Watts Regulator Co. offers the GoldenEagle(TM) Series 719 double check valve assemblies in sizes from 1/2" to 2". The 719's chloramine-resistant elastomers provide a long life in varied water conditions, and its top-mounted covers allow each check to be serviced independently and provide full access to internal check valve components. The 719's push-in check valve seats are replaceable without the use of expensive tools, and its SAE top-mounted test cocks reduce testing time and provide easy access in meter box installations.Watts Regulator Co.