Philiboy83
2013-10-09 11:27:13
- #1
Hi everyone,
has anyone ever dealt with the topic of cistern filters for home water usage systems?
There are manufacturers like Otto Graf / Garantia who have their own filters sold with their systems, such as the Optimax-Pro filter or the Supra internal filter, but also companies like 3P Filtertechnik that deal very intensively with the topic.
What I always find amazing is how many different cistern filters there are that all basically follow the same principle, look different, and all are recommended as the best with the highest possible water yields, and so on. But figuring out which one is more or less suitable for what is not easy, even the manufacturers themselves provide rather sparse information, as they naturally try to sell the highest-priced products.
Anyone who looks at 3P Filtertechnik, Otto Graf, Garantia, or rewa96 will see what I mean. Filter mesh sizes are specified from 0.30-0.60mm, 0.30x1.7mm, 0.5 or 0.8mm. There are surface filters made of stainless steel or plastic and cartridge filters.
What obviously points in a certain direction: Can I install a filter with or without slope? Some tanks do not offer the possibility for the cistern filter to have a slope or a large slope between inlet and outlet, for example with existing tanks or if the pipe slope otherwise wouldn’t work anymore.
Obviously, the more slope the better to flush off settled dirt on the screen filter surface as effectively as possible. Provided the filter surface provides enough filtering capacity, enough rainwater still flows into the cistern during heavy rain and doesn’t just run over the filter surface.
Fine or coarse filter surface? Clearly, if I only have leaves a large one is enough, if I have lots of fine dirt a finer screen, which in turn tends to clog more and thus leads to a sealed filter surface causing the rainwater to run over the filter.
In my opinion, an important topic: surface water drainage option. Most cistern filters have a siphon overflow in a closed system, meaning when the cistern is full, the water rises in the filter and flows through the siphon into the overflow. However, the fact that fine particles like pollen settle on the water surface (as is the case with me) is neglected; if the layer is somewhat closed and too thick, the water tips due to a lack of oxygen. Therefore, the removal of the top floating layer must take place when the tank is full, which the company 3P has developed very well, but anyone with a plastic tank like from Grad or similar will find that the space in the tank dome (62.5 cm) hardly offers any room for this.
Have you had experience with certain filters (no matter which)?
has anyone ever dealt with the topic of cistern filters for home water usage systems?
There are manufacturers like Otto Graf / Garantia who have their own filters sold with their systems, such as the Optimax-Pro filter or the Supra internal filter, but also companies like 3P Filtertechnik that deal very intensively with the topic.
What I always find amazing is how many different cistern filters there are that all basically follow the same principle, look different, and all are recommended as the best with the highest possible water yields, and so on. But figuring out which one is more or less suitable for what is not easy, even the manufacturers themselves provide rather sparse information, as they naturally try to sell the highest-priced products.
Anyone who looks at 3P Filtertechnik, Otto Graf, Garantia, or rewa96 will see what I mean. Filter mesh sizes are specified from 0.30-0.60mm, 0.30x1.7mm, 0.5 or 0.8mm. There are surface filters made of stainless steel or plastic and cartridge filters.
What obviously points in a certain direction: Can I install a filter with or without slope? Some tanks do not offer the possibility for the cistern filter to have a slope or a large slope between inlet and outlet, for example with existing tanks or if the pipe slope otherwise wouldn’t work anymore.
Obviously, the more slope the better to flush off settled dirt on the screen filter surface as effectively as possible. Provided the filter surface provides enough filtering capacity, enough rainwater still flows into the cistern during heavy rain and doesn’t just run over the filter surface.
Fine or coarse filter surface? Clearly, if I only have leaves a large one is enough, if I have lots of fine dirt a finer screen, which in turn tends to clog more and thus leads to a sealed filter surface causing the rainwater to run over the filter.
In my opinion, an important topic: surface water drainage option. Most cistern filters have a siphon overflow in a closed system, meaning when the cistern is full, the water rises in the filter and flows through the siphon into the overflow. However, the fact that fine particles like pollen settle on the water surface (as is the case with me) is neglected; if the layer is somewhat closed and too thick, the water tips due to a lack of oxygen. Therefore, the removal of the top floating layer must take place when the tank is full, which the company 3P has developed very well, but anyone with a plastic tank like from Grad or similar will find that the space in the tank dome (62.5 cm) hardly offers any room for this.
Have you had experience with certain filters (no matter which)?