Description The Clay & Bailey Genx 01228 Overfill Prevention Valve (OPV) is designed for a pressure fill application to prevent tank overfills by stopping product delivery when a pre-set liquid level is reached. The valve installs through 4″ SCH 40 pipe nipple or on top of spill container. Connects directly to 2″ fill piping or 3″ via reducer. Please watch the GENXOPV video. https://claybailey.com/wp-content/uploads/2025/10/ClayandBailey_GenXOPV_V6-1080p_wCaptions.mp4
