Water, water everywhere and not a drop to drink. The idea of being at sea began when I was very young and enraptured with stories in a survival book, frequently of downed airmen adrift in the ocean.
Water enters the sea chest and is strained. It then passes through a 2" ball valve and to a saltwater aquarium pump.
Boost Pump: - Likely not needed as the high pressure pump will be below the waterline.
Blueline 70 HD Pump 29 gpm, max head 39 ft $290
Little Giant 5MD-SC 16 gpm @ 3ft, 15 @ 10 ft. $260
Pan World 200PS Pump 29 gpm, max head 39 $277
Industrial Pressure Gauge Stainless Steel, Liquid-Fillable, 15 psi $90
Pressure Switch - If we add a boost pump it would supply saltwater for research projects, wash down, and plumbing so it would be convenient to have an automatic pressure switch.
Pre-filters for Watermaker water only, not the wash down supply path.
Harmsco Polyester-Plus 20" × 2¾", 20 Micron Pleated Sediment Cartridge (12 GPM, 12 sq ft Media) $21
Harmsco Polyester-Plus 20" × 2¾", 5 Micron Pleated Sediment Cartridge (12 GPM, 12 sq ft Media) $21
Pentek 150560, 3G 20" Clear Filter Housing $65 x 2 = $130
High Pressure Pump Motor
North American (F56C1S4C) Electric Motor - 1HP 1800RPM 56CFR 1PH TEFC $250
High Pressure Pump:
Cat Pump 247 Plunger Pump, 3.6 gpm, 1/2" FNPT Inlet x 3/8" FNPT Outlet, 1200 psi $1485
RO Membrane:
4 -Filmtec SW30-2521 Sea Water 300 GPD RO Membrane Element $195 x 4 $780
Membrane Housing:
4 - 3" 316 Stainless Steel Sch 40, 84 inches x 2 $700 and 4 - 3"316 Stainless Steel sch 40 end caps and plugs $250 Total aprox $1000
HCTI Seawater Vessels PV-2521-SW $305 each $1220
Water enters the sea chest and is strained. It then passes through a 2″ ball valve and to a saltwater aquarium pump.
Boost Pump: – Likely not needed as the high pressure pump will be below the waterline.
Blueline 70 HD Pump 29 gpm, max head 39 ft $290
Little Giant 5MD-SC 16 gpm @ 3ft, 15 @ 10 ft. $260
Pan World 200PS Pump 29 gpm, max head 39 $277
Industrial Pressure Gauge Stainless Steel, Liquid-Fillable, 15 psi $90
Pressure Switch – If we add a boost pump it would supply saltwater for research projects, wash down, and plumbing so it would be convenient to have an automatic pressure switch.
Pre-filters for Watermaker water only, not the wash down supply path.
Harmsco Polyester-Plus 20″ × 2¾”, 20 Micron Pleated Sediment Cartridge (12 GPM, 12 sq ft Media) $21
Harmsco Polyester-Plus 20″ × 2¾”, 5 Micron Pleated Sediment Cartridge (12 GPM, 12 sq ft Media) $21
Pentek 150560, 3G 20″ Clear Filter Housing $65 x 2 = $130
High Pressure Pump Motor
North American (F56C1S4C) Electric Motor – 1HP 1800RPM 56CFR 1PH TEFC $250
High Pressure Pump:
Cat Pump 247 Plunger Pump, 3.6 gpm, 1/2″ FNPT Inlet x 3/8″ FNPT Outlet, 1200 psi $1485
RO Membrane:
4 -Filmtec SW30-2521 Sea Water 300 GPD RO Membrane Element $195 x 4 $780
Membrane Housing:
4 – 3″ 316 Stainless Steel Sch 40, 84 inches x 2 $700 and 4 – 3″316 Stainless Steel sch 40 end caps and plugs $250 Total aprox $1000
HCTI Seawater Vessels PV-2521-SW $305 each $1220
Resources:
“Watermaker: Doing It Yourself”
How to make a 30 gallon per hour watermaker using off the shelf parts.
Seawater Pro Watermaker Kits