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 removeAnalyzer Panel Filter (Model 170) removeCoalescing Pre-Filter Membranes removeStainless Steel 1,500 PSIG Housings removeHigh Pressure Mid-Size Stainless Steel 3,000 PSIG Housings removeSight Glass Housings remove
NameStand-Alone Membrane Separators removeAnalyzer Panel Filter (Model 170) removeCoalescing Pre-Filter Membranes removeStainless Steel 1,500 PSIG Housings removeHigh Pressure Mid-Size Stainless Steel 3,000 PSIG Housings removeSight Glass Housings remove
ImageStand-Alone Membrane SeparatorsAnalyzer Panel Filter (Model 170)Coalescing Pre-Filter MembranesStainless Steel 1,500 PSIG HousingsHigh Pressure Mid-Size Stainless Steel 3,000 PSIG HousingsSight Glass 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.The 170 Series offers a compact and versatile solution for modern sample conditioning systems. Designed for inverted (upside-down) or horizontal installation, all connections—including inlet, outlet, drain, and bypass—are located in the head, allowing element servicing without breaking any connections.Guardian Membranes are also available with integrated coalescing pre-filters. A 50C-grade element is positioned upstream of the membrane to effectively remove the majority of liquids and particulates, thereby extending membrane life.The 130 and 140 Series filters are ideal for use with gaseous and liquid sample process analyzers, as well as other demanding applications.The 130HP and 140HP Series Filters feature a rugged, yet straightforward design, making them an excellent choice for CNG applications and other high-pressure systems. TFour standard sizes are available, based on our Pyrex and stainless steel filter assembly design.
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