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
- Video: Breaking Down the Valterra Telescoping RV Gravity Fill Water Inlet
- Shop: B&B RV Gravity Water Inlet Hatch w Key Lock - Gray
- 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: B&B RV City Water Inlet with Brass Check Valve - Recessed Dish Mount - Black
- Shop: RV City Water Inlet with Brass Check Valve - 1/2" MPT - Plastic Flange - Surface Mount - White
- Q&A: Replacement Table Leg Recommendation for a Lagun Table in a Leisure Travel Van
- Q&A: Parts Needed To Flat Tow 2026 GMC Canyon AT4 With Roadmaster Falcon 2 Tow Bar
- Q&A: Recommended Replacement For A Dometic RM7732 RV Refrigerator
- Q&A: 2007 American Heritage Clearance Light Replacement
- Q&A: Replacement Fan Recommendation for the MaxxAir 4700K
- Article: The Definitive, Step-by-Step Flat Towing Setup Guide
- Q&A: Towing a 2013 Kia Sorento AWD Behind Motorhome
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: How Your RV Water System Works: A Complete Newbie's Guide
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.