Hayward
Corresponds with 15 in the diagram above.
Only works with 350,000 BTU.
Custom Molded Products AquaLevel Water Leveler 3/8" MIP Thermoplastic Float Assembly - 25504-000-100
Hayward Retainer Nut, 5/16"-18" - ECX176865
Hayward Pressure Gauge - ECX270861
Hayward Back Mount Pressure Gauge - ECX27091
Hayward Pressure Gauge - ECX2712B1