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F74C REVERSE RINSING FILTER; MV876 AUTOMATIC-BACKWASH CONTROLS
L
l
r
Fig. 1. Dimension drawing of F74C.
Table 1. Dimensions of F74C in in. (mm).
Dimension
H
12-13/16 (324)
h
11-3/16 (285)
L
6-3/8 (162)
l
3-9/16 (90)
D
4-1/8 (105)
r
1-1/16 (27)
t
2-5/8 (66)
T
5-5/16 (150)
Weight:
3/4 in.: 6 lb (2.7 kg).
1 in.: 7 lb (3.2 kg).
Operating Pressure Drop Versus Flow:
See Fig. 2.
Maximum recommended: 3 psi to 7 psi
(with clean screen).
62-0165
D
T
Connection Size
3/4
1
12-13/16 (324)
11-3/16 (285)
7-1/4 (184)
3-15/16 (100)
4-1/8 (105)
1-1/16 (27)
2-5/8 (66)
5-5/16 (150)
80.0
70.0
60.0
50.0
40.0
30.0
h
20.0
H
10.0
0.0
MAXIMUM RECOMMENDED
PRESSURE DROP WITH
CLEAN SCREEN.
Fig. 2. F74C Pressure drop vs. flow.
Connections: Union on inlet and outlet: External NPT
M18087
threaded or sweat. Inlet/outlet assembly can be rotated
to fit on vertical or horizontal piping.
Screen Sizes: Shipped with Device: 100 microns.
MV876 Automatic-Backwash Control:
MV876B1018: Bayonet mounted shaft of 24 Vac motor
and timer replaces ball valve manual control for
automatic backwash at preprogrammed intervals.
24V transformer not included. For use with F74C and
F76S Filters only.
Specifications:
Power: 4 VA.
Current: 170 mA.
Voltage: 24 Vac.
Cycle time: 20 seconds (approximate).
Timer: Variable. See Table 3.
Accessories for F74C:
AF74-1A Replacement filter assembly for F74C, 3/4 in.
and 1 in., 100 micron; includes the filter insert
complete (O-ring, mesh with mesh support, impeller),
sump O-ring (mounted between the filter housing and
the sump).
KF74-1A Replacement sump assembly for the F74C;
includes the sump assembly complete (ball valve,
plastic air gap adaptor), sump O-ring (mounted
between the filter housing and the sump).
TBD Opaque sump cover for F74C 3/4 in. and 1 in.
U76S5015 3/4 in. sweat tailpiece.
U76S5023 1 in. sweat tailpiece.
U76T1014 3/4 in. NPT tailpiece.
U76T1022 1 in. NPT tailpiece.
901444 Union gasket for F74; 3/4 in., 10 gaskets in
package.
901445 Union gasket for F74; 1 in., 10 gaskets in
package.
ZR 10 K-34 Double ring wrench for removing filter bowl.
2
0
3
7
10
PRESSURE DROP (PSI)
F74C1015
F74C1023
20
M17656
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