Speaking of Hans Hill, we have to mention SYR, SYR is a well-known water treatment equipment brand in Europe, and it is also one of the companies with the most complete specifications of water treatment products.
SYR pipeline filtration products were introduced into the Chinese market by Dongli Technology (Shanghai) in 1998, registered the Chinese trademark "Hans Hill", and named the category "pre-filter", the concept and advertising of domestic pre-filter (such as the concept of backwashing) were originally from Hans Hill.
Today, Dongli has the right to use the brands of Hans Hill and SYR in China, and the design and production have long been localized (the filter element is still from the German SYR, so the official still advertises itself as a German brand), and at the same time, Dongli is also the agent of the German SYR, so it has both the original imported model of the German SYR, as well as the domestic model of independent production, there may be a slight difference between the domestic type and the imported type, and it is best to ask clearly before purchasing.
However, there are not many Hans Hill pre-filters, and the more popular one is the ECO model. Its filter screen adopts a multi-layer laminated design, which can filter more impurities than the traditional filter, but its flow rate is only 2.3 tons / hour, slightly lower than the mainstream products, and the 316 stainless steel filter with 40 micron accuracy is standard, and it also has a backwash function, and the price is about 800 yuan.
As for other models, EDO can be regarded as a shell version of ECO, but one is an internal thread, the other is an external thread, and there is not much difference between the two in other aspects, while DFR has more siphon backwash function than ECO, and also supports universal installation, but the price is close to two thousand, and the cost performance is not high.
In addition, FRR can also be considered, although the plastic appearance looks a bit cheap, but its performance is quite excellent: the flow rate reaches 3.6 tons / hour, the filtration accuracy is 40 microns, the same laminated filtration, supports siphon backwashing, and is also equipped with a striking red backwash reminder sign, when the red button is prominent, it is to remind the user that it needs to be cleaned, which is quite intimate, and the price is about 1,000 yuan.
