A brand of watemaker with a strong trajectory and experience guarantees that we will find spare parts after several years of system life. If this brand has a very wide network of distributors all over the world you will be guaranteed to have technical service and warranty and spare parts wherever you go.
If we talk about technical aspects, we have to differentiate between an analogue system and an electronic system.
The analogue system carries less applied technology so it is 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 using CAT, General pump and Clark pumps. If the material is not suitable for working with seawater, after about 5 years, the pump will begin to present corrosion and pressure leaks. It should be taken into account that the membrane works at the 60 bars of pressure supplied by this pump.
It is advisable that membrane containers be of fiber 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 feeding pump supplies the system and that the internal elements of the pump are anticorrosive seals, such as ceramics and internal elements of resins, elastomers, Viton, brass, etc. An electronic board that reads the production salinity sensor, reads the high pressure pump overpressure, detects if the seawater supply pump works in vacuum, counts the operating hours of the system and indicates all these parameters of input on a display, stops the watermaker in case of risk or doesn’t derive saltwater to the freshwater tank, has a price. If in addition, these spare parts are from a manufacturer like Parker, Katadyn or Spectra- Katadyn, they give a guarantee that others do not give.
The Spectra-Katadyn brand provides all the necessary accessories, which you will strongly appreciate when installing. As shown in these photos, Spectra takes care of the details for a correct installation. They provide the stainless steel tightening rings, hoses, hose with quick wash plug, all the necessary fittings, the keys for changing filters, a portable digital salinometer and even a Teflon roll. As we can see the connection between the Clark pump and the membrane is made by a rigid high pressure tube in stainless steel instead of the frequent high pressure hoses that are more economical.