a base having a throat portion and a flange portion extending radially outwardly from the throat portion, the throat portion at least partially defining a channel therethrough, an axis, and an outlet;

a gravel guard ring coupled to the base, including a plurality of teeth, and a plurality of ring locking members, wherein a plurality of gullets are defined between the teeth; and

a dome releasably coupled to the base with a plurality of dome locking members, the dome including a plurality of spaced ribs extending radially outwardly from a core element and defining gaps therebetween, and a plurality of crossbars extending between and interconnecting some adjacent ribs, the crossbars are positioned such that each crossbar is not aligned with any crossbars positioned in adjacent gaps,

wherein the plurality of dome locking members rotationally engage the plurality of ring locking members to releasably couple the dome to the base.