This is one heckuva humma humma ding ding heavy duty sprinkler valve. Regardless of the make & model of sprinkler valves that I buy from Home Cheapo or SoLows, I have to replace them every 12-18 months. This Rainbird sprinkler has wall thicknesses twice as much as the Joe Homeowner schtuff from the big box stores, and hopefully the internal mechanisms are of the same quality.