Stand-Alone Membrane Separators

The Guardian Membrane Series is engineered to provide complete removal of entrained liquids and solids from gas samples assuring sample integrity and protecting downstream analyzers.

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PRODUCT FEATURES / BENEFITS
Integral Porting and Mounting Bracket
Up to 70 LPM Flow (2.5 SCFM)
Up to 2200 PSIG Max. Pressure Rating on All SS Units
Hydrophobic Membrane Bonded to O-Ring for Ease of Service
Protect On-Line Analyzers
CNG / LNG Sampling Systems
Sampling Conditioning

Description

The Guardian Membrane Series is engineered to provide complete removal of entrained liquids and solids from gas samples assuring sample integrity and protecting downstream analyzers. Each unit is precision-machined from 316L stainless steel, rated for pressures up to 1,500 PSIG, and optimized for low-flow sampling applications.

 

Key Features:

  • High-Performance Filtration: Hydrophobic membrane effectively blocks all liquids and particulates, allowing only gas or vapor to pass through.

 

  • Compact, Robust Design: Ideal for space-constrained installations while delivering industrial-grade durability.
  • Tool-Free Maintenance: Membrane service is fast and easy—just unthread the cap and remove the plug. No tubing or connections need to be disturbed.
  • Premium Seal: Each unit comes with a bonded Viton O-ring to ensure a reliable, leak-tight seal.

All our Guardian Membranes are available in exotic materials: PTFE, Hastelloy C, Monel 400, and Titanium.

As an option we also offer Kalrez, EPDM, Buna and PTFE Encapsulated Viton O-rings.

 

For flow rates up to 15 LPM, we offer the GMS205 Series. This series maintains the user-friendly design of our GMS105 model, but incorporates a larger membrane. The increased surface area not only supports higher flow rates, but also extends service intervals by reducing membrane loading.

Standard assemblies are precision-machined from 316L stainless steel and come equipped with Viton® seals. Each unit is supplied with a hydrophobic/oleophobic membrane permanently bonded to a Viton® O-ring for reliable sealing and chemical resistance.

 

Material Options for Demanding Applications

 

All Guardian Membrane assemblies are also available in a range of exotic materials to suit challenging environments, including PTFE, Hastelloy® C, Monel® 400, and Titanium. Optional O-ring materials include Kalrez®, EPDM, Buna-N, and PTFE-encapsulated Viton® to meet specific chemical compatibility or temperature requirements.

Quick Comparison

Stand-Alone Membrane Separators removeFast Loop Filters (All Models) removeStainless Steel Process Housings removeHigh Pressure Alternative Fuel Dispenser Filter removeMiniature Ultra High Pressure Stainless Steel 10,000 PSIG Housings removeOptions for Stainless Steel Housings remove
NameStand-Alone Membrane Separators removeFast Loop Filters (All Models) removeStainless Steel Process Housings removeHigh Pressure Alternative Fuel Dispenser Filter removeMiniature Ultra High Pressure Stainless Steel 10,000 PSIG Housings removeOptions for Stainless Steel Housings remove
ImageStand-Alone Membrane SeparatorsFast Loop Filters (All Models)Stainless Steel Process HousingsHigh Pressure Alternative Fuel Dispenser FilterMiniature Ultra High Pressure Stainless Steel 10,000 PSIG HousingsOptions for Stainless Steel Housings
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Additional information
DescriptionThe Guardian Membrane Series is engineered to provide complete removal of entrained liquids and solids from gas samples assuring sample integrity and protecting downstream analyzers.Fast Loop Filters are engineered to minimize the time delay commonly associated with online analyzer sample systems. Unlike traditional three-port T-type designs, our Fast Loop configurations continuously flush the filter element of heavy contaminants while filtering only the sample stream. This design significantly reduces lag time and extends filter element life.Our Gas and Liquid Process Filters protect equipment from sample impurities by removing solids and liquids with up to 99.999% efficiency at 0.01 micron. This series is also suitable for liquid sample process applications when used with pleated liquid elements or stainless steel elements, achieving efficiencies as fine as 1 micron in liquids.United Filtration Systems’ stainless steel 180VP Series is purpose-built to withstand the rigorous demands of compressed natural gas (CNG) applications.The 110HP and 120HP Series Filters are designed for high-pressure applications, including gaseous and liquid sample process analyzers and fuel cell filtration.In applications where space is limited and maintenance is critical, our Inverted (IVT) housings provide an ideal solution. All line connections—including inlet, outlet, and drain ports—are in the head of the unit.
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