Multi-Purpose Non-Code Housing
Rated to 150 PSIG (10.3 bar)
- Head and shell constructed of 18 gauge stainless steel for years of dependable service
- Accepts six 10 in. (25.4 cm), 20 in. (50.8 cm), 30 in. (76.2 cm) or 40 in. (102 cm) cartridges for optimum choice for a given flow rate
- Swing bolt closure permits quick disassembly for easy cleaning and service
- Operating pPressure to 150 PSIG (10.3 BAR) @ 200 °F (93 °C) permits use in most non-code applications
- 304 or 316L stainless steel materials of construction
Maximum Operating Pressure
- 150 psig (10.3 bar) @ 200 °F (93 °C)
Construction
- FMO A
Head and Shell: 304 Stainless Steel
Vent and Drain Plugs: 304 Stainless Steel
Bottom Seat Plates: 316L Stainless Steel - FMO 316L
Head and Shell: 316L Stainless Steel
Vent and Drain Plugs: 316 Stainless Steel
Bottom Seat Plates: 316L Stainless Steel
Connections:
- Inlet/Outlet: 2" NPT
- Vent: 1/4" NPT (cover)
- Drain: 1/2" NPT (upstream side)
Shell O-rings
- Ethylene Propylene (standard), Buna N, Viton1A
Eye Nut Option
- Eye nuts for swing bolt closure are available
- Standard unit supplied with hex nuts
- All closure bolting is zinc plated steel unless stainless steel is specified
Connection Option
- 150 lb. ANSI raised face slip-on flanges
Internal Components
316 stainless steel top seat plate assemblies and tube guides, and spacers are standard with internal parts option. ACCU-SEAL™ and UNI-SEAL™ sealing mechanisms are optional.Model | Liquid2 Flow Rate (gpm) | Dimensions (inches) | Maximum Cartridge Diameter (inches) | Weight (pounds) | Head Clearance3 Required For Cartridge Removal (inches) | ||||
A | B | C | D | E | |||||
6FMO1A-2-IP | to 30 (114 lpm) | 24 (61 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 42 (19 kg) | 30 (76.2 cm) |
12FMO2A-2-IP | to 60 (227 lpm) | 34 (86.4 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 45 (20 kg) | 50 (127 cm) |
18FMO3A-2-IP | to 90 (341 lpm) | 45 (114.3 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 48 (22 kg) | 71 (180.3 cm) |
24FMO4A-2-IP | to 120 (454 lpm) | 56 (142.2 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 51 (23 kg) | 91 (231.1 cm) |
6FMO1-316L-2-IP | to 30 (114 lpm) | 24 (61 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 42 (19 kg) | 30 (76.2 cm) |
12FMO2-316L-2-IP | to 60 (227 lpm) | 34 (86.4 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 45 (20 kg) | 50 (127 cm) |
18FMO3-316L-2-IP | to 90 (341 lpm) | 45 (114.3 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 48 (22 kg) | 71 (180.3 cm) |
24FMO4-316L-2-IP | to 120 (454 lpm) | 56 (142.2 cm) | 11 1/8 (28.3 cm) | 5 1/8 (13 cm) | 10 3/16 (25.9 cm) | 15 (38.1 cm) | 2 11/16 (6.8 cm) | 51 (23 kg) | 91 (231.1 cm) |
- Inlet and outlet connections assume normal flow
- For optional eye nuts to replace hex nuts, specify Part #T10640030 (3 required)

Housing Differential Pressure vs. Liquid Flow Rate

For liquids other than water, multiply differential pressure by specific gravity
1Registered trademark of Dupont Dow.
2Flow rate is dependent upon cartridge selection, fluid viscosity, and allowable pressure drop. See graph below for housing pressure drop at various flow rates. Refer to specific cartridge nomograph to determine initial pressure drop due to the filter cartridges. The 24FMO may be used to provide longer cartridge life and lower initial pressure drop. However, a flow rate in excess of 180 gpm (681 lpm) is not recommended with 2" (5.1 cm) connections.
3Ten-inch (25.4 cm) cartridges may be used instead of 20" (50.8 cm), 30" (76.2 cm), or 40" (102 cm) cartridges in 2, 3, or 4-deck housings, which will reduce this height. For 316 stainless steel spacers, specify part #T10583032.
Housings, Vessels, or Assemblies
This information is a guide to the part number structure and possible options. For availability of specific options and housing details, please contact Pall. Example Part Number: 6 FMO 2 -316L -2 F -IP (See bold references in tables below.) Part Number: < Equivalents Code from Table 1> FMO <Cartridge Length Code from Table 2> <Materials of Construction Code from Table 3> -<Connection Sizes Code from Table 4> <Connection Style Code from Table 5> -<Internal Parts Code from Table 6>
Table 1 10 in. Equivalents
Code | No. of 10" Equivalents |
6 | 6 |
12 | 12 |
18 | 18 |
24 | 24 |
Table 2 - 10 in. Cartridge Length
Code | Cartridge Lengths |
1 | 30 in. |
2 | 30 in. |
3 | 30 in. |
4 | 40 in. |
Table 3 - Materials of Construction
Code | Materials of Construction |
A | 304 Stainless Steel |
316L | 316L Stainless Steel |
Table 4 - Connection Sizes
Code | Inlet/Outlet Connection Sizes |
2 | 2" NPT (standard) |
Table 5 - Connection Styles
Code | Connection Styles |
Blank | NPT |
F | Flange |
Table 6 - Internal Parts
Code | Internal Parts4 |
Blank | No Internal Parts |
IP | Internal Parts |
4Standard vessels include internal parts of top seat plates and tube guides. Basic vessels without internal parts may be ordered as non-stock items.
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