Basic Info
Model No.: QLQ
Product Description
Dual Media Filter Pictures

Big-flow auto Small-flow auto Small-flow auto big-flow manual small-flow manual
How does the Dual Media Filter works Raw water passes inside water distributor into filter media layer (quartz sand), which let impurities stay at sand layer. Clean water flow out stably from water collector. When the pressure drop reaches the given value, the cleaning cycle is started. The rinse control start working at pressure drop value at 0.05-0.15MPa, return to 0.02-0.04MPa after back flushing. Quartz sand inside tank mixed with coarse and fine sands. They are allocated above water distributor averagely. Even in back flushing, water consumption is little.
Tank inside has rubber line and plastic line for option. It is for anti-corrosion, which ensure a tank can be used 10-20years.
The completed filter control system has finished already in factory.
Where to use Dual Media Filter Swimming pool, hotel spa, water entertainment, aquarium, fish farm Irrigation in agriculture
Drinking water pre-treatment
Industrial recycled water, central air-condition system
Dual Media Filter Parameter
Single Flow Rate | 6-300m3/H |
Design Pressure | 7.5-16 bar |
Water inlet pressure | 2.5-3 bar |
The Range of Working Temperature | 20-120.C (68-248.F) |
Seal Type | O-ring and Washer |
Filter Precision | 20-100microns |
Connect Method | Flange |
Surface Treatment | Matt Spray Beads, Mirror Polishing, Electropolishing |
Control Method | Differential pressure switch, pneumatic butterfly valve, PLC |
Filter sand type | Quartz sand, manganese sand, activated carbon, Anthracite, fiber ball, resin |
Filter medium supply | We can supply different kind filter medium and combination |
Equipment Chamber Material | Carbon steel 304ss or 316L |
The key of filter effect | water distribution and catchment technology |
We have models for choose
Dual Media Filter with water enters from top

Item | Model | Φmm | Height mm | Connect size mm | Filter area | Flow rate T/H |
1 | QLQ500×700 | 520 | 816 | 40 | 0.2 | 6-10 |
2 | QLQ600×766 | 620 | 874 | 40 | 0.28 | 8-14 |
3 | QLQ700×819 | 720 | 899 | 40 | 0.38 | 12-19 |
4 | QLQ800×872 | 820 | 957 | 50 | 0.5 | 15-25 |
5 | QLQ900×1024 | 920 | 1104 | 50 | 0.64 | 18-30 |
6 | QLQ1000×1079 | 1000 | 1164 | 50 | 0.79 | 23-39 |
7 | QLQ1100×1131 | 1100 | 1211 | 50 | 0.95 | 28-47 |
8 | QLQ1200×182 | 1200 | 1267 | 80 | 1.13 | 33-55 |
Dual Media Filter with water enters from side

Item | Model | Φmm | Height mm | Connect size mm | Filter area | Flow rate T/H |
1 | QLQ1400×1700 | 1400 | 1700 | 100 | 1.54 | 45-75 |
2 | QLQ1600×1800 | 1600 | 1800 | 150 | 2.01 | 60-100 |
3 | QLQ1800×1900 | 1800 | 1800 | 150 | 2.54 | 75-125 |
4 | QLQ2000×2000 | 2000 | 1900 | 150 | 3.14 | 95-155 |
5 | QLQ2000×2000 | 2200 | 2000 | 150 | 3.8 | 115-190 |
6 | QLQ2400×2100 | 2400 | 2100 | 150 | 4.52 | 130-210 |
7 | QLQ2600×2400 | 2600 | 2400 | 150 | 5.3 | 145-225 |
8 | QLQ2800×2500 | 2800 | 2500 | 200 | 6.15 | 155-240 |
9 | QLQ3000×2600 | 3000 | 2600 | 200 | 7 | 170-255 |
Clear drawing help you understand

Attentions in using1. When quartz sand filter first into use, users should clean sand firstly, after that to start filtration.
2. Turn all operating valves slowly, to avoid water impact.
3. Keep sharp or hard things away from filter.
4. Keep away from fire and high temperature.
5. Make sure sand is clean when not using.
Dual Media Filter How to install ?Before installing a quartz sand filter, please make sure the ground is strong and even. The space is big enough for connecting pipes, valves and repair. The filter needs changes sands after using some time. Follow below steps one by one:
1.Take down control valve
2.Pour sand into tank, by covering a protective cover at the inlet to avoid sand inside
After replacing new sand, return control valve, connect tightly. Remember there's a pressure gauge, but not fasten it tightly. Make sure each pipe connection is correct and no leak.
Dual Media Filter Inside look

Dual Media Filter mediaNatural quartz sand: contains SiO2, smooth and clean out appearance. Quartz sand from mine bed: irregular shape of sand, with strong hardness.
Sea sand: smooth and clean out appearance.
Dual Media Filter Othering fittings

FAQDo you have certificates? Yes , we have ISO / CE certificate and certificate of patent
Do you have design team?
We have a professional design team provide drawings, we wait for your confirmation and production
Can you guarantee delivery time ?
Timely transport, ensure the delivery time
Are you maufacturer ?
Yes, we are the professional Water Treatment equipment manufacturer in china Contact us if you need more details on Media Filter. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Stainless Steel Media Filter、High Speed Media Filter. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Filter Series > Irrigation water filter
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