Raypak 006707F Polymer Return Header with O-Ring Gaskets for R185A-R405A, R185B-R405B, 206A-406A and 207A-407A Pool Heaters

The return header closes the end of the tube bundle on the side opposite the water piping, behind the heat exchanger inspection panel, and it carries the drain plug used when the heater is winterized.

• RP2100 R185A to R405A with polymer headers: built 1998 to 2004; R185B to R405B with polymer headers: built 2003 to 2004.
• One part number for all four sizes (185, 265, 335, 405).
• Not for heaters with ASME cast iron headers, which use return header 006731F.
• Includes the O-ring gaskets (callout 6-HP, listed as O Ring Gasket (2)), also sold on their own as 006713F.
• Raypak catalog name: KIT-HDR RETURN POLYMER.
• Raypak lists the flange nut kit (008259F), bolt kit (006712F) and drain plug (006721F) on their own lines.

Good to know: Raypak's parts lists for the 206A to 406A and 207A to 407A print return header kit 015095F; the 2026 edition of the 206A to 406A manual prints 100-10008782 in its place, together with a new drain plug, 100-10008775. The header O-ring gaskets (006713F) and flange nuts (008259F) have the same part numbers on all of these heaters and on the RP2100. If your heater's manual shows 100-10008782, use the drain plug number that manual gives.

Raypak's R185A to R405A manual gives 7 ft-lb as the most the header bolts should be tightened and calls for a non-petroleum lubricant on the gasket when a header is refitted.