The 121109025 split nut pump fitting is designed to fit plumbing connections of size 2-1/2" and 3-5/16".
It is used for pump unions and has a Female Buttress Thread (fbt) and a small flange.
This split nut is suitable for pumps that attach to 2-1/2 inch inner diameter plumbing.
Please ensure to check the specifications of your pump and plumbing before purchasing or installing this fitting.