Honeywell FN74C, F74C Product specification sheet

EN0H-1148GE23 R1009 • Subject to change without notice

F74C/FN74C

Reverse rinsing fine filter

Product specification sheet

F74C	FN74C
Construction

The fine filter comprises:

•Housing with pressure gauge

•Threaded connections

•Rotatable connector piece (F74C only)

•Fine filter in clear filter bowl

•Ball valve with drain connection

•Double wring wrench

Materials

•High quality synthetic material housing

•Brass threaded connections

•Red bronze connector piece (F74C only)

•Stainless steel fine filter

•Shock-resistant, clear transparent synthetic material filter bowl

•NBR seals

Application

F74C/FN74C reverse rinsing filters ensure a continuous supply of filtered water. The fine filter prevents the ingress of foreign bodies, for example rust particles, strands of hemp and grains of sand.

F74C/FN74C fine filters are used in systems where an existing pressure reducing valve is fitted or where one is not required. Both horizontal and vertical installation is possible.

Special Features

•DIN/DVGW approved

•Filtered water supplied even during reverse rinsing

•Patented reverse rinsing system - fast and thorough cleaning of the filter with small amount of water

•Memory ring indicates when next manual reverse rinsing is due

•Automatic reverse rinsing actuator with bayonet connector can be retrofitted

•Large filter surface

•Shock resistant clear synthetic material filter bowl enables easy checking of filter contamination

•Filter and complete filter bowl are replaceable

•Very simple operation

•Standardised discharge connection

•Meets KTW recommendations for potable water

Range of Application

Medium

Water

The filter is constructed for drinking water installations. In case of a process water application the filter has to be proven individually.

Technical Data
Installation position	Vertical or horizontal,
	with filter bowl downwards
Operating pressure	Minimum 1.5 bar
	Maximum 16.0 bar
Operating temperature	Maximum 30 °C
Connection size	3/4", 1", 11/4"

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F74C/FN74C Reverse rinsing fine filter

Connection size DA74C																																							R			3/4"			1"	11/4"
Weight																													approx. kg													2.7			3.2	3.6
Dimensions																																		mm
																																							H			324			324	324
																																							h			285			285	285
																																							T			150			150	150
																																							t			66			66	66
																																							r			27			27	31
																																							D			105			105	105
																																								I		90			100	105
																																							L			162			184	203
Flow value at ∆p = 0.2 bar																													m3/h													3.5			4.0	4.5
kvs-value																																										5.5			6.0	6.5
DIN/DVGW Approval No.																																										NW-9301 BO 0224

Z11S

DA74C

VST06-A

VST06-B

RV277

ZA76C

Method of Operation

The filter insert comprises an upper part and a lower combination section. When in the „filtering“ position, the small upper filter is closed so that the water can only pass through the main filter from outside to inside. When the ball valve is opened for reverse rinsing, the filter is pushed downwards until the water supply to the outer side of the main filter is stopped. Simultaneously, the water flow is opened to the upper part of the filter. The water needed for cleaning the filter passes through the upper sieve, the rotating impeller and the main filter from inside to outside. By this means, the filter is fully cleaned over its whole surface area at the full inlet pressure. The filter automatically switches over to the operating position when the ball valve is closed again.

Options

F74C-...AA = Filter mesh size 100 m, incl. rotatable connector piece DA74C with threaded male connections

F74C-...AC = Filter mesh size 50 m, incl. rotatable connector piece DA74C with threaded male connections

F74C-...AD = Filter mesh size 200 m, incl. rotatable

connector piece DA74C with threaded male connections

Connection size

FN74C-1A = Filter mesh size 100 m; rotatable connector piece DA74C has to be ordered separately - see accessories

FN74C-1C = Filter mesh size 50 m; rotatable connector piece DA74C has to be ordered separately - see accessories

Accessories

Z11S Automatic reverse rinsing actuator

For automatic filter cleaning at presettable intervals

DA74C Rotatable connector piece

For connection of retrofit filters and filter combinations

VST06-B Connection set

Solder connections

VST06-A Connection set

Threaded connections

RV277 Inlet check valve

Available in sizes R1/2" - 2"

ZA76C Connector piece

For conversion of the fine filters with rotatable connector pieces (1 1/4" and 1 1/2") into retrofit filter combinations (Converts 63 mm hole centres to 45 mm hole centres)

EN0H-1148GE23 R1009 • Subject to change without notice

28 www.honeywell.com