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Home > Filtration
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Basket Inlet Down Spout
We supply a variety of filtration devices to accommodate the needs of your rainwater harvesting system.  Downspout filters prevent large debris from entering your tank, as well as reducing the introduction of smaller particles.  An in-tank filter serves the same purpose, but resides in the tank entry-way. A calmed inlet prevents incoming water from stirring up fine sediment on the tank's bottom.  Intake filters ensure that particles aren't drawn into water being pumped from your tank.  Overflow siphons reduce the amount of fine particulate in a tank, using a skimming effect to eject floating contaminates like pollen along with extra water.
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Cistern Filter cleans water before it flows into the rain collection tank. Suited for small to mid-sized rainwater systems. Can be used in combination with the Duo Overflow Siphon.
Cistern Filter by 3P Technic
Our Price: $385.00

3P Technik Zisternen Filter


This filter is ideally suited for small to mid size systems where filter installation inside the storage tank is desired. This filter works well in combination with the Duo Overflow Siphon as the overflow device. Incoming water is continuously filtered through a two stage cleaning system.  The first stage removes larger debris such as leaves and other organic matter, which protects the finer second stage from clogging. Finer particles are removed in the second stage the clean water flows into the storage tank through the calmed inlet.  A small amount of water carries the dirt for discharge.

The two-stage filter is easily removed for cleaning or can be automatically cleaned with the installation of a back-washing device.  The filter housing is made of high quality PE plastic, with a two stage filter material made from stainless steel. The height difference between the filter inlet and outlet is just 117 mm.

The 3P Zisternen Filter is ideally suited for use in conjunction with a 3P Overflow Siphon Duo and the 3P Calmed Inlet.
3p technic basket filter
Basket Filter by 3P Technik
Our Price: $425.00

3P Technik Garden Filter


This basket filter is constructed with a basket that has  a frame and mesh made of strong, durable plastic. This basket rests in a plastic filter body. Water flows in through a top port, down through the basket, and filters water of leaves and other debris the filter discharging the water through a bottom port. This basket filter will recover 100% of the water that passes through it. A second port at the top provides an overflow if the basket gets to full. The basket is easily accessed through a removable lid connected to by telescopic extension that allows an adjustable burial depth. The lid can also be used on the filter without the extension.
3P Rainus Downspout Filter
3P Rainus Downspout Filter
Our Price: $182.00

3P Technik 3P Rainus


The 3P Rainus employs a simple-yet-elegant design to provide excellent low-maintenance downspout rainwater filtration.  This unobtrusive above-ground unit first slows rainwater  then spreads it out  to run across 2 filters . The first filter  removes coarse debris, while the second screens out finer particulate. Waste is shucked away from the stream of water and ejected through a vent . The vent is a generous size and not prone to clogging, but is easy to access and clear if the need should arise. The clean rainwater exits the bottom of the unit .
Strainer Basket For 16
Strainer Basket For 16" Fill-opening
Our Price: $41.00

Strainer Basket (16")


Strainer Basket For 16" Fill-opening. Works with all of our above ground tanks.
Mini Basket Filter
Mini Basket Filter
Our Price: $30.00

Mini Basket Filter


Simple basket filter connects 4” downspout to 16” Norwesco lid. Easy to install, easy to clean.
Floating Inlet Filter
Floating Inlet Filter with Flexible Suction Hose
Our Price: $175.00

Floating Inlet Filter with Flexible Suction Hose


The floating inlet filter draws water from cleanest zone in tank. The High-quality, flexible hose is food grade and specially formulated to resist biological activity. A ball float, filled with air, suspends the intake. This is a self sinking hose that allows filter and check valve to hang properly. The filter has a built-in check Valve and a stainless steel mesh screen. Made of lead-free brass. The hose is 1” diameter and 6’ long.
Standard Overflow Siphon
Overflow Siphon by Graf
Our Price: $88.00

Graf Overflow Siphon


Since particulate contaminants such as pollen tend to float to the water's surface, removing the floating layer of surface pollutants through regular overflow from the tank is conducive to maintaining high-quality water and a clean tank environment. This in-line design overflow siphon creates a skimmer effect at the max tank level to remove surface particulate, ejecting it with the tank overflow.
Graf Optimax Filter item# 340079
Graf Optimax Self-Cleaning In-Ground Filter
Our Price: $530.00

Graf Optimax-Filter®


An in-ground filter for rain harvesting.
Duo Overflow Siphon
Duo Overflow Siphon
Our Price: $180.00

3P Technik Overflow Siphon Duo


Since particulate contaminants such as pollen tend to float to the water's surface, removing the floating layer of surface pollutants through regular overflow from the tank is conducive to maintaining high-quality water and a clean tank environment. The Duo uses bilateral suction to removes particles floating on the water's surface once a maximum level is reached in the tank.
Calmed Inlet
Calmed Inlet by 3P Technik
Our Price: $63.00

3P Technik Calmed Inlet


Water enters the storage tank through the 'calmed inlet'. The inlet prevents the disturbance and re-suspension of fine sediments that gather on the bottom of the tank. Another important function of the inlet is the introduction of oxygen into the lower layers of the tank which maintains a fresh supply of water while preventing anaerobic conditions from forming.