• P.O Box 1067
    San Marcos, TX 78667 USA
  • 512.827.3701
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Multiple Cartridge Filter Housings – 4 & 5 Round Models

Filter Finder

4FOS & 5FOS

Four & Five Round Models

We supply a complete line of four and five round models for flow rates to 150 GPM (36 M3/HR). Options include, 304L or 316L stainless steel; band clamp or swing-bolt lid closures and 150 psi (10 bar) or 300 psi (20 bar) pressure ratings. Standard pipe fittings are 2″ NTP, with flange, BSP, grooved and sanitary connections available. Electro-polishing or passivation can be provided by special order. Protective poly-coat over stainless steel is standard finish.

Housing Features:
  • Designed for industrial and commercial filtration needs
  • Heavy-duty stainless steel construction for durabilty
  • 304L and 316L stainless steel available
  • Band clamp and swing-bolt closures for quick cartridge change-out
  • Pipe fittings readily accessible for easy installation
  • Knife edge seal at both cartridge ends to eliminate by-pass
  • Standard housings accept double-open-end cartridges
  • Adapters for cartridges with 222, 226 and fin ends available
  • Mounting tabs, legs & custom fittings available by special order
  • Electro-polishing available for increased resistance to corrosion
  • Adjustable top plate for more cartridge options
Specifications
Cartridge
configuration
4
round
4
round
4
round
4
round
5
round
5
round
Cartridge
lengths
9-3/4″
– 10″
19-1/2″
– 20″
29-1/4″
– 30″
39″
– 40″
29-1/4″
– 30″
39″
– 40″
Product
code, 304L w/clamp lid
4FOS1 4FOS2 4FOS3 4FOS4 5FOS3 5FOS4
Product
code, 304L w/swing-bolt
4FOS1-SB 4FOS2-SB 4FOS3-SB 4FOS4-SB 5FOS3-SB 5FOS4-SB
Product
code, 316L w/clamp lid
4FOS1-316 4FOS2-316 4FOS3-316 4FOS4-316 5FOS3-316 5FOS4-316
Product
code, 316L w/swing-bolt
4FOS1-SB-316 4FOS2-SB-316 4FOS3-SB-316 4FOS4-SB-316 5FOS3-SB-316 5FOS4-SB-316
Flow
rate, maximum GPM
25 50 75 100 100 150
Flow
rate, maximum LPM
94 189 284 378 378 568
Flow
rate, maximum M3/HR
5 12 17 24 24 34
Standard
cartridge length
10″ 20″ 30″ 40″ 30″ 40″
Number
of standard cartridges
4 4 4 4 5 5
Number
of 10″ cartridges (butt seal)
4 8 12 16 15 20
Standard
pipe size
2″
NPT
2″
NPT
2″
NPT
2″
NPT
2″
NPT
2″
NPT
Standard
drain size
1/2″
NPT
1/2″
NPT
1/2″
NPT
1/2″
NPT
1/2″
NPT
1/2″
NPT
Pressure
drop (vessel only, psi)
<1 <1 <1 <1 <1 <1
Standard
pressure rating (psi/bar)
150
/ 10
150
/ 10
150
/ 10
150
/ 10
150
/ 10
150
/ 10
Temperature
rating (max. F/C)º
300º/
149º
300º/
149º
300º/
149º
300º/
149º
300º/
149º
300º/
149º
Shipping
weight (lbs.)
25 31 38 45 38 45

4FOS & 5FOS Models

Dimensions
Model
A B C D
4FOS1 2″ NPT 19.5″ 7″ 3″ 10.5″
4FOS1
2″ flange
23″ 7″ 3″ 12.5″
4FOS2 2″ NPT 29.5″ 7″ 3″ 10.5″
4FOS2 2″ flange 33″ 7″ 3″ 12.5″
4FOS3 2″ NPT 39.5″ 7″ 3″ 10.5″
4FOS3 2″ flange 43″ 7″ 3″ 12.5″
4FOS4 2″ NPT 49.5″ 7″ 3″ 10.5″
4FOS4 2″ flange 53″ 7″ 3″ 12.5″
5FOS3 2″ NPT 39.5″ 7″ 3″ 10.5″
5FOS3 2″ flange
43″ 7″ 3″ 12.5″
5FOS4 2″ NPT 49.5″ 7″ 3″ 10.5″
5FOS4 2″ flange 53″ 7″ 3″ 12.5″

Options

Flange fittings with legs

Legs must be ordered when
flange fittings are specified.

Mounting tabs

(May be installed at site)

Electro-polishing

Sanitary fittings

Spare Parts:

Part
Number
Description
8017-B
Shell
gasket, Buna-N
8017-EPR
Shell
gasket, EPDM
8017-T
Shell
gasket, Teflon
8017-V
Shell
gasket, Viton
8005-S
Cover
clamp
8006
T-bolt
for lid clamp
8007
T-handle
for lid clamp
8002-S
Head cover,
304
8002-S-316
Head cover,
316
8050-S
V-post,
1 high, 316
8051-S
V-post,
2 high, 316
8052-S
V-post,
3 high, 316
8053-S
V-post,
4 high, 316
8011-S-316
1/2″ drain
plug, 316 (2 required)
2103-S-316
1/4″ vent
plug, 316
8019
Knob,
3/8″ (for 4 rounds) req. one
8020
Knob,
1/2″ (for 5 rounds) req. one
8019-W-S
Wing nut,
3/8″ s.s. for 4 rounds
8020-W-S
Wing nut,
1/2″ s.s. for 5 rounds
SA
Spring
assembly, 222, 226
8110-4-S
Hold down
plate, 4 round, DOE, 316
Part
Number
Description
TABS Mounting tabs
(can be installed at site)
ML
Mounting legs
(must order with flanges)
SD-1/2 1/2″ sanitary
drain, pair
SV-1/2 1/2″ sanitary
vent, each
SF-2-316 2″ sanitary fitting,
316 pair
GF-2-316 2″ grooved fitting,
316 pair
BSP-2-316 2″ BSP, 316 pair
FF-2-316
2″ flange fittings,
316 pair (must order legs)
FNPT-2 2″ female NPT
pipe fittings, pair
FF-1.5-316
1-1/2″ flange
fittings, 316 (must order legs)
222 ADP T 222 cartridge
adapters (one per cartridge)
226 ADPT 226 cartridge
adapters (one per cartridge)
SB-300-4/5
300 psi swing-bolt
filter housing model
EP-4/5
Electro-polishing,
4 & 5 round models
P-4/5
Passivation,
4&5 round
Part
Number
Description
8110-5-S
Hold
down plate, 5 round, DOE, 316
3014-S-12
center
rod 1X4 round
3014-S-22
center rod 2X4
round
3014-S-32
center rod 3X4
round
3014-S-42 center rod 4X4
round
3016-S-12 center rod 1X5
round
3016-S-22 center rod 2X5
round
3016-S-32 center rod 3X5
round
3016-S-42 center rod 4X5
round
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