i have been using irritrol valves they seem to be the longest lasting valves on the market. and its the only valve I install. I give an unconditional replacement guarantee. Out of about 1000 I have installed I only had to warranty about 8 of them. that valve seems to last about 15 years,
I have been in business over 25 years and the only products I use are the ones that last the test of time. When I cut this style of valves out of the sprinkler system I have pulled some out that were over 20 years old when they finally broke. And yes irritrol has not produced this valve for 20 years but the style has been around I think for about 26 years under different names the original company has been bought out several times by different companies and improvements have been made to it. Even Rainbird solenoids seem to last only about 8 years or so.
Never cheep out on valves because you don't want to do the job twice.