Automatic Backwash Strainer for UF/RO System

• Customization: Available
• Type: Water Filter
• Usage: Environmental Protection
• Style: Vertical
• Performance: Efficient Filtration
• Certification: CE, RoHS
• Pipe: Carbon Steel/Stainless Steel/HDPE
• Working Pressure(Max.): 8 Bar
• Working Pressure(Min.): 2 Bar
• Filtration Modules: 3 Inch
• pH Valve: 4-13
• Filtration Precision: 50/100/130/200/400 Micron
• Power: 220V/110V
• Control Way: Differential Pressure/Time/Manual
• Pressure Loss: 0.2-0.5 Bar
• Application: Irrigation/Industrial
• Transport Package: Wooden Case
• Trademark: CDFS
• Origin: China
• HS Code: 8421219990
• Production Capacity: 2600 Sets Per Year

Product Description

Working principle

  Automatic disc filter system with disc filtering element(as below) with 2"/ 3" /4" backwash valves,air valve,manifolds,controller. 

Easy to install. Automation available in 220V.



Filter materials
 

Items	Materials
Disc filter modules	Nylon
Pipeline	Carbon steel/HDPE /Stainless steel
Pressure gage	Stainless steel
Auto backwash valve	Nylon/stainless steel
Electromagnetic valve	Brass/nylon
Air valve	Plastic
Controller cover	Plastic/Stainless steel

Design and selection of models

1.Water quality classification

A.: Water of good quality: city tap water, well water from stable aquifer.

B.: Water of general quality: cooled circulating water, surface water treated by sedimentation, and drained water treated by effective deposition and completely biological treatment.

C.: Water of relatively poor quality: groundwater from aquifer of poor quality, drained water treated by effective deposition but with poor biological treatment, and surface water with enormous microbes.

D. The worst quality: well water with rich iron and manganese elements, surface water affected by flooding and without sedimentation, and drained water without precipitation and biological treatment.

Different water qualities have different influences on the filter's operation period, so in general it is better to keep the system's backwash intervals no less than 1 hour.
 

Raw water quality	Good water quality			General water quality			Poor water quality			The worst quality
Filtration range	200	100μ	50μ	200μ	100μ	50μ	200μ	100μ	50μ	200μ	100μ	50μ
Models	Flow(m3/h)			Flow(m3/h)			Flow(m3/h)			Flow(m3/h)
DLLF-4-3	224	176	128	168	129	102	120	88	70	72	55	40
DLLF-4-4	280	210	160	210	154	128	150	105	88	90	65	51
DLLF-4-5	374	294	214	281	216	171	200	147	118	120	91	68
DLLF-4-6	448	352	256	336	258	205	240	176	141	144	109	81
DLLF-4-7	522	410	298	392	301	238	280	205	164	168	127	94
DLLF-4-8	597	469	341	448	344	273	320	234	188	192	146	108

4 inch disc filter system demensions 

Model	Water in/out (mm / inch)	H(mm)	H1(mm)	H2(mm)	D(mm)	L(mm)
DLLF-4-3-A	150 / 6	1416.5	282.5	594	1200	1195
DLLF-4-4-A	200 / 8	1531.5	310	651.5	1200	1470
DLLF-4-5-A	200 / 8	1531.5	310	651.5	1200	1745
DLLF-4-6-A	250 / 10	1630.5	332.5	701	1200	2020
DLLF-4-7-A	250 / 10	1630.5	332.5	701	1200

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