Why Would RV Overflow Valve Overflow When being Filled with City Water
Updated 12/29/2025 | Published 12/11/2025
Question:
I have a 2022 KZ 281 BHSE When i hook up to city water the overflow valve below the fill overflows, I have the valve switched to City water
asked by: Mike S
0
Expert Reply:
Hey Mike, this means a check valve has failed. We have that with the part # P23415LFVP which you need to replace on your setup and this issue will stop.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Valterra Check Valve for RV Fresh Water Systems - Dual 1/2" MPT - Brass
- RV Fresh Water
- Prevent Backflow
- Valves
- Brass
- Water Heater Check Valve
- 1/2 Inch
- Threaded
- Valterra
more information >
Continue Researching
- Q&A: Replacement AC for ARC13AACBL2
- Q&A: Do I Need Special Fuses Or Breakers When Installing New PowerMax Power Center Converter In RV?
- Q&A: Recommended Replacement for a Marshall 290-1 Regulator
- Q&A: RV Water Inlet Replacement for 2001 Country Coach
- Q&A: Adding 7 Way to 2018 Jeep Renegade with existing 4 Way Wiring
- Q&A: Installation of MaxxAir Replacement Lift Operator
- Q&A: How To Install Manual Lift MA10-20281K-3CF Replacement Part On MaxxAir Roof Vent
- Article: Top Weight Distribution Hitches for a Buttery Smooth Ride
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: How to Drain an RV Water Heater
- Article: How (and Where) to Connect an RV Propane Grill
- Article: Best Bike Racks for Electric Bikes
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Article: Towing a Trailer? Let's Talk About Brake Controllers
Jameson C.
12/29/2025
Hey Mike, how did things go after replacing the check valve on your KZ 281 BHSE? Did that stop the overflow when hooked up to city water? Your update could make it easier for the next person with the same issue.