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.

GMS Series – Stand-Alone Membrane Separators

Guardian Membrane Separators (GMS Series) – Full Catalog – Tables

Sample Conditioning – Analytical FIlters (Full Catalog) 2

PRODUCT FEATURES / BENEFITS
s  Integral Porting and Mounting Bracket
s  Up to 70 LPM Flow (2.5 SCFM)
s  Up to 2200 PSIG Max. Pressure Rating on All SS Units
s  Hydrophobic Membrane Bonded to O-Ring for Ease of Service
s  Protect On-Line Analyzers
s  CNG / LNG Sampling Systems
s  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 removePTFE Filter Housings removeGuardian Spin Clean removeHigh Pressure Alternative Fuel Dispenser Filter removeMiniature Ultra High Pressure Stainless Steel 10,000 PSIG Housings removeAnalyzer Panel Filter (Model 170) remove
NameStand-Alone Membrane Separators removePTFE Filter Housings removeGuardian Spin Clean removeHigh Pressure Alternative Fuel Dispenser Filter removeMiniature Ultra High Pressure Stainless Steel 10,000 PSIG Housings removeAnalyzer Panel Filter (Model 170) remove
ImageStand-Alone Membrane SeparatorsPTFE Filter HousingsGuardian Spin CleanHigh Pressure Alternative Fuel Dispenser FilterMiniature Ultra High Pressure Stainless Steel 10,000 PSIG HousingsAnalyzer Panel Filter (Model 170)
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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.PTFE filter housings are engineered specifically for applications requiring exceptional chemical resistance and minimal adsorption. These housings support a range of filter elements for both gaseous and liquid filtration.The Guardian Spin Clean (GSC) is engineered around our proprietary Guardian Membrane Series platform, delivering a highly serviceable, field-friendly solution for particulate removal.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.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.
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