Watermaker Question

mobetah · 09-11-2009, 04:14

I'm installing a new SW125 filmtec membrane in my watermaker (the old one was removed and discarded four years ago). The membrane has a black rubber gasget on one end but not the other. Being old and forgetfull, I can't remember if the end of the membrane with the rubber gasget is installed at the feed end or the discharge end of the vessel. I've looked on the filmtec or other membrane mfg. websites but can't find any information. If anyone know for certain which end goes where, your help would be very much appreciated.

Thanks, Bill S/V Mobetah

Sailorguy · 09-11-2009, 06:48

Bill...I am pretty sure (its been awhile) that the gasket goes on the output end of the membrane.

Steve

Sailorguy · 09-11-2009, 07:10

Bill.. I googled and found this; it appears that the seal can be placed on either end as long as the flared side the seal faces the raw water input.

Steve

FILMTEC Membranes - Brine Seal Location and Direction

Question On which end of the element should the brine seal be placed before loading?

Answer When shipped from the factory, brine seals are located on the feed end of the element, with the flared side facing the direction of the incoming feedwater. Brine seals can be placed on either end of the elements as long as they seal in the feed stream direction with the flared side facing the incoming feedwater.

When loading or installing new elements, here are a few tips:

Load the membranes into the feed end of the vessel.
The end of the membrane without a brine seal should be placed in the vessel first.

mobetah · 09-11-2009, 08:36

Thanks steve, that was a big help!

Bill A.

09-11-2009, 04:14	#1
mobetah Registered User Join Date: Dec 2007 Location: Corpus Christi, TX (sometimes) Boat: Endeavour40 - MOBETAH Posts: 235	Watermaker Question I'm installing a new SW125 filmtec membrane in my watermaker (the old one was removed and discarded four years ago). The membrane has a black rubber gasget on one end but not the other. Being old and forgetfull, I can't remember if the end of the membrane with the rubber gasget is installed at the feed end or the discharge end of the vessel. I've looked on the filmtec or other membrane mfg. websites but can't find any information. If anyone know for certain which end goes where, your help would be very much appreciated. Thanks, Bill S/V Mobetah

09-11-2009, 07:10	#3
Sailorguy Registered User Join Date: Oct 2007 Location: Melbourne, Florida Boat: Southern Cross 39 - sv Kristali Posts: 48	Bill.. I googled and found this; it appears that the seal can be placed on either end as long as the flared side the seal faces the raw water input. Steve FILMTEC Membranes - Brine Seal Location and Direction Question On which end of the element should the brine seal be placed before loading? Answer When shipped from the factory, brine seals are located on the feed end of the element, with the flared side facing the direction of the incoming feedwater. Brine seals can be placed on either end of the elements as long as they seal in the feed stream direction with the flared side facing the incoming feedwater. When loading or installing new elements, here are a few tips: Load the membranes into the feed end of the vessel. The end of the membrane without a brine seal should be placed in the vessel first.

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09-11-2009, 06:48	#2
Sailorguy Registered User Join Date: Oct 2007 Location: Melbourne, Florida Boat: Southern Cross 39 - sv Kristali Posts: 48	Bill...I am pretty sure (its been awhile) that the gasket goes on the output end of the membrane. Steve

09-11-2009, 08:36	#4
mobetah Registered User Join Date: Dec 2007 Location: Corpus Christi, TX (sometimes) Boat: Endeavour40 - MOBETAH Posts: 235	Thanks steve, that was a big help! Bill A.