Outer Diameters of Hose Connections for B&B RV Gravity Water Inlet Hatch
Updated 10/30/2025 | Published 10/01/2025
Question:
What is the outside dimensions of the hose connections - Water line and vent line?
asked by: Aaron B
0
Expert Reply:
Hey Aaron!
The B&B RV Gravity Water Inlet Hatch # BM68TR has a 1-1/4" outer diameter for the water line and 1/2" outer diameter for the vent line (see attached).
Will this work out for your setup?
expert reply by:
Jon G
0
Outer Diameters of Hose Connections
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
B&B RV Gravity Water Inlet Hatch w Key Lock - Gray
- RV Water Inlets
- Gravity Fill Inlet
- Flush Mount
- Plastic
- Gray
- B and B Molders
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: B&B RV Gravity Water Inlet Hatch w Key Lock - Gray
- Video: Breaking Down the Valterra Telescoping RV Gravity Fill Water Inlet
- Shop: Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - 3 GPM - 45 psi - 115V AC
- Shop: Valterra Telescoping RV Gravity Fill Water Inlet - Plastic
- Shop: Valterra Lockable RV Gravity Fill Water Inlet
- Q&A: Can a Seaflow 12 Volt Water Pump Be Adapted To Run Off 110 Volt Power?
- Shop: B&B RV Fresh Water Gravity Fill Inlet - Recessed Dish Mount - Polar White
- Shop: RV City Water Inlet with Brass Check Valve - 1/2" MPT - Plastic Flange - Surface Mount - White
- Shop: B&B RV City Water Inlet with Brass Check Valve - Recessed Dish Mount - Black
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Video: Measuring To Choose The Right Trailer Axle
- Shop: Trailer Wiring
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Video: How to Choose a Trailer Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer jack
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Shop: Brake Controller
- Video: etrailer Electric Trailer Jack with 7-Way Feature Review
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: trailer leaf springs
- Article: The 5 Best Trailer Drop Hitches You Can Buy
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Search Results: trailer wiring
- Article: How to Measure for Trailer Hitch Drop
Explore Expert Info
![Our Expert]()
on RV Water Inlets
on RV Water Inlets
Jon G.
10/30/2025
Hey Aaron, did the 1-1/4 inch water line and 1/2 inch vent line sizes on the B&B RV Gravity Water Inlet Hatch fit your setup? Sharing how it worked could help others checking their hose connections too.