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
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
- Video: Review of B and B Molders RV Water Inlets - Gray RV Gravity Water Inlet Hatch Key Lock - BM68TR
- Shop: B&B RV Gravity Water Inlet Hatch w Key Lock - Gray
- Shop: Valterra Lockable RV Gravity Fill Water Inlet
- Shop: B&B RV Gravity Water Inlet Hatch - 4-3/4" x 4-1/4" - Key Lock - Polar White
- Shop: Valterra Lockable RV Gravity Fill Water Inlet
- Shop: B&B RV Gravity Water Inlet Hatch w/ Thumb Lock - Black
- 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
- Q&A: Can a Seaflow 12 Volt Water Pump Be Adapted To Run Off 110 Volt Power?
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer hitch
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Article: How to Measure for Trailer Hitch Drop
- Search Results: trailer wiring
- Shop: Suspension Enhancement
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: A Look at the Power Mountain Tallboy 6 Ton Off-Road Bottle Jack with a Military Cargo Trailer
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer jack
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Shop: Brake Controller
- Video: How to Choose a Trailer Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)




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.