Spot Zero ZTC II Double Pass Water Purifier — 1,000 / 2,000 / 3,000 GPD

เกี่ยวกับผลิตภัณฑ์นี้

เดอะ Spot Zero ZTC II is the built-in water purifier that the spot-free idea was built around. Fed from the dock or from the boat's own watermaker, it runs the water through two full reverse-osmosis passes and delivers it at about 10 ppm total dissolved solids — water so clean it dries without leaving anything behind. The boat is rinsed and walked away from; the galley, showers and ice-maker run on bottled-quality water; and stainless, glass and dark gelcoat stop collecting mineral scale.

It is a purifier, not a softener. A softener swaps calcium and magnesium for sodium and the water still spots. The ZTC II removes the dissolved solids — Spot Zero quotes 95–99 % removal — and recovers up to 66 % of the feed water.

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Capacities, configurations and factory part numbers

Spot Zero positions the ZTC II as its "Dayboater" package: dock water or watermaker output in, pure water out, with Bluelink connectivity, the patented double pass (which eliminates pump cycling and TDS creep) and auto-sensing activation that detects flow from the dock or the watermaker.

ทางไฟฟ้า

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 and weights (Spot Zero drawings)

Spot Zero also publishes the configurations as a sheet and a workbook with the flow and wiring drawings (links below); we send the CAD with the quote.

Installation, plumbing and wiring

From Spot Zero's one-line flow drawing: the dock feed comes in through 3/4 in ID tubing to the pre-filter (Spot Zero P/N 252404301); the feed from pre-filtration, the feed from the desalinator, the membrane supply and return and the overboard line are 1/2 in OD; the membrane product and the product-to-tank lines are 3/8 in OD. The concentrate discharge runs to an open overboard in a free and unrestricted manner, and Spot Zero recommends a pressure-relief valve set at 8 psi in the feed-from-desalinator line. The ship supplies the dock-water inlet and the run from the bacteriostatic remineraliser (Spot Zero P/N 252404141) to the fresh-water tank. The control board runs the backpressure regulator, product, concentrate and inlet-source valves and reads product TDS, pump and concentrate pressure, product, recycle and concentrate flow and a tank-level sensor; the touch panel and optional remote touch panel are on 24 V DC, and an NMEA 2000 bus connection is provided. A link to an XTC II watermaker is wired on the same board.

Standard and optional equipment

Standard: control unit, membrane vessel(s), commercial pre-filter 4.5 × 20 in with clear housing, bacteriostatic remineraliser and pH neutraliser 2.5 × 10 in, 7-inch touchscreen.
Optional: remote-mount 7-inch touchscreen (P/N 252404181), short pre-filter (twin 4.5 × 10 in, no upcharge if specified at order), short membrane vessel, wall-mount bracket.

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

• Stage 1 + 2 Doublestack Pre-Filter / Oxidizer & Sediment Remover (FI-FW0005) — the standard commercial pre-filter cartridge (Spot Zero P/N 252404301)
• Spot Zero Stage 1 Pre-Filter / Oxidizer & Heavy Metal Remover (FI-FW0009) and Stage 2 Pre-Filter / Sediment Remover (FI-FW0016) — the two-stage alternative
• Spot Zero Pre-Filter (FI-FW0013) — Gen III pre-filter

Membranes and seals

• Spot Zero 4041 Membrane (MM-FW0010) — the 4 × 40 in membrane for the long vessel
• Spot Zero Short Membrane 4021 (MM-FW0007) — the 4 × 21 in membrane for the short vessel
• O-ring Seal Kit (4041) Membrane (MM-FW0025) — O-ring seal kit, 4041 membrane
• Spot Zero Membrane Chemical Cleaner (MM-FW0034) — membrane chemical cleaner

Product side

• Bacteriostatic Re-mineralizer (FI-FW0017) — bacteriostatic remineraliser (Spot Zero P/N 252404141)
• Remineralizer Cartridge - Gen III (FI-FW0028) — remineraliser cartridge, Gen III

Storage and controls

• Preventative & Storage Solution (MM-SF0000) — membrane storage solution (Spot Zero P/N 252404263)
• PGDX ZTCII Remote Touchscreen Display (EL-DS0006) — ZTC II remote touchscreen

Membrane care, storage and recommissioning (from Spot Zero's guide)

Fresh-water membranes sit in vessels closed with retaining plates (two M6 × 1.0 × 10 bolts, 5 mm Allen key) and are changed from the inlet end; the brine seal goes in last and is lubricated with a food-grade compound (Spot Zero recommends Molykote 111). Seawater membranes on the XTC II / XZ II side use 3/8 in quick-connect fittings on the end caps and three end-cap O-rings, which are replaced at every membrane change. New membranes ship in preservative and are flushed for at least 30 minutes with the product and concentrate discarded before the water is used.

If the boat is laid up, Spot Zero asks for the system to be run and flushed for five minutes once a month; if that is not possible, the membranes are preserved with Spot Zero's membrane storage chemical (one bottle per 5 US gallons / 18.9 L of purifier water, circulated with a chemical pump at no more than 30 psi and below 44 °C, renewed every three months). Recommissioning is a new pre-filter and a 30-minute flush to waste. The full procedure, with the freezing-climate version using propylene glycol, is in the membrane guide linked below.

Manufacturer documents

Spot Zero publishes the drawings and manuals openly; these are the current versions we work from:

• ZTC II configuration sheet (dimensions, part numbers) (PDF)
• ZTC II workbook (configurations, one-line flow drawing, wiring diagram) (PDF)
• ZTC II sales sheet (2025) (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$14,000 for the ZTC II. The equipment price depends on capacity and configuration, so we quote per boat; freight to Thailand is at cost and invoiced separately.

Next generation

Spot Zero is introducing a next-generation purifier range with Bluelink connectivity, a 33 % smaller footprint, 95 % fewer plumbing connections and 65 % quieter running, including three-phase Super Yacht models up to 6,000 GPD. It is listed as coming soon; the ZTC II is the current model and is available now. See Spot Zero Water Purifier — next generation.

การรับประกัน

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 หรือ อีเมล.