Name: Integral Coalescing Pre-Filter Membranes
SKU: 6679
Price: 0.01 USD
Availability: InStock

Integral Coalescing Pre-Filter Membranes

Guardian Membranes are also offered with integral coalescing pre-filters. A 50C grade element is mounted before the membrane to remove most liquids and solids, thus providing longer membrane life. This integral package minimizes dead volume, panel space, and leak points. The combo units accept the same membrane kits as our standard Guardian units. Part numbers are specified at the bottom of the attached chart. Our Model GMS170 takes the built-in coalescing filter one step further by inverting the complete assembly and making it easy to service by eliminating the need to break port connections. Here too we reduced internal volume for better conditioning results.

Product Bulletin Download

Housing Models
Technical Details

Stainless Steel Model	GMS120	GMS122	GMS127G	GMS170
Port Size (NPT)	1/8"	1/4"	1/4"	1/4"
Drain & Sample Port (NPT)	1/8"	1/4"	1/8" / 1/4"	1/4"
Maximum Pressure (psig)	1500	1500	100	2000
Internal Volume (cc) In Sample Chamber - Behind Membrane	0.118	0.118	0.118	23.8 (Total)*
Weight of Housing (lbs)	2.0	2.0	2.0	1.5
Principle Dimensions: (inches)
Body Diameter	2.00	2.00	2.00	2.12
Overall Length	5.08	5.08	5.52	3.23
Space Required to Coalescing Element	2.36	2.36	2.64	1.61
Maximum Temp. (300ºF) Standard Viton O-Ring	GVGMS120	GVGMS120	GVGMS120	GVGMS170
Coalescing Element PTFE Membrane Code (1) **Specify: M1 (Low Flow) or M2 (High Flow)	12-57-50C MT.33.xHG/50C	12-57-50C MT.33.xHG/50C	12-57-50C MT.33.xHG/50C	22/32-27-50CS MT.33.xHG/170
Drawing For More Detail & Options	GMS120	GMS122	GMS127G	GMS170
PTFE Model Max. Pressure: 100 PSIG, Maximum Temp: 250ºF	GMS120P	GMS122P	n/a	n/a

Notes:
(1) Replace the “x” with the flow required. i.e. MT.33.M1HG/50C, MT.33.M2HG/50C
(*) Internal Volume on the GMS 170: Inlet Side of Element: 3.9; Drain Side of Element: 19.5; Sample Side of Membrane: 0.4

Traditional T-Type

The GMS120/122 series utilizes the traditional T-type design, with a coalescing pre-filter built into the assembly. The GMS127G utilizes a pyrex bowl for at a glance monitoring. The membrane is mounted on top with a vertical exit point, which assists in keeping it clean. This series utilizes a unique membrane holder plate which simply slides out from underneath the collar once it is loosen and lifted. This plate allows membrane maintenance without breaking any connections.

The porous membranes are produced from pure PTFE; they are extremely inert and have very low absorption levels. There are two standard grades available for use in low to high flow applications. The M1 (0.1 micron) is a low flow type membrane suitable for most liquids and the M2 (0.8 micron) is a high flow type recommended for higher surface tension liquids.

Our Oleophobic membranes designated by the “H” suffix (i.e. MT.33.M2H) have an extra thin layer which repels hydrocarbons and will block both water and hydrocarbons. They exhibit the same flow rate characteristics as our standard membranes.

Membrane Size	MT.19.M1G	MT.19.M2G
Membrane Type	Low Flow	High Flow
Material	PTFE	PTFE
Diameter (mm)	19	19
Thickness (μm)	152	152
Maximum Temperature (ºF)	300	300
Recommended Flow Rate (LPM)	0.25	6
Membrane Micron Size	0.1	0.8

Membrane Size	MT.33.M1HG	MT.33.M2HG
Membrane Type	Low Flow	High Flow
Material	PTFE	PTFE
Diameter (mm)	33	33
Thickness (μm)	152	152
Maximum Temperature (ºF)	300	300
Recommended Flow Rate (LPM)	0.35	10
Membrane Micron Size	0.1	0.8

Membrane Size	MT.61.M1HG	MT.61.M2HG
Membrane Type	Low Flow	High Flow
Material	PTFE	PTFE
Diameter (mm)	61	61
Thickness (μm)	152	152
Maximum Temperature (ºF)	300	300
Recommended Flow Rate (LPM)	2	15
Membrane Micron Size	0.1	0.8

Membrane Size	MT.89.M1G	MT.89.M2G
Membrane Type	Low Flow	High Flow
Material	PTFE	PTFE
Diameter (mm)	89	89
Thickness (μm)	152	152
Maximum Temperature (ºF)	300	300
Recommended Flow Rate (LPM)	3	43
Membrane Micron Size	0.1	0.8

The above flow rates are with a 3 PSID across the membrane and are for reference purposes only. The flow may be increased, but we do not recommend exceeding a 5 PSID in order to maintain the integrity of the membrane. The M1 membrane is suitable for separation of most liquids from gases. The M2 membrane is best suited for the separation of water and other high surface tension liquids from gases.