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#1
12-19-2006, 04:02 AM
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I was thinking about buying a couple of valves and a controller, so i went to Rona to check them out. I took 1 appart and found that there are only 2 metal parts. There is a metal rod that guides the diaphram, and the second metal part is the spring that is on top of the diaphram.
from what I could determine, only the metal rod comes into contact with water. the spring is on top of the diaphram, so i can't see it coming in contact. HAving said that, if we could find a plastic replacement for the metal guide, then the valves would be useable... hmmm... i wonder if it's worth the try... 
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#2
12-19-2006, 02:15 PM
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yup, its been done befor. either plastic or stainless (good quality)
Steve
__________________
 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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#3
12-20-2006, 03:53 AM
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i've used my design for about 10-12 months now with no problems, basically 3 valves and a wavemaker powerbar, other than a clean out every 4 months or so and usually it only takes about 5 min per or just a clearing of the hole that plugs and releases the blatter inside. The 1" valve seliniods (shaft and spring) i have are stainless steel so rust is not an issue. The only unique thing i did was to put in a 1/2" (valved half open) bypass on the center of 3 valve just in that off chance all the power is lost to the valves and the pump remains running, as the valves are "normally off" the mod prevents a pump damage possability. Also i cut of the pad on the flow adjustment to allow max flow through as i have the 3 valves (2 working at any time, mostly) on a sequence hammerhead (6000gph or so). note the model valve i have come with 24volt or 120 volt A/C seliniods, i use the 24 volt with a 24volt step down transformer i picked up 3 from value village the seliniods are about $20 each to replace if they ever wear out, but mine have been switching on/off every 20seconds for 10-12 months 24/7. only drawback is the click niose they make but mine are in the fish room/basement so no worries for me.
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If it was easy it wouldn't be any fun.
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