DIFFERENCES BETWEEN BRANDS OF BOAT WATER WATER SYSTEMS
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A well-established water treatment brand with a strong track record and experience guarantees that we will find spare parts after several years of the system's life. If this brand has a very wide network of distributors around the world, there will be technical service, guarantees and spare parts wherever you travel.
If we talk about technical aspects, we must differentiate between an analog system and an electronic system.
The analogue system requires less technology and is therefore more economical. The high-pressure pump is the heart of the system, so a good pump guarantees continuous work and hours of operation. Dessal works with systems that use CAT, General Pump and Clark pumps. If the material is not suitable for working with sea water, after about 5 years, the pump will begin to corrode and leak pressure. It must be taken into account that the membrane works at the 60 bars of pressure that this pump supplies.
In an electronic system, there will be a board that will read the production salinity sensor, the overpressure of the high-pressure pump, detect whether the seawater feed pump is working in a vacuum, count the hours of operation of the system and indicate all these input parameters on a display or screen. In addition, it will stop the water treatment plant in case of risk or diversion of salt water to the freshwater tank. All this technology is more expensive than an analog model.
It is advisable that the membrane containers in both systems (analogue or electronic) be made of fibre to avoid corrosion. They must also be resistant to withstand up to 100 bars. It is also necessary to take into account what type of feed pump supplies the system and that the internal elements of the pump are anti-corrosive seals, such as ceramic ones and internal elements made of resins, elastomers, brass, etc.
The Spectra-Katadyn brand provides all the necessary accessories, which is appreciated when it comes to installation. As shown in these photos, Spectra takes great care of the details for a correct installation. It provides stainless steel clamping rings, hoses, a hose with a quick-connect wash connector, all the necessary fittings, keys for changing filters, a portable digital salinometer and even a roll of Teflon. As we can see, the connection between the Clark pump and the membrane is made by means of a rigid high-pressure stainless steel tube instead of the common high-pressure hoses that are cheaper.