SeaXchange SX III Watermaker by Spot Zero — Semi-Automatic, 600 to 2,200 GPD
The semi-automatic SeaXchange: 600 to 2,200 GPD (25–92 gal/h), fully upgradeable in capacity, backlit LCD keypad, NMEA 2000. 230 V 50/60 Hz, single phase. Price on request.
- Genuine Spot Zero, ordered from the factory in Fort Lauderdale with Drake Marine's sizing, factory liaison and commissioning support
- Spot Zero's standard limited warranty — we register the system and handle any claim for you from Thailand
- Questions before you buy? LINE @drakeco or WhatsApp +66 99 406 4680
- Special order — we confirm the factory lead time and the dispatch date with you before payment; special-order items are returnable if faulty
- Pay by bank transfer (SCB) or PayPal — cards accepted through PayPal. International freight at cost, invoiced separately
Delivery & shipping
- Free local delivery — Trang · Krabi · Phuket
- Thailand-wide courier, typically 1–3 days
- Worldwide shipping by courier & sea freight
Fair price check
Our price is the manufacturer's home-market RRP — what this gear sells for where it's made. Branded marine equipment in Thailand typically retails 15–90% above that, when prices are published at all. Ours doesn't.
About this product
The SeaXchange SX III is the semi-automatic version of Spot Zero's seawater watermaker: the same capacities and the same high-rejection membranes as the XTC II, controlled from a backlit LCD keypad rather than a touchscreen. It is fully upgradeable from 600 to 2,200 GPD, so a boat can start small and add capacity later.
Capacities (Spot Zero figures)
| Model | Per day | Per hour |
|---|---|---|
| SX III 600 | 600 gal / 2,271 L | 25 gal / 95 L |
| SX III 900 | 900 gal / 3,407 L | 38 gal / 144 L |
| SX III 1200 | 1,200 gal / 4,542 L | 50 gal / 189 L |
| SX III 1800 | 1,800 gal / 6,814 L | 75 gal / 284 L |
| SX III 2200 | 2,200 gal / 8,328 L | 92 gal / 348 L |
Specifications
| Feed water | Seawater, harbour or brackish water |
|---|---|
| Power | 230 V 60 Hz, up to 14.1 A; 220 V 50 Hz, 12.1 A; single phase |
| Controls | Backlit LCD touch keypad; optional remote LCD |
| Integration | NMEA 2000 compatible |
| Upgrade path | Fully upgradeable from 600 to 2,200 GPD |
| Warranty | 12 months or 1,000 hours, parts and labour; extensions available |
| Made in | USA |
Configurations and factory part numbers
| Model | Membrane vessels | Factory P/N |
|---|---|---|
| SX III 6001Z (600 GPD) | One long vessel; local or remote | 9610004009 |
| SX III 6002Z (600 GPD) | Two short vessels; local or remote | 9610004010 |
| SX III 900Z (900 GPD) | Three short vessels; remote | 9610003811 |
| SX III 1200Z (1,200 GPD) | Two long vessels; local or remote | 9610003406 |
| SX III 1800Z (1,800 GPD) | Three long vessels; local or remote | 9610003809 |
| SX III 2200Z (2,200 GPD) | Four long vessels; remote mount only | 9610003812 |
Each model is drawn in three arrangements: filters on the unit with membranes remote, membranes locally mounted through the unit, or filters and membranes both remote. Remote membranes need the remote-mount hose kit (P/N 4471006880); the wall-mount bracket (P/N 4471004179) can only be used when the membranes are remote mounted.
Spot Zero notes that production capacity can be affected at 50 Hz: the pump motor turns slightly slower on a 50 Hz supply, so a system installed for Thailand is sized with that in mind. Tell us the daily water need and we will specify the capacity that delivers it on 50 Hz.
Dimensions (Spot Zero drawings)
| Control unit with locally mounted filters | 796 mm W × 373 mm H × 331 mm D (31.3 × 14.7 × 13.0 in) |
|---|---|
| Control unit with remote filters | 524 mm W × 373 mm H (20.6 × 14.7 in) |
| Locally mounted membranes, overall width | 6001Z: 1,164 mm (45.8 in); 1200Z: 1,175 mm (46.3 in); 1800Z: 1,168 mm (46.0 in) |
| Long membrane vessel (remote) | 1,174 mm L × 131 mm dia (46.2 × 5.2 in); one vessel 113 mm high, two 231 mm, three 314 mm, four 419 mm |
| Short membrane vessel (remote) | 690–692 mm L (27.2 in); two vessels 231 mm high, three 312 mm |
| SW boost pump (standard) | 384 mm × 252 mm × 162 mm |
| Short SW pre-filter, double 2.5 × 10 in (standard) | 305 mm W × 125 mm D × 316 mm H; the 4.5 × 20 in commercial pre-filter (291 × 197 × 598 mm) is supplied at no upcharge if specified when ordering |
| Fresh-water flush, 2.5 × 10 in (standard) | 243 mm × 145 mm × 316 mm |
| Additional remote-mounted LCD keypad (option) | 152 mm × 152 mm × 21 mm |
| Wall bracket (option, P/N 4471004179) | 598 mm × 260 mm × 314 mm |
Weight is not stated on the published drawings; we confirm it with the factory for the quoted configuration.
Installation, plumbing and wiring
Following Spot Zero's SeaXchange flow drawing: seawater intake through a clamshell inlet (recommended), seacock and sea strainer to the boost pump, which must be installed below the waterline and fed with 3/4 in ID wire-reinforced hose; the boost pump feeds the pre-filter and then the control unit through 3/4 in ID tubing. Membrane supply and return are 1/2 in OD, membrane product 3/8 in OD, the overboard concentrate 1/2 in OD run free and unrestricted, and product to tank 3/8 in OD. The fresh-water flush cartridge is fed from the ship's pressurised fresh-water supply through a check valve in 3/8 in OD or larger tubing. Power is a single-phase inlet (L1, L2, ground) to the control unit, which feeds the booster pump and the high-pressure pump; the LCD keypad and the optional remote keypad run on 24 V DC; an NMEA 2000 bus connection and a tank-level switch input are provided.
Service parts for this system
All of these are listed in our Spot Zero parts section at Spot Zero's US list price, special order from the factory with the lead time confirmed before you pay; tell us the model and serial number and we will confirm the exact membrane size and count for your configuration.
Pre-filtration and flush
- SeaXchange Commercial Pre-filter (5) (FI-SW0005) — SeaXchange commercial pre-filter, 5 micron
- SeaXchange Stage 1 Pre-Filter (25) (FI-SF0035) and SeaXchange Stage 2 Pre-filter (5) (FI-SW0003) — stage 1 (25 micron) and stage 2 (5 micron) cartridges
- SeaXchange Freshwater Flush Filter (FI-SW0002) — fresh-water flush filter
Membranes and seals
- SeaXchange Membrane 2.5" x 40" (MM-SW0001) — 2.5 × 40 in seawater membrane (long vessel)
- SeaXchange Membrane 2.5" x 21" (MM-SW0003) — 2.5 × 21 in seawater membrane (short vessel)
- O-ring Seal Kit - Membrane 2.5" (FI-SW0008) and O-Ring Kit, SeaXchange Membrane 2.5" (MM-SW0044) — membrane O-ring kits
- SeaXchange Membrane Chemical Cleaner, Stage 1 (MM-SW0012) and SeaXchange Membrane Chemical Cleaner, Stage 2 (MM-SW0013) — membrane chemical cleaners
Storage
- Preventative & Storage Solution (MM-SF0000) — membrane storage solution
Manufacturer documents
Spot Zero publishes the drawings and manuals openly; these are the current versions we work from:
- SX III configuration sheet (PDF)
- SX III product sheet (PDF)
- Membrane replacement, installation and winterisation guide (XZ II / XTC II / ZTC II) (PDF)
- Spot Zero standard limited warranty (July 2026) (PDF)
What it costs
Spot Zero's US list price starts at US$15,400 for the SX III. We quote per boat; freight to Thailand at cost, invoiced separately.
Warranty
Spot Zero's standard limited warranty on built-in systems is 12 months or 1,000 hours, parts and labour (membranes, filters, seals and other consumables excluded). Spot Zero's extended warranties — Gold (+1 year/1,000 h, parts), Platinum (+2 years/2,000 h, parts) and Diamond (+2 years/2,000 h, parts and labour) — can be added at any time during the standard term; ask us for the current prices. Warranty cover applies in whichever country the fault occurs.
How we supply Spot Zero in Thailand
Drake Marine supplies Spot Zero as a factory-direct purchase with our support around it: we size the system to the hull and its tankage, specify the 50 Hz configuration for boats staying in the region, handle the technical questions with Fort Lauderdale, support commissioning on the dock or in the shed, register the warranty, and keep the filters, membranes and service parts on order from Thailand rather than on a ship from Florida each time. Freight is at cost and invoiced separately, so the price you see is the equipment.
Tell us the boat, the tankage and where she will be kept and we will size the system, confirm the 50 Hz configuration for Thailand and quote the equipment with the factory lead time: LINE @drakeco, WhatsApp +66 99 406 4680 or email.
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