Get fresh water in your RV when you want it, where you want it. The Lippert Flow Max 689052 12-volt RV water pump delivers strong, consistent water pressure with an average 50 PSI and 3.0 gallons per minute (GPM) flow rate — ideal for larger RVs with extended plumbing runs.
Built with a heavy-duty, corrosion-resistant motor and dry-run protection, this diaphragm-style pump provides reliable, on-demand water flow for RVs, campers, and marine applications.
Performance Specifications
- Voltage: 12V DC
- Flow Rate: 3.0 GPM
- Pressure: 50 PSI
- Pump Type: Diaphragm-style
- Certification: NSF/ANSI 372 (Lead-Free & Safe for Drinking Water)
- Warranty: 2-Year Limited Warranty
High-Pressure, High-Flow Performance
The Flow Max delivers:
- ? Strong 3.0 GPM water flow
- ? Consistent 50 PSI pressure
- ? Ideal performance for larger RVs and long plumbing runs
- ? Reliable operation for multiple fixtures running at once
Independently tested by Progressive Engineering, Inc. (Goshen, Indiana), the Flow Max outperformed the SHURflo Revolution 4008 in flow rate, pressure, and freeze/thaw durability.
Direct Replacement for Popular RV Water Pumps
The Lippert Flow Max 689052 works as a direct replacement for many common 12V RV water pumps, including:
- SHURflo 4008-101-A65 / 4008-101-E65 (Revolution 4008 series)
- SHURflo 2088-403-444 / 2088-422-144 / 2088-422-174 / 2088-422-444
- Lippert DS-01233-M (Grand Design OEM)
- Most 12V diaphragm pumps using standard ½” threaded ports
Note: Mounting hole locations may vary. New mounting holes may be required.
How the Flow Max Works
The Flow Max uses a self-priming diaphragm design:
- Self-Priming: Up to 6 ft vertical lift and 30 ft horizontal
- On-Demand Operation: Turns on when faucet opens, shuts off when closed
- Built-In Pressure Switch: Automatically shuts off around 50 PSI
- Check Valve: Prevents backflow contamination
- Thermal Breaker: Protects motor from overheating
- Dry-Run Safe: Won’t be damaged if tank runs empty
- No manual priming required.
Key Features & Benefits
- Heavy-duty corrosion-resistant motor with ball bearings
- Quiet operation for peaceful camping
- Screen filter included (installs on inlet side)
- Freeze/thaw tested housing (when properly winterized)
- Safe for potable water systems (NSF/ANSI 372 certified)
- Designed for intermittent, on-demand use
Important Usage Information
The Flow Max is designed for intermittent operation only (standard for RV water pumps).
Recommended duty cycle:
5 minutes ON / 10 minutes OFF under normal use.
Continuous high-pressure operation may shorten pump life.
Installation Details
- Port Size: Standard ½” threaded RV plumbing
- Wiring: 2-wire connection (12V positive & ground)
- Fuse: 15 amp fuse or breaker recommended
- Mounting: Secure to solid surface (new holes may be required)
- Filter Placement: Install included screen filter on INLET side
Dimensions
- Approximate Size: 8″ L × 5.25″ W × 5″ H
- Weight: Approximately 5 lbs
Always compare dimensions with your existing pump before ordering.
Why Upgrade to the Lippert Flow Max 689052?
If your current RV water pump has:
- Weak water pressure
- Slow priming
- Constant cycling
- Excessive noise
- Leaks or freeze damage
The Flow Max delivers stronger pressure, quieter operation, improved durability, and dry-run protection — making it a reliable upgrade for your RV fresh water system.
Before You Order
Verify the RV system is 12V DC and that 3.0 GPM at 50 PSI meets its needs; compare the 8 by 5.25 by 5 inch approximate size, mounting holes and inlet screen requirement before fitting.
Frequently Asked Questions
What flow and pressure are listed for this pump?
The listing specifies 3.0 gallons per minute and 50 PSI at 12V DC.
How much lift can the pump self-prime?
The specifications list self-priming up to 6 feet vertical lift and 30 feet horizontal.
Are new mounting holes potentially needed?
Yes. The listing notes mounting hole locations may vary and new holes may be required; check the mounting layout before installation.
