[smellsfishy]

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.