Bull, Costco, Kirkland, Jenn Air, Nexgrill, Turbo Brass Orifice Valve - 31300

RRP: $3.13 (You save $0.47)
Current Stock:
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For availability, please contact us at: 1-877-983-0451

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Orifices screw onto the end of the valve (opposite the knob) and control the amount of gas that come through the burners. These orifices come blank and can be used for Natural or LP Propane gas when drilled to the appropriate size.

As always this should be only be performed by your local licensed technician/professional to get your orifice drilled to the correct btu's needed. 

Sold Individually

Fits SOME Models for the following brands: Bull, Costco, Kirkland, Nexgrill, Turbo, Weber


Fits Jenn Air : 720-0138

Fits Nexgrill : 720-0057, 720-0888

Fits Turbo : 720-0057

Will Fit Weber Summit S-670 (2008, 2009-2010)  OEM manifold 79175 or 79177 (Main Burners). NOTE These valves are flame throwers and contain a secondary orifice that cannot be changed. We recommend changing the Manifold.


Orifice is Blank


5mm dia orifice

0.5 mm thread size

Approx 1/4 inch long

#64 Starter Hole

Alternate part # NEX1766, MCM31300

This item is not an original manufactured part


To ensure you choose the correct replacement orifice for your grill, we recommend removing the original part and comparing it to what we list.



  1. Great service

    Great customer service on the phone and quick shipping. I now have order online and by phone the only thing I can double check address when you do online somehow my address got change by the online system, but don’t let that bother you, they have a great service and that make up for all.

    Verfied Customer Walter Looez on 28th May 2020

  2. Just what we needed

    replaced several parts on an old JennAir grill .It's working again :)

    Verfied Customer Unknown on 15th May 2019

  3. valves

    worked grate. fits right inside the old ones.

    Verfied Customer Unknown on 16th Feb 2018

  4. Robert Griffin

    The orifices were just what I needed and wanted. Very good service and price.

    Thank you

    Verfied Customer Unknown on 27th Sep 2017

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