The Model 40830PA-DV is a particulate with petcock type drain valve it is recommended for aftermarket use on low volume power pumps and gravity-flow applications, as well as various low volume agricultural, commercial and industrial applications. It utilizes a 30 micron silcone treated media which is designed and recommended for applications where excessive contamination in gasoline and heavier distillates such as diesel fuel and fuel oils couses short filter life. It also utilize a petcock type drain valve located in the bottom of the filter for convenient drainage of collected water. Has a standard 1 3/8 - 12 UNF mounting thread 1 inch flow. 40830PA-DV utilize a silicone treated media which coalesces the water causing it to collect on the bottom of the filter. This allows it to be drained by utilizing the petcock drain valve. Petro Clear Filters are not designed for use with aviation fuels. It is compatible with alcohol blended gasoline with 15% maximum alcohol. However it is a particulate removing filter and will not react to the presence of water. It offers a 10 Micron nominal particulate removal. Phase separation will not be detected should it occur.