Product Description
This is an OEM Regency LP Orifice #50 that is found in many Regency gas stoves and fireplaces (see applicable models below). This is a genuine Regency replacement part that will ship new in its original packaging – this is not an after-market copy.
Napoleon Part Number: 904-641 (Same as 904641)
Part Description: This is a genuine replacement #50 LP orifice that is found in many Regency gas stoves and fireplaces. An LP (Liquid Propane) orifice #50 is a precision-drilled brass fitting used to restrict and regulate the flow of propane gas to burners in appliances like stoves, fireplaces, and heaters. With a drill bit size of 0.0700 inches, it is commonly used to convert appliances from natural gas to propane or for high-altitude applications.
Applicable Regency Models:
- E33-1
- E33-10
- HZ30E
- HZ30E-1
- HZ30E-10
- HZ30E-11
- L900
- L900E
- P121E-11
- P131E-11
- P42-3
- P42-4
- PTO28
- PTO28-1
- U37
- U39
Please check your manual as this orifice may fit other Regency fireplaces as well.
If your part is not listed on our website, please contact us and we would be happy to help try and source it!
This genuine Regency LP Orifice #50 (904-641) is in stock ready to ship.








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