Raypak 003900F Natural Gas Valve, Electronic Ignition (IID), for 206A-406A, 408A, R185-R405

Raypak 003900F Natural Gas Valve for Electronic Ignition (IID) Heaters

Part # 003900F | Genuine Raypak replacement part | For 206A to 406A, 408A, RP2100 R185 to R405 (1993 to 2004) and older Versa IID heaters

This is the combination gas valve Raypak lists for its natural gas pool and spa heaters with electronic ignition (IID), the type that lights the pilot automatically on each call for heat. It sits on the burner tray and feeds gas to the pilot and the main burners. Propane heaters take a different valve, Raypak 004306F.

✅ Fits these Raypak models:

• 206A, 266A, 336A and 406A atmospheric heaters with electronic ignition, natural gas, built from October 2004 (Raypak's parts list also names the 266 and 399)
• 408A Professional Series heater, natural gas
• RP2100 R185A, R265A, R335A and R405A with electronic ignition, built November 1998 to October 2003
• RP2100 R185B, R265B, R335B and R405B with electronic ignition, built October 2003 to October 2004
• RP2100 R185, R265, R335 and R405 with electronic ignition, built November 1993 to October 1998
• Versa 185A, 265A, 335A and 405A (1986 to 1988), Versa 185B, 265B, 335B and 405B with electronic ignition (1988 to 1992) and Versa 185C, 265C, 335C and 405C (1992 to 1993)
• Versa 055A (1987 to 1989), Versa 055B (1990 to 2013), Versa 105A (1991 to 1999), Versa 105B (1999 to 2006) and Versa 155B/C (1991 to 2006), electronic ignition
• Spa-Pak 053A and 053B (1984 to 1987), Gemini and Spa-Pak 153A (1984 to 1987) and the 151 with electronic ignition (1980 to 1981)
• Not for Low NOx heaters (the 207A to 407A use Raypak 010329F) or for the 106A and 156A, which use Raypak 014867F

🔧 Details:

• Raypak part name: Combination Valve, Nat. IID (parts library: KIT-GAS VALVE IID NAT, POOL)
• Fuel: natural gas. The propane version is Raypak 004306F
• For electronic ignition (IID) heaters only. Millivolt (standing pilot) natural gas heaters use Raypak 003898F
• Powered by the heater's 24 VAC control circuit

📌 Good to know:

• The 206A to 406A manual gives about 4.0 in. WC as the regulated pressure at the gas valve on natural gas, measured with a manometer.
• That manual pictures a Honeywell VR8340 valve for the 266A to 406A and a Robertshaw 7200 for the 206A; its parts list gives this one kit number for all four sizes.
• Changing a heater from one fuel to the other takes more than a valve. Raypak lists separate conversion kits and requires a qualified agency to do the work.
• Replacing a gas valve is a job for a qualified gas technician.

Check your heater's model and serial number before ordering.