Coalescing Pre-Filter Membranes

Description

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. This all-in-one design minimizes dead volume, conserves panel space, and reduces potential leak points. These combination units are compatible with the same membrane kits used in our standard Guardian models. Corresponding part numbers can be found at the bottom of the attached chart.

Traditional T-Type

The GMS120/122 series features a traditional T-type design with an integrated coalescing pre-filter housed within the assembly. The GMS127G model adds a Pyrex bowl, enabling easy visual inspection of filter condition at a glance. In this series, the membrane is mounted on top with a vertical outlet, which helps maintain membrane cleanliness by promoting drainage.

A key feature of this series is its unique membrane holder plate, designed for easy maintenance. Once the collar is loosened and lifted, the plate slides out from underneath—allowing for quick membrane replacement without the need to disconnect any fittings.

Integral Coalescing High Flow Pre-Filter Membranes

The GMS130 Series builds on the proven design of our GMS120 Series, offering the same functionality with a physically larger membrane and coalescing element. The increased surface area of both components significantly extends service intervals, making it ideal for demanding or continuous sampling applications.

By integrating the coalescing filter and membrane into a single assembly, the GMS130 minimizes sample lag time, conserves panel space (one housing instead of two), and reduces the number of potential leak points by limiting connection interfaces.

Pyrex Bowl For Visual Monitoring

The GMS137G and GMS138G Series are low-pressure variants of the GMS130 Series, designed for applications where visual monitoring is essential. These models utilize the same large membrane and coalescing element as the GMS130 but feature a durable Pyrex® glass bowl for clear, at-a-glance inspection of liquid accumulation.

This design is ideal for systems requiring immediate visual confirmation of filter performance and liquid breakthrough, particularly in low-pressure environments.

Technical Details

Our porous membranes are manufactured from pure PTFE, offering exceptional chemical inertness and extremely low absorption characteristics. Designed for reliability across a wide range of applications, these membranes are available in two standard grades to suit various flow and fluid requirements:

• M1 (0.1 micron): A low-flow membrane ideal for most liquid applications.
• M2 (0.8 micron): A high-flow variant recommended for higher surface tension liquids, enabling faster processing without compromising separation integrity.