GOLDENROD (596) Canister Water-Block Fuel Tank Filter with 1" NPT Top Cap Water-Block filter removes water from gasoline and diesel fuel; Water-absorbing polymers trap water, restricting fuel flow when it is time to replace the canister Removes microscopic particles (10 microns) of rust, sand, dirt, scale, and lint Zinc die-cast top cap with 14" NPT pipe fittings Entire canister can be thrown away and replaced Maximum recommended flow rate of 25 GPM; working pressure up to 50 psi