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#1
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Water systems on my boat - need suggestions, please.
I'm no exoert, but I don't like using PVC anwhere on a boat. As it
ages, it gets brittle and can break. For underground or in a house, this isn't an issue. But in a boat, there is constant vibration, etc. that can cause it to crack when it looses its' elasticity. The only time I've ever had uncontrolled water entering a boat, was when a PVC adapter that a previous owner had put on a through hull failed (it's amazing how fast the water comes through a 3/4" thru-hull when this happens). Adam wrote: This is a very short list/description of what I'm going to install on my boat. Any suggestions, changes or recommendation are more than welcome. Thanks in advance Adam Project - 37' "Spray" by Bruce Roberts, GRP, wheelhouse, 2-4 people aboard, off shore cruiser. Fresh water - 2x60 gallons polyethylene water tanks, 5/8" I.D PVC with Nylon Reinforcement hose to main bronze manifolds (with red brass nipples), GROCO WSC60, ½" I.D PVC with Nylon Reinforcement hose - Galley, Head sink and shower, Cockpit shower. Sea water - Washdown - Jabsco 30700-012, 1/2" I.D PVC with Nylon Reinforcement hose. PVC fittings - two utility tubes (fore & aft). Gray water - 1x 30 gallons polyethylene grey tank, for galley, head sink and head shower. All "piping" with 1" Sanitation Hose, ABS/PVC fittings. Discharge - Commercial Duty Water Puppy Model 16360-1003 Jabsco & Check Valve + Hand Diaphragm Pump Jabsco - Seacock just above WL. Bilge - Rule 3700 Bilge Pump & Rule Superswitch & Check Valve + two Hand Diaphragm Pump Jabsco - one operated from cockpit and one from wheelhouse. Sanitation - 30 gallons polyethylene holding tank with Macerator pump Jabsco + Check Valve. Dock discharge through deck fill. Fresh water - from fresh water tanks, water maker and shore supply Fresh water supplied through the two deck fills (star or port side), or through pressurized shore supply (with pressure regulator). On dock - fresh water shore supply can be connected directly to sea water system. Head - water from sea water system - discharge to holding tank or outside through Y valve, 1 1/2" Sanitation Hose Two seacock 2" - one for IN and one for OUT. Separate faucets for seawater only in galley and head sink. As a backup - galley and head sink have foot pumps for fresh water - not pressurized through the Y valve for seawater optional. Questions: What kind of water heater (diesel fuel?), which toilette? I didn't know that I have to many to choose from - thanks Peggie :-), What about strainers/filters and check valves - I have to install some of them. -- Dan Best - (707) 431-1662, Healdsburg, CA 95448 B-2/75 1977-1979 Tayana 37 #192, "Tricia Jean" http://rangerbest.home.comcast.net/TriciaJean.JPG |
#2
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Water systems on my boat - need suggestions, please.
Dan;
I have been told that ABS shouldn't be used because can break. But PVC is OK. In my system Seacocks and all fittings are bronze made. PVC for pressurized seawater system PVC/ABS in grey system only. BTW "Tricia Jean" - looks nice Adam "Dan Best" wrote in message ... I'm no exoert, but I don't like using PVC anwhere on a boat. As it ages, it gets brittle and can break. For underground or in a house, this isn't an issue. But in a boat, there is constant vibration, etc. that can cause it to crack when it looses its' elasticity. The only time I've ever had uncontrolled water entering a boat, was when a PVC adapter that a previous owner had put on a through hull failed (it's amazing how fast the water comes through a 3/4" thru-hull when this happens). Dan Best - (707) 431-1662, Healdsburg, CA 95448 B-2/75 1977-1979 Tayana 37 #192, "Tricia Jean" http://rangerbest.home.comcast.net/TriciaJean.JPG |
#3
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Water systems on my boat - need suggestions, please.
PVC ftgs work well, but they should not be installed with any stresses
on them (ie. nothing resting on top of them or pulling on them). Also, when connecting plastic to metal with threads, try to make the metal the female and the plastic the male - it's easy to tighten the connection to the point where a metal male thread will split the female plastic ftg. If it's necessary to use a female plastic ftg, put 5 or 6 layers of teflon tape on the male end and only tighten by hand until it stops leaking. Start threads carefully - it's _very_ easy to cross thread plastic on metal. PVC pipe needs firm support every 2' and any fixture connections s/b made with hose to reduce vibration and stress on the pipe when the boat hull "moves". Suggest, if you have room, you install a TEE ftg direct onto the seacock and take off the water from the side. Cap or plug the top of the TEE (make sure to use lots of teflon goo and tape and tighter LESS than the TEE/ThruHull joint. If/when the thru-hull becomes plugged, you close the seacock as possible, remove the plug, thread on (quickly) a short length of pipe you have handy to raise the opening above the water line, then open the seacock and poke everything clear with a length of smaller diameter pipe. On the supply, works best when you do not have a permanently installed grill over the thru-hull on the outside of the hull, but instead rely on a large cleanable strainer inboard. All hose s/b opaque because light will encourage various live growths in the hose. Rufus Adam wrote: Dan; I have been told that ABS shouldn't be used because can break. But PVC is OK. In my system Seacocks and all fittings are bronze made. PVC for pressurized seawater system PVC/ABS in grey system only. BTW "Tricia Jean" - looks nice Adam "Dan Best" wrote in message ... I'm no exoert, but I don't like using PVC anwhere on a boat. As it ages, it gets brittle and can break. For underground or in a house, this isn't an issue. But in a boat, there is constant vibration, etc. that can cause it to crack when it looses its' elasticity. The only time I've ever had uncontrolled water entering a boat, was when a PVC adapter that a previous owner had put on a through hull failed (it's amazing how fast the water comes through a 3/4" thru-hull when this happens). Dan Best - (707) 431-1662, Healdsburg, CA 95448 B-2/75 1977-1979 Tayana 37 #192, "Tricia Jean" http://rangerbest.home.comcast.net/TriciaJean.JPG |
#4
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Water systems on my boat - need suggestions, please.
Thanks Rufus
Adam "Rufus Laggren" wrote in message news:qoUlc.32881$kh4.1589335@attbi_s52... PVC ftgs work well, but they should not be installed with any stresses on them (ie. nothing resting on top of them or pulling on them). Also, when connecting plastic to metal with threads, try to make the metal the female and the plastic the male - it's easy to tighten the connection to the point where a metal male thread will split the female plastic ftg. If it's necessary to use a female plastic ftg, put 5 or 6 layers of teflon tape on the male end and only tighten by hand until it stops leaking. Start threads carefully - it's _very_ easy to cross thread plastic on metal. PVC pipe needs firm support every 2' and any fixture connections s/b made with hose to reduce vibration and stress on the pipe when the boat hull "moves". Suggest, if you have room, you install a TEE ftg direct onto the seacock and take off the water from the side. Cap or plug the top of the TEE (make sure to use lots of teflon goo and tape and tighter LESS than the TEE/ThruHull joint. If/when the thru-hull becomes plugged, you close the seacock as possible, remove the plug, thread on (quickly) a short length of pipe you have handy to raise the opening above the water line, then open the seacock and poke everything clear with a length of smaller diameter pipe. On the supply, works best when you do not have a permanently installed grill over the thru-hull on the outside of the hull, but instead rely on a large cleanable strainer inboard. All hose s/b opaque because light will encourage various live growths in the hose. Rufus Adam wrote: Dan; I have been told that ABS shouldn't be used because can break. But PVC is OK. In my system Seacocks and all fittings are bronze made. PVC for pressurized seawater system PVC/ABS in grey system only. BTW "Tricia Jean" - looks nice Adam "Dan Best" wrote in message ... I'm no exoert, but I don't like using PVC anwhere on a boat. As it ages, it gets brittle and can break. For underground or in a house, this isn't an issue. But in a boat, there is constant vibration, etc. that can cause it to crack when it looses its' elasticity. The only time I've ever had uncontrolled water entering a boat, was when a PVC adapter that a previous owner had put on a through hull failed (it's amazing how fast the water comes through a 3/4" thru-hull when this happens). Dan Best - (707) 431-1662, Healdsburg, CA 95448 B-2/75 1977-1979 Tayana 37 #192, "Tricia Jean" http://rangerbest.home.comcast.net/TriciaJean.JPG |
#5
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Water systems on my boat - need suggestions, please.
Dan;
I have been told that ABS shouldn't be used because can break. But PVC is OK. In my system Seacocks and all fittings are bronze made. PVC for pressurized seawater system PVC/ABS in grey system only. BTW "Tricia Jean" - looks nice Adam "Dan Best" wrote in message ... I'm no exoert, but I don't like using PVC anwhere on a boat. As it ages, it gets brittle and can break. For underground or in a house, this isn't an issue. But in a boat, there is constant vibration, etc. that can cause it to crack when it looses its' elasticity. The only time I've ever had uncontrolled water entering a boat, was when a PVC adapter that a previous owner had put on a through hull failed (it's amazing how fast the water comes through a 3/4" thru-hull when this happens). Dan Best - (707) 431-1662, Healdsburg, CA 95448 B-2/75 1977-1979 Tayana 37 #192, "Tricia Jean" http://rangerbest.home.comcast.net/TriciaJean.JPG |
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