About this product
The Summerset MVO-SIZPRO-NG is the natural gas main valve orifice for pre-2025 Sizzler Pro grills. It is the small jet at the main burner valve that meters gas into the burner, sized for natural gas only.
At a glance
- Natural gas: NG orifice size only
- Sizzler Pro: Pre-2025 SIZPRO grills
- Main burners: Not the IR back burner
- Small part: Swap with the gas off
Details
Part number MVO-SIZPRO-NG Part Main valve orifice Fuel Natural gas Fits Summerset Sizzler Pro natural gas grills, pre-2025 (SIZPRO32, SIZPRO40) Main valves per grill 4 on the 32", 5 on the 40" (2019 Sizzler Pro manual) NG regulator setting 4.0" water column (2019 Sizzler Pro manual) Not for Propane grills, standard Sizzler grills, the IR back burner Propane version MVO-SIZPRO-LP, listed separately Brand SummersetNatural gas only. Match the part to the fuel on your rating plate. Summerset tunes the orifices and regulator to the gas listed on the rating plate. Have a licensed gas professional install gas parts, then leak test every connection with soapy water before lighting.
Questions people ask us
Which grills does this orifice fit?
It is listed for Summerset Sizzler Pro natural gas grills, the pre-2025 SIZPRO32 and SIZPRO40. The 2019 Sizzler Pro manual shows 4 main valves on the 32 inch and 5 on the 40 inch.
Will it fit a standard Sizzler?
Standard Sizzler grills have their own orifice listing, MVO-SIZ-NG. Check which series your grill is before you order.
Can I use it to convert my grill to propane?
No. This is the natural gas size. Propane grills use MVO-SIZPRO-LP. Summerset notes that changing fuel needs a conversion kit and may need more than orifices, so have a gas professional handle any conversion.
What about a 2025 or newer Sizzler Pro (SZRPRO)?
The current Sizzler Pro manual for the SZRPRO32 and SZRPRO40 lists its own numbered main valve orifices. Send us your model and serial and we will check which one your grill takes. Ask us here.
Not sure this is the right orifice?
Send us the model and serial number from the rating plate on your grill, plus a photo of the old part if you have it out, and we will check it before you order. Ask us here.
Description supplied by Aqua Terra Backyard through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
