About 30 % of grill owners report uneven heating because their orifice doesn’t match the BTU demand. If you’ve ever struggled with hot spots or wasted propane, the right orifice can fix that fast. Choosing the proper thread pitch, diameter, and flow size isn’t just a tweak—it’s the key to consistent flame and safety. Below are the top seven options, each paired with the factors you should weigh before swapping any parts.
| Range Stove Orifice Conversion Kit Gas Spray Tip Set (36pcs) | Versatile Kit | Material: Brass | Thread Size / Connection: M6 × 0.75 mm | Package Quantity: 36 pieces (11 aperture sizes) | VIEW LATEST PRICE | Read Our Analysis | |
| 3/8″ Flare to 1/8″ NPT Brass Propane Orifice Fitting |  | Compact Adapter | Material: Brass | Thread Size / Connection: 1/8 NPT (male) with 3/8 flare male side | Package Quantity: 3 pieces (fittings) | VIEW LATEST PRICE | Read Our Analysis |
| Weber Natural Gas to Propane Conversion Kit with Regulator Hose |  | Full‑Feature Set | Material: Brass (solid) | Thread Size / Connection: 1/4 -32 UNF (male) – regulator hose fittings | Package Quantity: 36 orifices + hose + fittings (full kit) | VIEW LATEST PRICE | Read Our Analysis |
| Brass Orifice Nozzle 1/4″-32UNEF for Gas Stoves (0.8mm Jet) |  | Precision Jet | Material: Brass (solid) | Thread Size / Connection: 1/4 -32 UNF (male) | Package Quantity: 20 pieces (0.8 mm jets) | VIEW LATEST PRICE | Read Our Analysis |
| Natural Gas to Propane Orifice Kit 10 Brass Nozzles |  | Compact Pack | Material: Brass (corrosion‑resistant) | Thread Size / Connection: M6 × 0.75 mm | Package Quantity: 10 pieces (0.5 mm jets) | VIEW LATEST PRICE | Read Our Analysis |
| Nexgrill Gas Conversion Orifice – Natural Gas or Propane |  | Custom Fit | Material: Brass (custom‑configured) | Thread Size / Connection: Model‑specific threaded set (custom) | Package Quantity: Complete set (quantity varies by model) | VIEW LATEST PRICE | Read Our Analysis |
| Weber Natural Gas to Propane Conversion Kit with Regulator Hose | Premium Conversion | Material: Brass (solid) | Thread Size / Connection: 1/4 -32 UNF (male) – regulator hose fittings | Package Quantity: 14 orifices + hose + fittings (full kit) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Range Stove Orifice Conversion Kit Gas Spray Tip Set (36pcs)
If you’re swapping a natural‑gas range for propane, the 36‑piece orifice conversion kit is the go‑to solution—its 11 aperture sizes let you fine‑tune every burner for ideal flame and heat. You’ll find brass M6×0.75 mm spray tips ranging from 0.3 mm to 1.9 mm, each tested for precise flow. The kit works with major brands—Siemens, Samsung, Frigidaire, Whirlpool, Bosch—so you can replace any burner nozzle. Deep, accurate threads guarantee a leak‑free fit, and the strong surface tolerance keeps performance stable. At just 3.2 oz and compact dimensions, it’s a lightweight, reliable upgrade for your stove.
- Material:Brass
- Thread Size / Connection:M6 × 0.75 mm
- Package Quantity:36 pieces (11 aperture sizes)
- Compatibility Focus:Gas ranges & stove burners (multiple brands)
- Intended Gas Type:Natural gas → propane conversion
- Included Installation Tools:None (tips only)
- Additional Feature:11 aperture sizes
- Additional Feature:Deep precise threads
- Additional Feature:100% pre‑tested
3/8″ Flare to 1/8″ NPT Brass Propane Orifice Fitting
The 3/8″ flare‑to‑1/8″ NPT brass fitting is the go‑to choice for anyone building or upgrading a propane grill, because its solid‑brass construction and hex‑style design give you a leak‑proof, tool‑free connection that handles high heat and corrosion. You’ll receive three male adapters that join a 3/8″ flare hose to a 1/8″ NPT burner port, perfect for freestanding stoves, turkey pots, fryers, or DIY burners. The brass resists corrosion and stays ductile at grilling temperatures, while the hex head lets you tighten by hand. Installation is quick, and the fittings fit any propane appliance that uses standard NPT threads, delivering reliable, consistent flame control.
- Material:Brass
- Thread Size / Connection:1/8 NPT (male) with 3/8 flare male side
- Package Quantity:3 pieces (fittings)
- Compatibility Focus:Propane burners, grills, stoves (DIY)
- Intended Gas Type:Propane connection (flare to NPT)
- Included Installation Tools:Hex design – tool‑free tightening
- Additional Feature:Hex design, no tools
- Additional Feature:Solid brass durability
- Additional Feature:DIY burner building
Weber Natural Gas to Propane Conversion Kit with Regulator Hose
Grill owners looking for a hassle‑free switch from natural gas to propane will appreciate the Weber conversion kit’s 5‑foot regulator hose and 36 brass orifices—each sized to deliver the exact fuel flow your Weber Genesis, Spirit, or Summit model needs. The kit includes a high‑quality rubber hose, two fittings, a wrench, and sealing tape, all built from solid brass for durability. You’ll match the correct orifice set to your grill’s model, ensuring consistent flame size and stability. Installation takes minutes, and the kit’s design prevents leaks and uneven heating. Double‑check your grill series before you start, then enjoy reliable, even cooking on propane.
- Material:Brass (solid)
- Thread Size / Connection:1/4 -32 UNF (male) – regulator hose fittings
- Package Quantity:36 orifices + hose + fittings (full kit)
- Compatibility Focus:Weber Genesis, Genesis II, Spirit, Summit grills
- Intended Gas Type:Natural gas → propane conversion
- Included Installation Tools:Wrench, sealing tape, regulator hose
- Additional Feature:5 ft regulator hose
- Additional Feature:36 LP orifices
- Additional Feature:100% solid brass
Brass Orifice Nozzle 1/4″-32UNEF for Gas Stoves (0.8mm Jet)
Owners of Weber Genesis‑style grills who need a reliable propane‑to‑natural‑gas conversion will appreciate the 0.8 mm jet on this brass orifice nozzle. This solid‑brass piece screws into a 1/4‑32UNEF male thread, delivering a 0.031‑inch hole that yields roughly 3,100 BTU on natural gas and 7,600 BTU on propane. It fits pre‑2005 Genesis, Genesis II, and Genesis II LX models, but skips newer Genesis, Spirit II, and Spirit lines. Each pack contains twenty nozzles, each 8 mm across with an 8.75 mm height. The metal resists corrosion, so you’ll reuse it for years, and 24/7 support stands ready if questions arise.
- Material:Brass (solid)
- Thread Size / Connection:1/4 -32 UNF (male)
- Package Quantity:20 pieces (0.8 mm jets)
- Compatibility Focus:Weber pre‑2005 Genesis, Genesis II, Genesis II LX grills
- Intended Gas Type:Natural gas & propane (dual)
- Included Installation Tools:None (nozzle only)
- Additional Feature:0.8 mm jet hole
- Additional Feature:20‑piece pack
- Additional Feature:24/7 customer service
Natural Gas to Propane Orifice Kit 10 Brass Nozzles
If you need a quick, reliable way to convert a natural‑gas grill to propane, this 10‑pack brass orifice kit is the perfect solution. Each nozzle features a 0.5 mm hole, M6 × 0.75 mm thread, 7 mm hex, and 8 mm height, making installation a breeze. The corrosion‑resistant brass end high heat, preventing wear and deformation. You can replace worn jets on multiple burners or use the kits for stove and range repairs. Threaded connectors guarantee a secure fit, while the globe valve design delivers consistent flame control and balanced gas‑air flow. The compact dimensions (1.06 × 1.73 × 2.28 in) keep your grill tidy.
- Material:Brass (corrosion‑resistant)
- Thread Size / Connection:M6 × 0.75 mm
- Package Quantity:10 pieces (0.5 mm jets)
- Compatibility Focus:General gas stoves & ranges (propane/NG)
- Intended Gas Type:Propane (conversion kit)
- Included Installation Tools:None (nozzle only)
- Additional Feature:0.5 mm hole size
- Additional Feature:7 mm hex head
- Additional Feature:Corrosion‑resistant brass
Nexgrill Gas Conversion Orifice – Natural Gas or Propane
When you need a seamless switch from natural gas to propane, the Nexgrill Gas Conversion Orifice set delivers exactly what you’re looking for. This custom‑configured kit matches your grill’s model number and includes every orifice you need for a full conversion. You can select either natural‑gas or propane configuration, and the parts are guaranteed to fit perfectly—or Appliance’ll make them right. The set measures 10 × 6 × 1 in., is made by ApplianceDude LLC, and carries the model NEX‑BRASS‑01. Customers rate it 4.4 ★ out of 5, and it ranks #1,011 in Grill Connectors & Hoses.
- Material:Brass (custom‑configured)
- Thread Size / Connection:Model‑specific threaded set (custom)
- Package Quantity:Complete set (quantity varies by model)
- Compatibility Focus:Specific grill model (custom)
- Intended Gas Type:Natural gas or propane (user‑selected)
- Included Installation Tools:Custom set – may include tools (unspecified)
- Additional Feature:Custom configured per model
- Additional Feature:Guaranteed perfect fit
- Additional Feature:10 × 6 × 1 in dimensions
Weber Natural Gas to Propane Conversion Kit with Regulator Hose
The Weber Natural Gas to Propane Conversion Kit with Regulator Hose is the top pick for anyone who wants a quick, reliable switch from NG to propane without sacrificing flame stability. It fits Genesis, Genesis II, and Spirit II models, and the 5‑ft regulator hose plus 14 hand‑drilled brass orifices deliver consistent BTU output. You’ll appreciate the solid‑brass construction and high‑quality rubber fittings that keep gas flow smooth and steady. Installation is user‑friendly: just match the orifices to your grill, attach the hose, and tighten the fittings. The result is even cooking for steaks, vegetables, and buns, letting you grill with confidence.
- Material:Brass (solid)
- Thread Size / Connection:1/4 -32 UNF (male) – regulator hose fittings
- Package Quantity:14 orifices + hose + fittings (full kit)
- Compatibility Focus:Weber Genesis, Genesis II, Spirit II grills
- Intended Gas Type:Natural gas → propane conversion
- Included Installation Tools:Fittings, wrench, sealing tape, regulator hose
- Additional Feature:14 precision orifices
- Additional Feature:High‑quality rubber hose
- Additional Feature:User‑friendly installation
Factors to Consider When Choosing an Orifice for Propane Grill
When you pick an orifice, make sure it matches the gas type you’ll use and that its size is precisely calibrated for the desired BTU output. Check that the material can withstand heat and corrosion while fitting the grill’s thread specifications. Finally, verify the orifice can deliver the required BTU range without compromising performance.
Gas Type Compatibility
Choosing the right orifice for your propane grill hinges on matching the gas type to the orifice’s specifications. Propane burns hotter than natural gas, so an orifice calibrated for propane must accommodate higher pressure and flow rates. Verify that the orifice’s material—often brass or stainless steel—resists corrosion from propane’s moisture content. Check the manufacturer’s rating for propane compatibility; some orifices are dual‑rated for both gases, but they may not deliver ideal performance for propane alone. Guarantee the inlet thread size matches your grill’s regulator, and confirm that the orifice’s flow coefficient (Cv) aligns with propane’s energy content. By confirming these factors, you’ll avoid under‑ or over‑firing, maintain consistent heat, and protect your grill’s burners.
Orifice Size Accuracy
One key factor in getting a propane grill to perform is matching the orifice size exactly to the grill’s BTU rating. You’ll find orifice dimensions listed in millimeters or fractions of an inch, and they must line up with the manufacturer’s recommendation for your model. Check the spec sheet before you buy; a 0.5 mm orifice for a 30,000‑BTU unit won’t work the same as a 0.7 mm for a 45,000‑BTU grill. Installing the wrong size can cause poor combustion, uneven heating, and even safety hazards. Measure the existing hole, verify the new orifice fits tightly, and double‑check the fit. a secure installation guarantees the proper air‑fuel mix, exemplary flame quality, and reliable performance every time you fire up.
Material Durability
All you need to know about material durability is which metals or composites can handle the heat, corrosion, and wear of a propane grill. Brass orifices rank high—they resist corrosion and stay strong under high temperatures, making them a reliable workhorse. Stainless steel offers similar durability with added oxidation resistance; it won’t discolor or weaken over time. Aluminum is light and cheap, but it softens under prolonged heat and erodes faster, so expect a shorter lifespan. Cast iron endures pressure well, yet it rusts if moisture lingers, demanding regular seasoning. Ceramic survives extreme heat but is brittle; a sudden impact can crack it, leaving you with a costly replacement. Choose the material that matches your grill’s exposure and maintenance routine to keep performance consistent.
Thread Specification Matching
Most grills rely on a specific thread size—like M6×0.75 mm or 1/4″-32 UNEF—to lock the orifice into the gas inlet, so you’ll need to verify that match before you buy a replacement. First, inspect the existing orifice or the inlet opening; note the thread pitch, diameter, and type (metric vs. UNC/UNEF). Compare those measurements to the new part’s specifications; a mismatch can cause leaks, cross‑threading, or a loose fit that prevents proper gas flow. If you’re unsure, consult the grill’s manual or manufacturer’s website for the exact thread code. When in doubt, ask a professional or a reputable supplier to confirm the thread match, ensuring a secure, leak‑free connection.
BTU Output Requirements
If you match the orifice size to your grill’s BTU rating, you’ll get the right flame intensity and efficient cooking. Propane burners typically range from 20,000 to 60,000 BTU each, so the orifice must allow enough gas flow to hit those numbers without starving or flooding the flame. An oversized orifice pushes excess fuel, creating a huge, scorching flame that wastes propane and can scorch food. An undersized orifice throttles flow, leaving you with weak, uneven heat and longer cook times. Use the manufacturer’s chart or a BTU‑to‑orifice conversion table to pinpoint the exact aperture. This alignment guarantees consistent temperature across the cooking surface, ideal fuel use, and reliable performance every time you fire up the grill.
Installation Ease
One key to a hassle‑free grill conversion is choosing an orifice that installs quickly and securely. Look for a hex‑head design; you’ll tighten or loosen it with a simple wrench, no extra tools needed. A straightforward installation means you won’t have to cut or weld anything—just slide the fitting onto the regulator and screw it in. Pre‑drilled holes that match your grill’s BTU rating eliminate guesswork and guarantee proper flow. Choose a reusable, durable fitting so future swaps stay painless. Clear instructions and diagrams guide you step‑by‑step, reducing errors and saving time. When the orifice checks these boxes, you’ll finish the conversion in minutes and enjoy reliable performance without hassle.
Brand Compatibility List
Choosing the right orifice starts with confirming that it matches your grill’s brand and model; manufacturers like Weber, Nexgrill, and many others often have specific part numbers and thread sizes, so check the compatibility chart or your grill’s manual before buying. Look up the exact part number your grill lists for its stock orifice; this number usually reveals the thread diameter and flow rating you need. If you’re using a conversion kit, verify that the kit’s specs list your brand explicitly—most kits label Weber, Nexgrill, Char‑Bros, and similar names. When in doubt, call the manufacturer’s support line or browse their website’s accessories section; they’ll validate the correct size and thread type. Matching brand and model eliminates leaks, guarantees proper pressure, and keeps your propane conversion safe and efficient.
