Our pn MD1222 is a Large 4" tank opening in/out distributor head with a 1 1/2" distributor ( riser pipe ) opening.
NOTE: Special Order item. Allow extra 2 - 3 weeks before product will be shipped.
Includes distributor oring and top of tank oring.
Piping connections are 1.5" standard pipe thread female.

The distribution head is designed for single in-out applications on simple filters such as sediment removal, taste, odor or pH neutralization. This economical head fits onto standard 4" - 8 NPSM tank openings.