4 inch disc filter

Automatic self-cleaning water filters: Single unit flow 19-2000m3/h Filtration precision 20-4000 micron

Type：Multi units Material：Carbon steel Cleaning：Backwashing Control：Automatic

Product advantages

> High flow rate/high filtration accuracy

> Low pressure loss/low backwash water consumption

> High automation level

Product principle

The water flows through the screen and the particles are retained on the inside of the screen of the filter element. The filtered water then flows out through the outlet.

When the particles accumulated to a certain number and the pressure differential increases to the pre-determined level, the flushing cycle starts.

It include two steps: First, the automatic drain valve opens on the drainage outlet. Then, electronic motor drives the cleaning brushes which are inside the screen, the solids are expelled through the drain valve.

Filters continue to supply filtered water even during the flushing cycle.The whole working system is controlled by a smart box which has several control modes: pressure differential, time, manual and PLC.

Flowrate	19-4000m3/h	Control way	Differentialpressure/time/manually/PLC
Filtration precision	20um-4000um	Cleaning way	Brush
Working pressure(max.)	1 .6MPa(Customized)	Cleaning time	10-200S(Adjustable)
Working pressure(min.)	0.1MPa	Perforate screen	800-4000um
Working temperature	<65'℃< /td>	Wedge screen	50-1000um
Power	380V150HZ	Sintered screen	20-800um

Product 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.

Two operating states: filter state and backwash state

Product principle

Working pressure	0.2-0.8MPa	Back washing pressure	0.18-0.8MPa
Working temperature	<60℃	PH value	4-13
Backwashing mode	Internal backwash/external backwash	The filtering module(A) number	2-10
Water in pipe(B)	carbon steel / stainless steel /Plastic	Water out pipe(C)	carbon steel / stainless steel / Plastic
Drainage pipe(D)	carbon steel / stainless steel /Plastic	Backwash valve(E)	steel / Plastic
Controller(F)	full-automatic and international standard IP65.

Selection of data table

Filtration unit	Precision （μm）	Back washing flow (m³/h)	Filtration flow(m³/h)
Filtration unit	Precision （μm）	Back washing flow (m³/h)	Good water quality	General water quality	Poor water quality	The worst quality
2 inch	20	8-11	9	7	5	3
	50		17	14	10	7
	100-130		24	20	18	12
	200-400		24	20	18	12
3 inch	120-130	16-22	32	30	24	14
3 inch	75-200	16-22	36	32	26	16
4 inch	20	40-55	18	14	10	6
	50		34	28	20	14
	100-130		64	59	47	28
	200-400		72	63	51	32

Model	Water in/out(mm)	H(mm)	H1(mm)	H2(mm)	D(mm)	L(mm)
DLLF-2-2-A	89	884.5	150	413	776.5	890
DLLF-2-3-A	108	904	160	432.5	796	1165
DLLF-2-4-A	108	904	160	432.5	796	1440
DLLF-2-5-A	159	944.5	175	473	854	1715
DLLF-3-2-A	108	1049	175	461	875	890
DLLF-3-3-A	159	1074.5	175	486.5	933	1165
DLLF-3-4-A	159	1092	192.5	504	933	1440
DLLF-3-5-A	159	1092	192.5	504	933	1715
DLLF-4-3-A	159	1416.5	282.5	594	1200	1195
DLLF-4-4-A	219	1531.5	310	651.5	1200	1470
DLLF-4-5-A	219	1531.5	310	651.5	1200	1745
DLLF-4-6-A	273	1630.5	332.5	701	1200	2020
DLLF-4-7-A	273	1630.5	332.5	701	1200	2295