Our recommendations
Cornat handle pump accessories rib filter, slot width 0.3 mm, 1 1/4 "x 100 cm / garden irrigation / PZB0354100
25.53 EURTo the product
| Type | PVC filter pipe |
|---|---|
| material | Plastic, brass |
| Ribbed | Yes |
| Slot width | 0.3 mm |
| diameter | 1 1/4 in |
| Wall thickness | k. A. |
| length | 100 cm |
The Cornat ribbed filter particularly impresses with its excellent price-performance ratio. According to the reviews on Amazon, the Well filter great popularity. The ribbed surface is one of the qualitative advantages. Other important dimensions are the slot width of 0.3 millimeters and the diameter of 1 ¼ inches. The length of the plastic and brass filter tube is one meter. According to the manufacturer, it is advisable to pre-drill the earth before driving in the well filter and to mount a hammer head on the robust ribbed filter.
Agora-Tec 4 inch DN 100 well pipe - set (10 meters) with 8 meter solid wall pipe, end cap and 2 meter filter pipe with one (slot width: 0.75mm)
244.95 EURTo the product
| Type | PVC filter pipe |
|---|---|
| material | plastic |
| Ribbed | Yes |
| Slot width | 0.75 mm |
| diameter | 4 inches |
| Wall thickness | 5 mm |
| length | 200 cm (2 × 100 cm) |
The well pipe set from Agora-Tec (R) consists of eight solid wall pipes and two filter pipes as well as a bottom cap. Important: We have only considered the filter tubes for the features in the table. All in all, the assembly of all components results in a filter length of ten meters. The filter tubes are again ribbed and have a slot width of 0.75 millimeters and a wall thickness of five millimeters - with a diameter of four inches. The set is extremely popular with reviewers on amazon.de. It should be of high quality and easy to work with.
2 inch plastic filter PVC ribbed for a pipe well _- = -_ Also in the range are various. Well construction kit Well pipes Well filter Auger handle pump So everything for well construction
39.69 EURTo the product
| Type | PVC filter pipe |
|---|---|
| material | plastic |
| Ribbed | Yes |
| Slot width | 0.3 mm |
| diameter | 1 1/4 in |
| Wall thickness | k. A. |
| length | k. A. |
The Brunnenandi brand filter tube has similar properties to the Cornat version. It is made of plastic and galvanized with malleable cast iron, which additionally increases the stability. In addition, the well filter reveals a ribbed surface - just like the other models in our comparison. The fact that we have "only" placed this filter tube in third place despite the best reviews on amazon.de is mainly due to that there is only sparse information available on the properties and the costs are higher than ours Comparison winner.
Purchase criteria
Filter type
PVC filter tubes: The classic PVC-U filters are suitable for so-called loose rock layers such as gravel and coarse sand. They are used most frequently and cost significantly less than fine filter tubes.
Fine filter tubes: If, for whatever reason, you are dealing with problematic soil conditions - i.e. alluvial or fine sand - you need fine filter tubes. Bag filters, fine sand filters and gravel filters belong to this category. Fabric filters act as the cheapest solution; Specific fine sand filters with a PVC pipe outer wall and HDPE jacket are more stable and resistant, which is reflected in a higher price. There are hardly any gravel filters left. In principle, they are normal slot filter tubes, but covered with a thick layer of filter gravel, which increases the filter effect.
Ram filter: For a ramming well you need a ramming filter, which forms the tip of the drive-in pipes. It is available with an inside or outside braid. You can ram a ram filter with internal weave directly into the ground; on the other hand, when using a ram filter with an external press, you should first open the well hole up to Pre-drill the groundwater layer before driving the pile filter and its extension pipes into the ground.
material
Most well filters are made of PVC-U. This synthetic material has all the essential characteristics that are important for a fully functional and long-lasting well. It is weather and corrosion resistant and also pleasantly light. In general, PVC-U is characterized by excellent chemical and physical properties. Make sure to choose plasticizer-free material so as not to harm any living being in the ground. There are also well filters made of steel. However, these are often more difficult to install because they are less flexible.
Ribbed vs. smooth surface
As a rule, ribbed filters are preferred. Compared to smooth filters, they have a larger filter surface. In addition, the small stones around the filter are not directly in front of the filter slots.
Slot width
Which slot width is the right one depends on the nature of the soil. Basically, the finer the gravel in the water-bearing layer, the finer the slot width of the well filter should be. Depending on the diameter of the well filter pipe, the dimension starts at 0.2 to 0.3 millimeters and goes up to 2.0 millimeters and larger.
Examples of suitable slot widths: For example, if you have a relatively loose sand-gravel mixture, you can use conventional PVC filter pipes with a slot width of 0.5 millimeters; with slightly finer sand, the slots should only be 0.3 millimeters wide. In the case of even more delicate fine sand, fine filter tubes with a slot width of 0.2 millimeters are required.
Filter section
The filter path results from the number, length and diameter of the filter tubes. It has to be adapted to the soil conditions as well as the slot width. In addition, the maximum delivery rate of the used applies Well pump to be included in the selection of the filter section.
diameter
In terms of pipe diameter, it is advisable to prefer DN 100 or 115 size filter pipes. These offer a high level of compatibility with various deep well pumps. Basically, you always have to make sure that the diameter of the filter tubes harmonizes with that of the pump and other connections. Take into account both the internal thread (i.e. the inside diameter) and the external thread above the socket (i.e. the outside diameter).
Important: Also note the type of thread. A distinction is made between pipe threads, trapezoidal threads and C threads.
Wall thickness
In principle, the following applies: the higher the wall thickness, the more stable the respective well pipes are. And: the deeper the well filter is to be installed, the more robust it has to be. For the most Garden fountain Filter pipes with a wall thickness of three to four millimeters are completely sufficient. Depending on the pipe diameter and individual requirements, wall thicknesses of up to around 24 millimeters are possible.
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frequently asked Questions
What are well filters and what are they used for?
Well filters are filter tubes. They serve to filter the water and therefore to clean it before it comes to the surface. The water from the water-bearing layer enters the through the filter tubes Fountain. The pipes must withstand the chemical and mechanical loads in the ground.
What do you have to consider with regard to the filter tube length?
Make absolutely sure that the area of the water-bearing layer that the Water extraction has the task of being penetrated by the filter tubes. The upper edge of the filter pipes must remain one to three meters below the lowered water level. Otherwise there is a great risk that air will be drawn from the well into the water level fluctuation area of the lowering funnel. This would lead to incrustation and clogging both on the filter tube and in the water-bearing layer.
How do I prevent sand from entering the well filter?
In order to specifically prevent sand from getting into it, you should close the well filter from below either with a bottom cap or - in the case of immediate sinking - with clay pellets.
Which manufacturers produce high quality well filters?
The companies are among the most renowned manufacturers of well filters Earth auger and Lotze.
Where is the best place to buy well filters?
Well filters are available in all well-stocked hardware stores and often also in specialist garden centers. You will also find what you are looking for in special shops for fountain accessories. You also have a good selection on Amazon. There you also benefit from a very simple and uncomplicated ordering process Possibility to return the filter tubes if they do not meet 100 percent of your requirements fulfill.