Split Nut for Pump Union 2 Inch Compression Nut Pumps

2" Pump Split Nut model 0121109020 by Magic Plastics comes with 2 screws. Also replaces part 0121109020 , 1005-4W , 121109020 , 400-5301.

This is a 2" spa pump union split nut also known as a 2" split compression nut.

When measuring for a split nut replacement, measure the inside diameter of the current "unsplit" nut (regular nut). 

• 2-7/16" actual diameter uses a 1 1/2" split nut (this one)
• 3-1/16" actual diameter uses a 2" split nut
• 3-3/4" actual diameter uses a 2 1/2" split nut

These are compression nuts with 2 screws for pump unions.

Heater split nuts are different than pump split nuts - this one is for a spa pump. 

Need the o-ring for this union? We offer the 2 1/2" o-ring.

121109020-SN same as 121109020