How to Know Difference Between NPT and Inverted Flare Fittiings for Propane
Updated 11/01/2026 | Published 10/31/2026
Question:
How do I know whether my propane regulator takes a 1/4” inverted flare or NPT hose connector?
asked by: Dan
0
Expert Reply:
Hey Dan, look into the hose on the inside of the fitting. If you see what looks like a tapered cone like shape down into the fitting you have an inverted flare. If it's totally flat it's NPT. You can see the difference and the difference in typical application in the attached picture. Is this a motorhome or a travel trailer?
expert reply by:
Jameson C
0
NPT vs. Inverted Flare
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
MB Sturgis Propane Pigtail w/ Back Check - Type 1 x 1/4" Male Inverted Flare - 4'
- Propane Fittings
- Hoses
- Pigtail Hoses
- 4 Feet Long
- Type 1 - Female
- 1/4 Inch - MIF
- MB Sturgis
more information >
Continue Researching
- Shop: MEC RV Pigtail Hose - Type I QCC x 1/4" Male NPT - 60"
- Search Results: rv battery
- Search Results: battery
- Video: Review of MEC Propane Fittings - RV Propane Pigtail Hose 5 Feet - MEC56CR
- Shop: MB Sturgis Propane Pigtail w/ Back Check - Type 1 x 1/4" Male Inverted Flare - 4'
- Q&A: What Is A Flare Propane Fitting
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Shop: Power Mountain Tallboy Off-Road Bottle Jack - 8-1/2" to 37-3/4" Lift - 6 Tons
- Shop: Blue Ox Patriot Portable Flat Tow Brake System - Proportional
- Search Results: trailer tires and wheels
- Shop: Trailer Wiring
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Shop: Trailer Wheel Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Search Results: trailer wiring
- Shop: Suspension Enhancement
- Shop: Brake Controller
- Shop: etrailer Electric Trailer Brakes - Self-Adjusting - 12" - Left/Right Hand - 5.2K to 7K
- Search Results: trailer jack
- Shop: Big Truck Big RV Trailer Jack Foot Scale with Tongue Weight Gauge - 2,000 lbs
- Search Results: rv air conditioners
- Shop: Gooseneck Hitch
- Shop: Base Plate for Tow Bar
- Shop: Fifth Wheel Hitch
- Q&A: Does The Lippert Drive Head Have A Plastic Or Metal Drive Pin?
- Q&A: Needing To Replace My Dometic Model B57915.711C0
- Q&A: Will 2019 Ford F-450 Require New Rear Tie-Downs Installing TorkLift Hitch
- Q&A: How Is TorkLift SuperTruss Hitch Extension Length Measured
- Q&A: Troubleshooting E3 Error Code on Furrion Thermostat