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

(You save $0.85) $4.27
SKU: 62131300
FINAL SALE. No refunds

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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 (with a starter hole) 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. 

Orifice is Blank



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

Fits 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.


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

FINAL SALE. No refunds


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

Ask The Experts


  1. Great orifice blank

    Service was great and I drilled out 31300 orifice blank with # 59 drill for propane....Ng to Propane!

    Verified Customer Ken - 6th Jun 2022

  2. NG to LP success

    The orifices came with a starter hole. After a little experimenting and the proper drill bit. I am cooking with gas,

    Verified Customer EDDIE WILLIAMSON - 15th Jul 2021

  3. Very good quality

    I was not able to get this product from any other supplier including the manufacturer. The price was also best

    Verified Customer Joe - 2nd May 2021

  4. Fast & Friendly

    Fast shipping, Tracy was friendly and very helpful.

    Verified Customer Paul Blum - 23rd Sep 2020

  5. 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.

    Verified Customer Walter Looez - 28th May 2020

  6. Just what we needed

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

    Verified Customer Unknown - 15th May 2019

  7. valves

    worked grate. fits right inside the old ones.

    Verified Customer Unknown - 16th Feb 2018

  8. Robert Griffin

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

    Thank you

    Verified Customer Unknown - 27th Sep 2017

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