Dometic 31078 is an OEM #50 LP gas orifice service kit for select Dometic / Atwood Hydro Flame RV furnace applications. Use this listing when your furnace parts diagram, original orifice, or Dometic service label calls for part 31078 / SKU 9108916040.
When this #50 LP gas orifice is the right repair
This small brass metering orifice helps control LP gas flow in the furnace burner assembly. Replace it only when your service information identifies the #50 LP orifice as the correct part, or when a qualified RV technician has diagnosed the original orifice as damaged, restricted, missing, or incorrect for the appliance setup.
Fitment and part-number checks
- Dometic / Atwood service part number: 31078
- Package SKU shown: 9108916040
- Description on package: KIT, SVC ORIFICE #50 LP
- Application family: Dometic / Atwood Hydro Flame RV furnace service parts
- Verify the #50 stamp, thread style, brass body shape, and original furnace parts list before ordering
What is included
Includes the brass #50 LP gas orifice shown in the product photos. The gallery includes top, side, stamped-face, and package-label views to help you confirm the part before ordering.
Important safety note
LP gas furnace parts should be installed and leak-tested by a qualified RV service technician. Do not substitute a different orifice size or fuel type unless the appliance manufacturer documentation specifically calls for it.
Shop more Dometic OEM RV service parts or use ERVP's AI Live Chat with photos of your furnace label and old orifice if you need help confirming fitment.
| Part_number | 31078 |
|---|---|
| Product_name | Dometic LP Gas Orifice #50 - Atwood Hydro Flame Furnace |
| Orifice_size | #50 |
| Fuel_type | LP Gas |
| Brand | Dometic |
| Compatible_brand | Atwood |
| Compatible_furnace_model | Hydro Flame |
| Product_type | Orifice |
| Part_category | Service Part |
| Oem_part | true |
| Function | Fuel flow meter for burner combustion |
| Condition | New |
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.