Honeywell FN74C, F74C Product specification sheet
F74C
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
FN74C
F74C/FN74C
Reverse rinsing fine filter
Product specification sheet
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"
EN0H-1148GE23 R1009 • Subject to change without notice
www.honeywell.com 27
F74C/FN74C Reverse rinsing fine filter
Connection size DA74C R3/4"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
t666666
r272731
D 105 105 105
I 90 100 105
L 162 184 203
3
Flow value at ∆p=0.2bar m
-value 5.5 6.0 6.5
k
vs
DIN/DVGW Approval No. NW-9301 BO 0224
/h 3.5 4.0 4.5
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 µm, incl. rotatable
connector piece DA74C with threaded male
connections
F74C-...AC = Filter mesh size 50 µm, incl. rotatable connector
piece DA74C with threaded male connections
F74C-...AD = Filter mesh size 200 µm, incl. rotatable
connector piece DA74C with threaded male
connections
Connection size
FN74C-1A = Filter mesh size 100 µm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
FN74C-1C = Filter mesh size 50 µm; rotatable connector
piece DA74C has to be ordered separately - see
accessories
Z11S
VST06-A
RV277
28 www.honeywell.com
DA74C
VST06-B
ZA76C
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
1
Available in sizes R
/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
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