AUTOMATIC VALVELESS GRAVITY FILTER

	ISO 9001:2000 Certified Company

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AUTOMATIC VALVELESS GRAVITY FILTER - FEATURES AND ADVANTAGES

HANDLES INLET SUSPENDED SOLIDS LOAD UP TO 25/50PPM WHILE GIVING CONSISTENT HIGH QUALITY TREATED WATER OF LESS THAN 10µM.
COMPACT AND MODULAR DESIGN
LOW INSTALLATION COST FOR ADD ON FILTERS
NO VALVES, INSTRUMENTS ,BACKWASH PUMPS & BLOWER IS REQUIRED FOR OPERATION
RINSE WATER THROUGH A FRESHLY BACKWASHED AUTOMATIC VALVELESS GRAVITY FILTER IS NOT DISCARDED. BUT STORED AND USED FOR NEXT BACKWASH CYCLE, IT SAVES WATER.
NO POWER REQUIREMENT FOR OPERATION
OPERATION IS SIMPLE THAT FILTERS CAN BE “FIT AND FORGOT”
NO MANPOWER REQUIRED FOR OPERATING & MONITORING
STORES OWN RESERVOIR OF BACKWASH WATER HENCE NO WATER STORAGE IS REQUIRED FOR BACK WASH.
BACKWASH TIME 5-10MIN
IT CAN BE PLACED IN OPEN AIR
IDEAL FOR USE IN HAZARDOUS ZONE AREA
NO AIR REQUIRED FOR SCOURING PURPOSES AND THEREFORE BLOWER IS NOT NEEDED.
NO MOVING PARTS

Automatic Valueless Gravity Filter - Capacity Chart
Filter Capacity	Size of the filter		Inlet / Outlet pipe size	Space Required per filter (foot print)
m3/hr	Dia (Mt)	Height (Mt)	NB	Length (mm)	Breadth (mm)
8	1	4-5	65	2115	1250
18	1.5	4-5	80	2680	1755
31	2	4-5	100	3280	2250
45	2.5	4-5	150	3995	2755
70	3	4-5	150	4495	3250
96	3.5	4-5	200	5200	3750
125	4	4-5	200	5700	4250
160	4.5	4-5	250	6415	4750
200	5	4-5	250	6915	5250
237	5.5	4-5	300	7620	5750
282	6	4-5	350	8245	6255
332	6.5	4-5	350	8745	6755
385	7	4-5	406	9445	7250
442	7.5	4-5	406	9945	7755
500	8	4-5	508	10635	8250
567	8.5	4-5	508	11155	8750
636	9	4-5	600	11855	9255

Raw Water Inlet Valve: To Set the desired inlet flow to filter.
a) No need to every day operation.
b) Instead of Valve flow restricting Orifice can be used.
Head Tank: To maintain Head & Water (Pressure) to Filter.
a) Filter chamber is vented to Head Tank by a small pipe line.
b) Head Tank Vent line connected to Seal Box.
c) Head Tank outlet line to inlet of Seal Box.
Seal Box: To Provide water supply at a pressure to filter.
a) Vent Line – Water in excess of designed flow rate will be drained in vent line.
b) Outlet of Head Tank connected to Seal Box for providing water supply to filter.
c) Head Tank connected to the filter chamber for Raw water supply.
Filter Chamber Contains:
a) Filter media supported on nozzle plate fitted with Strainers.
b) Free Board to accommodate bed expansion during back wash.
c) Filter chamber vented to Head Tank.
Back wash Storage Chamber: Filtered/Rinse water is stored in Chamber for back wash.
Back Wash Regulator: – Maintains minimum water level in chamber – wash water line outlet terminated wall below minimum water level in Regulator.