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LMO Series Filter Housing product photo Primary L

LMO Series Filter Housing

  • Accepts 10.2 cm (4 in), 25.4 cm (10 in), 50.8 cm (20 in), or 76.2 cm (30 in) Double Open End Filter Cartridges1
  • Operating pressure to 12.1 bar (175 psig) @ 93°C (200°F) permits use in a wide range of applications
  • Cast iron and 316 stainless steel or all 316 stainless steel materials of construction
  • In-line inlet and outlet connections for easy installation 
  • Optional T-handle permits replacement of filter cartridge without tools 

1When fitting with 10.2 cm (4 in) DOE filters, please order filters under Code 550 to assure proper fit.
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  • Accepts 10.2 cm (4 in), 25.4 cm (10 in), 50.8 cm (20 in), or 76.2 cm (30 in) Double Open End Filter Cartridges1
  • Operating pressure to 12.1 bar (175 psig) @ 93°C (200°F) permits use in a wide range of applications
  • Cast iron and 316 stainless steel or all 316 stainless steel materials of construction
  • In-line inlet and outlet connections for easy installation 
  • Optional T-handle permits replacement of filter cartridge without tools 

1When fitting with 10.2 cm (4 in) DOE filters, please order filters under Code 550 to assure proper fit.

Maximum operating pressure

  • 7.2 bar (105 psig) @ 93°C (200°F)

    NOTE: Maximum operating pressure ratings are vessel ratings only. Safe operating temperature and pressure will depend on filter cartridge and gasket/O-ring used. For inquiries on compatibility, contact the factory or your Pall distributor.

    European Pressure Equipment Directive (PED) 2104/86/EU. ATEX Directive 2014/34/EY (Group II Category 2).

Construction

  Head2 Shell
LMO Cast iron3 316 stainless steel
LMOS Cast 316 stainless steel 316 stainless steel

Connections

  • Inlet/outlet: 3⁄8"4, 1⁄2", 3⁄4", or 1" NP
  • Drain:
    • LMO: Drain plug, 316 stainless steel, 1⁄4" NPT
    • LMOS: Drain plug, 316 stainless steel, 1⁄4" NPT

Shell O-rings

  • Ethylene propylene (standard), nitrile, FEP, fluorocarbon elastomer, neoprene, silicone elastomer

Cover Nut O-ring

  • FEP (standard)

Bracket Option

  • Stainless steel brackets are available as a standard option

T-Handle option

  • T-handle cover nuts are available in carbon steel or 316 stainless steel. Standard units are supplied with hex head cover nut

Flange option

  • 150 lb. ANSI raised face flanges are available for 1⁄2", 3⁄4" and 1" LMOS stainless units only

    NOTE: Non-compressible filters such as pleated, carbon, and membrane cartridges are not recommended for use with this housing. Pall’s LMO Spring Seal housings and LMO Vari-Seal™ housings are designed to accommodate non-compressible filter cartridges. For metallic filter cartridges use the LMO Vari-Seal housings only.

Dimensional Data (nominal)

Model Flow Rate5 lpm (gpm) Dimensions (in) Weight kg (lb)
A B C
LMO4 - 3⁄8 to 15.1 (4) 18.4 (7.25) 12.1 (4.75) - 1.3 (2.75)
LMO10 - 3⁄8 to 37.9 (10) 39.3 (13.5) 12.1 (4.75) - 2.7 (6)
LMO10 - 1⁄2 to 37.9 (10) 39.3 (13.5) 12.1 (4.75) - 2.8 (6.25)
LMO10 - 3⁄4 to 37.9 (10) 39.3 (13.5) 12.1 (4.75) - 2.8 (6.25)
LMO10 - 1 to 37.9 (10) 39.3 (13.5) 12.1 (4.75) - 3.1 (6.75)
LM020 - 3⁄4 to 75.7 (20) 59.4 (23.375) 12.1 (4.75) - 3.9 (8.5)
LMO20 - 1 to 75.7 (20) 59.4 (23.375) 12.1 (4.75) - 4.1 (9)
LMO4S - 1⁄2 to 15.1 (4) 18.4 (7.25) 12.1 (4.75) - 1.8 (4)
LMO10S - 1⁄2 to 37.9 (10) 34.3 (13.5) 12.1 (4.75) - 2.8 (6.25)
LMO10S - 3⁄4 to 37.9 (10) 34.3 (13.5) 12.1 (4.75) 22.5 (8.875) 2.8 (6.25)
LMO10S - 1 to 37.9 (10) 34.3 (13.5) 12.1 (4.75) 22.5 (8.875) 3.1 (6.75)
LMO20S - 3⁄4 to 75.7 (20) 59.7 (23.5) 12.1 (4.75) 22.5 (8.875) 3.9 (8.5)
LMO20S - 1 to 75.7 (20) 59.7 (23.5) 12.1 (4.75) 22.5 (8.875) 4.1 (9)
LMO30S - 3⁄4 to 113.6 (30) 85.1 (33.5) 12.1 (4.75) 22.5 (8.875) 4.5 (10)

2Housing head has mounting bosses which accept self-tapping screws
3Painted exterior
43⁄8" NPT only available on cast iron head
5Dependent upon cartridge selection, fluid viscosity and allowable pressure drop at various flow rates. Refer to cartridge nomograph to determine initial pressure drop of filter cartridge.

Housing Differential Pressure vs. Liquid Flow Rate



Unit Conversion: 1 bar = 100 kPa

For liquids other than water, multiply differential pressure by specific gravity.
Housings, Vessels, or Assemblies
Example Part Number: LMO 10 S - 3/4 F (See bold references in tables below)

Part Number: LMO < Length Code from Table 1 > < Material Code from Table 2 > - < Connection Size Code from Table 3 > < Connection Style Code from Table 4 >

Table 1 - Cartridge Length

Code Cartridge Length (cm/in)
46 10.2/4
10 25.4/10
20 50.8/20
30 76.2/30

Table 2 - Materials of Construction

Code Materials of Construction
Blank Cast Iron and 316 Stainless Steel
S 316 Stainless Steel

Table 3 - Connection Sizes

Code Connection Size
3/8 3/8 in.
1/2 1/2 in.
3/4 3/4 in.
1 1 in.

Table 4 - Connection Styles

Code Connection Style
Blank NPT
F Flange

6Flanges on the LMOS are welded to the cast head. Flanges are not available on the LMO models    

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