For an alternative new AMV product press here >3" Threaded [75mm] AMV - DOSE-O-MAT is a water automatic batch controller. Excellent solution to fill small pools, large tanks, vessels, mining activities and any work with predefined needed volume of water. This tiny AMV automatic water flowmeter and shutoff valve is a professional solution for cement and concrete batching. Larger models, up to 12" are available as well.