Abstract: A solids containment device for use in n hydromechanical grease interceptor, sized and shaped to be removably carried within the hydromechanical grease interceptor. The solids containment device includes a containment body with side and end walls, an open top, a wastewater inflow opening and an outflow opening. At least one removable solids separating screen is carried within the containment body, and is located between the inflow opening and the outflow opening. The outflow opening is directed away from the outflow aperture of the hydromechanical grease interceptor, in order to encourage a generally diagonal flow path for the wastewater stream within the hydromechanical grease interceptor, thereby encouraging separation of fats, oils and grease.

Abstract: A diffuser baffle for use in an in-line wastewater grease interceptor. The diffuser baffle lies within a grease collecting chamber between the inflow and outflow of a grease interceptor. The diffuser baffle has an open bottom which is sized and shaped respectively to fit into the grease collecting chamber. The diffuser baffle has an end operatively connected to the inflow opening to permit wastewater to flow into the body through the open bottom. The baffle has a downstream end which includes a deflector portion to deflect a wastewater stream in a direction generally into the grease collecting chamber. The body also includes a number of apertures to permit the deflected wastewater stream to pass through the baffle and into the grease collecting chamber, where FOG will separate before waste water exits the chamber through the outlet baffle.

Abstract: A vent for a building has a cover attached to a base. The base has an aperture permitting gas to pass. A moisture directing means on an underside of the cover directs moisture move under the influence of gravity to fall outside of the aperture. The cover may include a slanted side wall portion, with the aperture positioned with its center displaced from the center of the cover toward the slanted side. The base may include a pair of moisture deflecting features along at least a portion of one of the nonslope sides to prevent moisture flowing along the base from within an area on the base covered by the cover to outside of the covered area at the nonslope sides. The base may also include a water deflecting ridge on its underside positioned between a downslope edge and the aperture to deflect water away.