Rain Bird® CP-100 Electric Automatic In-Line Irrigation Valve, 1" FPTBuna N diaphragm offers superior performance in harsh water environments. Reliable, non clogging design. Reverse Flow design reduces stress on diaphragm for dependable operation. In line design minimizes pressure loss of dirt and debris during installation and system start up. 1 in. female pipe thread inlet and outlet inline irrigation valve Buna N diaphragm offers superior performance in harsh water environments Reliable, non clogging design Reverse