can this be added onto any dive mask? Also is its performance equal to an already installed purge on a mask?
JOSEPH B I'm not sure if it can be added to "any" mask but i did have it added to my second seaVision Mask and It works great. I will always try to have a purge on any of my future masks. Hope this helps.
CLARENCE J K I had one added to my SeaVision mask when I had them install prescription lenses. It works just fine, equal to other purges I have had in the past. I suspect that they will only install them in a SeaVision mask, but you might contact them to see if you send them your mask they will install a purge.
SPENCER H I have been very pleased with my SeaVision masks purchased through LeisurePro. I prefer purge valves in my masks and Leisure Pro has always been able to satisfy my needs by adding purge valves to any mask I choose. i have been very pleased with the performance of the masks and the added purge valves.
MADISON B I don't know if it can be added to 'any mask' but the one on my SeaVision works very well. Haven't had any issues with it.
JAMES A. G I have always had them added to my mask and find that they work great. I would recommend contacting sea vison about getting extra valves for it as they will eventually blow out so to wear. They seem to last for about 40 or so dives. I had one blow out during a 45 minute deco. It made for an interesting deco having to deal with a flooded mask. After that I always carried an extra mask on all deco dives. I still use sea vision mask with purge valves as I really like the quality and customer support from Seavision.