Seaflo 43-Series
Score: 88/100
Jabsco ParMax HD4
Score: 82/100Rankings
The Seaflo 43 Series is a compact, self-priming 12V DC diaphragm pump designed for marine, RV, and off-grid water systems, delivering up to 3.0 GPM at 55 PSI. It features internal bypass technology and Variable Flow Technology to minimize cycling and noise while eliminating the need for an external accumulator tank. It is ideal for medium-duty, battery-powered water systems in RVs and boats requiring consistent pressure for multiple outlets.
The Jabsco Q401J-115S-3A Par-Max HD4 is a heavy-duty 12V DC marine freshwater delivery pump designed for reliable high-pressure water delivery in boats. It features a 4 GPM open flow rate, cast aluminum lower housing, and an integrated bypass for smooth, on-demand operation with dry-run protection. Best suited for marine vessels with 2-4 water outlets requiring high-pressure freshwater delivery in rough conditions.
| Attribute | | |
|---|---|---|
3 GPM | 4 GPMbest | |
55 PSIbest | 40 PSI | |
6 ftbest | 6 ftbest | |
12 Vbest | 12 Vbest | |
6.86 Abest | — | |
140 °Fbest | 140 °Fbest | |
| ↓ lower better | — | 7.5 lbsbest |
0.75 inbest | 0.5 in |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance & Power(2) | ||
Flow Rate (GPM) | 3.0 GPM | 4 GPM |
Max Pressure (PSI) | 55 PSI | 40 PSI |
Build & Durability(2) | ||
Motor Type | Diaphragm | Brushed Permanent Magnet TENV |
Diaphragm Material | Santoprene | TPV |
Installation & Compatibility(1) | ||
Port Size (in) | 0.75 in | 0.5 in |
Professional reviewers and editors praise the Seaflo 43 Series as an exceptional value for low-flow marine and RV applications, highlighting its innovative internal bypass technology for reducing noise and cycling.
Everyday users and reviewers express high satisfaction with the pump's ease of installation and powerful flow rate. Common praise includes the ability to handle RV and camper demands effectively, with users noting the quiet, no-cycling operation in off-grid setups.
Professional sources emphasize the pump's durability, high performance, and marine-grade build quality, noting that the HD series offers improved pressure and lifespan through its cast aluminum housing and heavy-duty motor compared to standard plastic models.
No direct consumer reviews or specific user feedback were found in the provided data; availability notes indicate neutral reception with standard return policies.
“best budget 12V water pump”
“great pumping power”
