RV fresh water pumps must deliver steady pressure at multiple fixtures without excessive noise. SEAFLO 33 Series diaphragm pumps are the most common upgrade for campers and travel trailers.
12V vs 110V
Use 12V DC when running on house batteries while traveling. Choose 110V/115V AC when connected to shore power full-time — both are available in the 33 Series line.
33 Series Overview
Expect about 3.0 GPM at 45 PSI with self-priming on-demand operation. Suitable for one shower plus a kitchen sink in most RV floor plans.
Accumulator Tanks
Pair the pump with a SEAFLO accumulator tank to store pressurized water. Fewer pump cycles means less noise when someone opens a faucet briefly.
Recommended Setup
For typical campers: 33 Series 12V pump + accumulator + inline strainer before the pump inlet. Use our Product Finder to confirm fit.
