SEAFLO 41-series 4.5GPM pump with fittings and strainer
SEAFLO 41-series 4.5GPM pump with fittings and strainer
Seaflo WPS 4.5GPM 12V 41 Series
SEAFLO 41-series 4.5GPM pump with fittings and strainer
Seaflo WPS 4.5GPM 12V 41 Series

SEAFLO 41 SERIES 12V WATER PUMP

The Seaflo 41 Series 12V water pump supplies freshwater to boat and caravan pressure systems through a four-chamber diaphragm design. Automatic demand control responds as outlets open and close, while the internal bypass helps manage changes in water demand. The Quick Attach ports accept the corresponding Seaflo hose or threaded adaptors. Motor thermal protection helps protect against overheating during intermittent use.

✓ Maximum flow: 17L/min
✓ Shutoff pressure: 40psi
✓ Connections: 3/4" Quick Attach
✓ Supply: 12V DC
✓ Intermittent: the pump needs cooling breaks between runs. It is not designed to keep pumping without stopping.

Seaflo 41 Series Water Pump Specifications
Seaflo 41 Series Installation Manual

SEAFLO 41-series 4.5GPM pump with fittings and strainer
SEAFLO 41-series 4.5GPM pump with fittings and strainer
Seaflo WPS 4.5GPM 12V 41 Series PUMP-SFDP1-045-040-41
$205.83 /each

The Seaflo 41 Series supplies freshwater to boat and caravan outlets at up to 17L/min, with a 40psi shutoff pressure. Its 3/4" Quick Attach ports accept the corresponding Seaflo adaptors, allowing the hose or threaded connection to be matched to the installation.

The 12V pump starts and stops automatically as outlets are used. Internal bypass control helps handle small water draws, while the four-chamber diaphragm assembly moves water through the pump. Motor thermal protection helps protect against overheating; the pump remains intended for intermittent use.

Flow decreases as pressure rises. Use the performance data in the linked sheet to assess delivery at the required pressure.

✓ Product Type & Application
Four-chamber diaphragm demand pump for boat and caravan freshwater pressure systems.
Model: SFDP1-045-040-41

✓ Capacity & Performance
Maximum flow: 17L/min
Shutoff pressure: 40psi
Maximum flow and shutoff pressure are separate limits; flow decreases as pressure rises.

✓ Flow at Pressure
SFDP1-045-040-41 | 12V
0psi: 16.40L/min
20psi: 13.20L/min
25psi: 13.00L/min
30psi: 9.80L/min
35psi: 7.80L/min
40psi: 0.00L/min

✓ Connections & Compatibility
Connections: 3/4" Quick Attach

✓ Electrical & Leads
Power supply: 12V DC

✓ Duty
Intermittent: the pump needs cooling breaks between runs. It is not designed to keep pumping without stopping.

✓ Operation & Control
Automatic pressure-switch control.
Internal bypass helps handle small water draws.

✓ Construction & Features
Four-chamber diaphragm assembly.
Motor thermal protection.

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