Magic Plastics 0121108020 FBT Pool & Spa Heater Union Split Nut: This is a split nut is used to join a pipe leading to the heater with the heater itself. A split nut helps to connect the pipes together.
Aquatemp Products Heater Uni-Nut®It is a patented design to end leaking split nuts on heaters. The Uni-Nut® is a one-piece nut that can be tightened by hand and changed in the field by removing a color-coded retainer. The black retainer
Balboa Temperature Sensor Cable [12 Inch (Diameter 1/4")] (30344)