valve on the output to regulate the salt flow into the toilet. Too much salt will burn out the electrode pack!

To test the electrode pack, measure the voltage drop across the shunt on the control module (1" x 3" metal on forward side of tank). During the treatment cycle, the voltage should be between 16 and 26 millivolts. If the reading is noticeably less than 16 millivolts, the electrode pack is probably bad. You can buy Raritan Lectra/San parts from www.holtmarinesystems.com in Chester, MD.

I replaced the electrode pack on 8/8/02. The voltage reading was 11 mV. I replaced it again in 6/2009. The reading was 9.8 mV.

Device

Current (Raritan)

Current (Measured)

Mixer motor 3 - 4A 4.3A
Macerator motor 5 - 7.5A 8.7A
Electrode pack 19.5A 19A

Fuses: MDL 6.25, MDL 30, MDL 35 (only available at Fawcetts and Raritan)

Maintenance

  1. Flush out system with three complete cycles and flushes of plain seawater.
  2. Flush toilet dry.
  3. Add one pint of Muriatic acid to two gallons of fresh water.
  4. Pour solution in head and flush dry without using Lectra/San
  5. Pour one gallon fresh water into bowl, but don't flush.
  6. Let it all sit for 45 minutes.
  7. Pump head 120 times with seawater (minimum of 10 gallons of water).
  8. Run a Lectra/San cycle.

Plumbing

Galley sink drain strainer gasket -- 3 1/2"

Galley sink drain hose is 1 1/2" ID. The seacock for it is 1 1/2" (pipe size).

Pressurized water hose ID is 1/2".

Cockpit and side deck drains use 1 1/2" ID hose to a 1 1/4" seacock.

Seacock Location Size/Model Other
Engine seawater intake Main bilge ¾" intake strainer to Conbraco 78-115-01F ¾" full-flow seacock. (Replaced 1/2001)
Groco ARG-750-S raw water strainer.
20 GPM @ 20 In-Hg pressure drop. ¾" NPT pipe ports
Seawater intake Main bilge ¾" intake strainer to Conbraco 78-115-01F ¾" full-flow seacock. (Installed 1/2001). Used for all seawater uses exclusive of engine cooling.
Groco ARG-500-S raw water strainer. (new 2/2001). Strainer replacement basket SS-69-B. O-ring 2¼" ID x 1/8".
12 GPM @ 20 In-Hg pressure drop. ½" NPT pipe ports. ¾" ID hose.
Head discharge Head sink Conbraco 65-BN8-06 1½" thru-hull to Conbraco 78-116-01F 1½" full-flow seacock. (Installed 2/2001). Conbraco 65-907-54 1½" to 1½" hose 90º pipe to hose adapter
Sink discharge Head sink Wilcox-Crittenden 1½" seacock. Rebuilt 3/2001  
Sink discharge Galley sink Conbraco 65-BN8-06 1½" thru-hull to Conbraco 78-116-01F 1½" full-flow seacock. (Installed 2/2000).  
Port deck discharge Nav station Wilcox-Crittenden 1½" seacock. Rebuilt 3/2001  
Port cockpit discharge Engine compartment Wilcox-Crittenden 1½" seacock. Rebuilt 3/2001 Scuppers are ABI 570277 stainless steel (installed with new bridge deck)
Starboard deck and cockpit discharge Engine compartment Wilcox-Crittenden 1½" seacock. Rebuilt 3/2001 The starboard deck and cockpit drain are plumbed to a single seacock
Aft cockpit drains (x2) Cockpit sole 1½" hose Thru-hull above the water line

Pumps

Bilge

Manual - Whale Gusher 10 MKII Pump (Imtra is importer 508-995-7000). Replaced pivot pin kit 12/98 (AS3719). Spare kit AK3706 (rebuilt 12/98). Hose size 1.5"
            - Guzzler 400 located under cabin sole (installed 2007)

Electric - Rule 1100 GPH, 15' of 1 1/8" hose (above bottom of bilge)
            - Rule 750 GPH (Rule-Mate), 3/4" hose (at bottom of bilge)

Sump - Rule 360 GPH, 3/4" hose

Galley

Fresh water pump: Jabsco PAR-MAX3 Model 30600-0012
    Spares:    Valve kit              30613-1001
                    Diaphragm Kit    30617-1000
                    Pressure switch   18753-0141
A small air leak at the input to the pump will cause poor flow and pressure out of the pump. You can hear this leak when the pump turns off — it sounds like "fizzing" inside the pump.

Accumulator Tank: Shurflo Model 181-203 (24 oz.). Installed 4/01. Charge it to 20 PSI.

Seawater pump -- ShurFlo 8050-204-033 1.6 GPM to a Scandvik tap (103100-RC)

Whale Flipper Pump - Service kit AK0405

Washdown

Jabsco Waterpuppy Model 6360 1001  12V 8A -- I talked with Jabsco and they told me that this pump is not correct for a washdown pump (no internal pressure switch) (9/2000)


Water Filter

Drinking water filter is plumbed into the cold tap at the galley sink. The filter is a GE SmartWater GX1S01C housing with a FXULC filter. The filter is good for 600 gallons or 6 months. Flow rate is 0.6 gpm.


Water Heater

Heat Transfer Products SuperStor SS6M, 6 gallons (new 2005)

14" diameter x 16" high.

Pressure relief valve: Robertshaw Tempstat Model TP1100-1 Size 3/4"     75psi @ 210°.

I plumbed the water heater from the fitting near the thermostat housing as the coolant source to the water heater. For the return, I put a T-fitting on the coolant return line from the heat exchanger to the block.


Water Tanks

Forward Tank - 64 gallons (measured, standard, not imperial). Clorox 2 TBSP.

Aft Tank - 25 gallons (measured, standard, not imperial). Clorox 1 TBSP

Recommended Clorox addition from Clorox web site -- 1 teaspoon (1/6 oz or 5 ml) per five gallons (however, increase this to per 10 gallons of water for better taste). One cap full is one tablespoon (TBSP).

With the family on board and showers everyday, we average 2 gallons per person per day.