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Point-of-Use Filters
For maximum filtration efficiency, strength and reliability, the GasShield POU filter line is the industry's first and still largest collection of all-metal filters. Which means Mott offers the greatest assurance of having the precise filter you require – whether it's Hastelloy®; C-22 to withstand corrosive gases, or our latest high-flow innovations…nickel-based Sentry and all-stainless Defender POU filters.
GasShield POU filters
Key GasShield®; POU features include:
9 Log reduction value
Greater than 99.9999999% removal of all particles down to 0.003µ;m; confirmed at the most penetrating particle size of 0.08µ;m.
High-performance operation
Operating temperatures up to 450°C (inert gas).
Able to withstand 1000 psi differential (69 bar) pressure @ 20°C.
All units are He leak-tested to a maximum 1 x 10-9 atm cc/sec.
Parts per trillion dry down achievable.
>1 trillion particles retained at the rated flow with zero particles detected downstream of tested filters.
Particle shedding of <1 particle/ft3 in accordance with SEMASPEC 93021511A-STD.
Rugged, high-quality construction
5 Ra surface finish on all internal hardware components.
Media is sintered with no binders or slurry so "the only material of construction of the media is the media."
Minimized surface area permits required flow characteristics at >9 log particle retention.
Filter element is designed to provide required flow at minimal pressure drop while minimizing surface area to provide virtually zero out-gassing.
All-welded construction eliminates out-gassing which accompanies polymeric filters.
Materials of construction
Standard GasShield POU filters are offered with 316L stainless steel porous metal media in 316L VAR/ electropolished stainless steel or nickel housings.
Mott also offers POU filters made of Hastelloy C-22 for use in corrosive gas applications such as HCI, HBr and WF6. We are the only filter supplier to the semi- conductor industry to offer filter media and housings in Hastelloy C-22.
We also manufacture nickel filters capable of filtration at higher flow rates.

GasShield®; PENTA®;-MV.
This all-metal filter design has the industry's smallest interior volume, minimizing purge- down time by removing any dead space within the device which might entrap moisture, particles or other contaminants. More durable than polymer-membrane products, the PENTA-MV employs a nickel filter element that ensures durable performance for equipment – including gas cabinets, valve manifold boxes and process tools. The filter housing is manufactured from a single, solid piece of bar stock, eliminating weld-area leaks and corrosion, resulting in the cleanest housing of any available filter product. The single-element weld also yields the smallest weld surface in the industry and makes the PENTA-MV cost- competitive with Teflon®;-type filters.
Features.
Hiflow nickel filter media.
Fast drydown and purge time.
Flow rates up to 15 slpm @ 9 LRV.
No housing welds.

GasShield®; PENTA®; Point-of-Use Gas Filters.
Features.
High-strength nickel filter media.
High flow rates – small footprint.
Flow rates up to 75 slpm @ 9 LRV.
Reliable performance.
 
Sentry Filters
The high flow of Teflon ®; with the strength and long life of Mott porous metal

PENTA®; Nickel Media
True 9-Log Filtration Efficiency of Particles as Small as 0.003 µ;m @ 30 slpm
High Temperature Tolerance up to 450°C (Inert Gases)
Withstands High Pressures to 3000 PSIG (206.8 Bar) at 52°C
316L VAR Stainless Steel Housing Construction
1 x 10-9atm cc/sec Helium Leak Rating
< 1 Particle/Ft3 Particle Shedding
Maximum Forward and Reverse Differential Pressure of 500 PSIG (34.5 Bar) @ 52°C
Cleaned and Packaged in a Class 100 Clean Room
 
GasShield Defender Filters
All Stainless Steel with the Strength and Long Life of Mott Porous Metal

316L Stainless Steel Media
True 9-Log Filtration Efficiency of Particles as Small as 0.003 μm;
Confirmed at the Most Penetrating Particle Size of 0.08 μm for flows up to 50 slpm
Operating Temperature up to 450°C (Inert Gases)
Operating Pressure to 3000 PSIG (206.8 Bar) at 52°C
316L VAR Stainless Steel Housing Construction
10 Ra Surface Finish on Gas Wetted Surfaces
1 x 10-9 atm cc/sec Helium Leak Rating
< 1 Particle/Ft3 Particle Shedding
Maximum Forward and Reverse Differential Pressure of 1000 PSID (68.9 Bar) @ 52°C
Manufactured, Cleaned and Packaged in a Class 100 Clean Room
Total Hydrocarbon Emissions Below Detectable Limits
Moisture Contribution <10 ppb After One Hour at Low-flow Ambient Purge
 
 
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