DIY Watermaker Kit | Build Your Own RO Desalinator

The LEDI DIY Watermaker Kit is a parts-only package for builders who want to assemble their own compact desalination system using quality components without sourcing everything separately. It includes the selected pump, membrane and hardware options, along with key fittings, valves, gauges, tubing and stainless components required for a typical LEDI-style build. A basic suggested build diagram is provided as a starting point, but this is not a plug-and-play system or step-by-step installation kit — final layout, assembly, testing, troubleshooting and safe operation are up to the builder. Best suited to capable DIY users, installers, makers and off-grid operators who are comfortable working with high-pressure plumbing, 12V/24V electrical systems and custom watermaker setups.

Features

The LEDI DIY Watermaker Kit gives capable builders a clean starting point for assembling a custom desalination system without chasing every fitting, valve and stainless component individually. It combines low-pressure feed parts, high-pressure stainless hardware, product-water monitoring, brine control, electrical connection components and selected pump/membrane options into one practical kit. The system is modular, serviceable and suited to marine, off-grid, expedition, emergency and custom install use, with variant options for pump type, membrane size and pressure relief protection. A basic suggested build diagram is included, but the kit is intentionally DIY. Final layout, assembly, wiring, plumbing, commissioning and safe operation are up to the builder.

What's included

What’s Included

Low Pressure / Feed Side

- Intake strainer
- 5m x 1/2" intake tube
- 2 x 10" pre-filter housings with joiner
- 20 micron pre-filter
- 5 micron pre-filter
- 2 x spare 20 micron filters
- 2 x spare 5 micron filters
- 4 x 1/2" push-fit connectors
- 2 x hose barb x push-fit stem fittings - 1/2" x 1/2" garden hose
- 2 x push-fit x BSP straight fittings - 1/2" x 1/2" thread
- 2 x female x push-fit fittings - 1/2" x 1/2"
- 1 x straight tube joiner reducer - 1/2" to 3/8"
- Optional / selected feed pump depending on variant

High Pressure Side

- Selected high-pressure pump option depending on variant
- Selected membrane and pressure vessel option depending on variant
- 316 stainless steel needle valve - 1/4" OD
- 316 stainless steel female branch tee - 1/4" OD
- 316 stainless steel male connector - 1/4" OD x 1/4" NPT
- 316 stainless steel female connector - 1/4" OD x 1/4" NPT
- 316L stainless steel straight tubing - 1/4" OD, cut length
- 316L stainless steel pre-bent U-bend tubing - 1/4" OD
- 316 stainless steel hex plug
- Stainless steel high-pressure gauge
- Optional pressure relief valve depending on selected variant

Brine / Waste Side

- 5m x 1/4" brine tube
- 1 x check valve / non-return valve - 1/4" x 1/4"
- 1 x 3-way ball valve - 304 stainless steel
- 1/4" push-fit and BSP fittings as required for brine plumbing

Fresh Water / Product Water Side

- 5m x 1/4" potable tube
- Inline TDS sensor - single channel
- Watermaker flow meter - 4-40 LPH
- 3 x female x push-fit fittings - 1/4" x 1/4"
- 4 x push-fit x BSP straight fittings - 1/4" x 1/4" thread

Electrical / Control Components

- Battery disconnect switch - 50A
- Anderson-style plug pair
- Inline fuse holder
- Electrical hardware suited to the selected 12V or 24V configuration

Maintenance / Setup

- Preservative chemical
- Basic suggested build diagram
- Installation hardware kit components depending on selected configuration

Important Note

- This is a DIY parts kit, not a finished watermaker
- It includes the core components and a basic suggested build diagram
- Final assembly, layout, mounting, wiring, plumbing, pressure testing, flushing, troubleshooting and safe operation are the responsibility of the builder

DIY -Build your Own Watermaker. Everything you need.

Reviews

Country/Region

Country/Region

DIY -Build your Own Watermaker. Everything you need.

Reviews