EUV 10 D – EUV 65 D devices, pipe diameter from 3/8” to 2-1/2”, are designed and supplied for household applications and buildings where the supply piping does not exceed the stated pipe diameters and where the rate of flow in piping is in at its optimum. The water flow through particular pipe diameter is defined by the design parameters and good engineering practices. In the cases where the flow rate in defined piping does not conform to the design optimum, then the devices are manufactured for the actual flow rate supplied by the purchaser at the time of order placement.