Are the Alkin P-21 filter for the W-31 and the Bauer P21 Triplex filters fits most small Bauers the same?
Can I use the Bauer filters in an Alkin?
Lenght and dia are the same.
Thanks for any help.
Scott
Moderator: captain
What compressor did you get?h2operations wrote: ↑Sun Aug 14, 2022 11:51 amTHANK YOU.
I have been sitting here on the sidelines listening and watching. I have stepped off the ladder a picked up a compressor. Thank you for the real time info.
Thanks Bill. The reasoning why they left off the blue indicator in the LF filters makes sense. Even so, the blue indicator strips are the main reason I like LF filters. So if they're not workable on these filters, I might as well re-pack the metal filter canister with bulk filter media and use the downstream visual indicator and the hours of use to determine when to change filter media. I just ordered a Visual Indicator and disks from August Industries. I got both the general use and the double sensitive disks... I take pride in dispensing the driest air possible. The unit has 1/4 NPT connections. Not sure how it will fit into my Alkin fill whip but I'll post the results here.antique diver wrote: ↑Fri Aug 12, 2022 10:01 pmAbout the moisture strip that we all relied on for years...
It's not as foolproof as was once believed. Turns out that it is common for larger volumes of incoming air to channel up through the central portion of the drying media, causing it to adsorb more moisture than the outer most area. The test strip can remain blue even though the central portion of media is getting moist due to more air volume (and its moisture load) passing through it. Some filter cartridge manufacturers are leaving the strip out because of the potential for it giving an inaccurate blue color reading.
A small moisture sensor device installed just downstream of the main filter tower gives a much more accurate estimate of the moisture content of the treated air. These cylindrical devices are typically about 3 to 4 inches long and about 1.5 inches in diameter, and have a thick clear view port. That port gives a view of the same type of moisture indicating paper, showing up as blue when the air is appropriately dry, and fading to tan or white when moisture is greater than desirable for diving use. Prices can vary but I see them anywhere from 50 to $70 range. They work well, and have the added advantage that you can check the air moisture content any time without opening up the filter tower and removing the cartridge for a view.
SurfLung wrote: ↑Tue Aug 16, 2022 3:45 pmThanks Bill. The reasoning why they left off the blue indicator in the LF filters makes sense. Even so, the blue indicator strips are the main reason I like LF filters. So if they're not workable on these filters, I might as well re-pack the metal filter canister with bulk filter media and use the downstream visual indicator and the hours of use to determine when to change filter media. I just ordered a Visual Indicator and disks from August Industries. I got both the general use and the double sensitive disks... I take pride in dispensing the driest air possible. The unit has 1/4 NPT connections. Not sure how it will fit into my Alkin fill whip but I'll post the results here.antique diver wrote: ↑Fri Aug 12, 2022 10:01 pmAbout the moisture strip that we all relied on for years...
It's not as foolproof as was once believed. Turns out that it is common for larger volumes of incoming air to channel up through the central portion of the drying media, causing it to adsorb more moisture than the outer most area. The test strip can remain blue even though the central portion of media is getting moist due to more air volume (and its moisture load) passing through it. Some filter cartridge manufacturers are leaving the strip out because of the potential for it giving an inaccurate blue color reading.
A small moisture sensor device installed just downstream of the main filter tower gives a much more accurate estimate of the moisture content of the treated air. These cylindrical devices are typically about 3 to 4 inches long and about 1.5 inches in diameter, and have a thick clear view port. That port gives a view of the same type of moisture indicating paper, showing up as blue when the air is appropriately dry, and fading to tan or white when moisture is greater than desirable for diving use. Prices can vary but I see them anywhere from 50 to $70 range. They work well, and have the added advantage that you can check the air moisture content any time without opening up the filter tower and removing the cartridge for a view.
https://www.augustindustries.com/produc ... ndicators/
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