Waterco Filter/Valve Air Release w/O-Ring (620221) mpindustries and this Magic Plastics UniBody

and this Magic Plastics UniBody version features a 1-1/2 inch union by 1-1/2 inch slip configuration with an 80 psi rating using the 0516-15 reference

Raypak 266A burner spacer

The Viton seal material

Excellent choice for repair

and this Jacuzzi AV and SherLok 1-1/2 inch Tank Body is designed for compatible applications where the original tank has cracked

Waterco Filter/Valve Air Release w/O-Ring (620221) mpindustries and this Magic Plastics UniBodyThe Waterco filter and valve air release with O ring is designed for compatible systems where controlled release of trapped air is needed as part of normal filter or valve service. An air release component is useful because it helps manage air buildup and supports smoother system startup or maintenance procedures. This replacement is especially useful when the original air release is leaking, sticking, or no longer sealing correctly around the O ring