Seaflo WPS 3.0GPM 12V 33 Series
Seaflo WPS 3.0GPM 12V 33 Series

SEAFLO 33 SERIES 12V WATER PUMP

The Seaflo 33 Series 12V water pump supplies pressurised freshwater to boat and caravan outlets, with automatic operation as water is needed. The demand switch handles starting and stopping, so there is no need to switch the pump manually for each use. The 1/2" male NPT ports connect to matching female fittings, allowing the pump to be installed in threaded pipework or connected through hose adaptors.

✓ Maximum flow: 11.6L/min
✓ Shutoff pressure: 45psi
✓ Connections: 1/2"-14 MNPT
✓ Supply: 12V DC
✓ Maximum current: 8A
✓ Valves: EPDM

Seaflo 33 Series Water Pump Specifications

Seaflo WPS 3.0GPM 12V 33 Series
Seaflo WPS 3.0GPM 12V 33 Series
Seaflo WPS 3.0GPM 12V 33 Series PUMP-SFDP1-030-045-33
$163.16 /each

Supply caravan and boat freshwater outlets with the Seaflo 33 Series 12V demand pump. It delivers up to 11.6L/min, with pressure-switch shutoff at 45psi. The inlet and outlet use 1/2"-14 male NPT threads for matching female NPT fittings.

Automatic pressure control starts the pump as water is drawn and stops it when the outlet closes and pressure builds. A flexible diaphragm moves the water through the pump, while the valves control its direction. The diaphragm is Santoprene and the valves are EPDM.

Maximum flow is measured at low pressure. Delivery falls as pressure increases towards shutoff.

✓ Product Type & Application
Diaphragm demand pump for boat and caravan freshwater systems.
Model: SFDP1-030-045-33

✓ Capacity & Performance
Maximum flow: 11.6L/min
Shutoff pressure: 45psi
Maximum flow and shutoff pressure are separate limits; flow decreases as pressure rises.

✓ Connections & Compatibility
Connections: 1/2"-14 MNPT

✓ Electrical & Leads
Power supply: 12V DC
Maximum current: 8A

✓ Operation & Control
Automatic pressure-switch control responds to water drawn from the system.

✓ Dimensions & Mounting
Overall length: 202.5mm
Width: 130mm
Height: 123mm
Mounting centres: 73mm x 83mm
Mounting hole diameter: 4mm

✓ Construction & Features
Valves: EPDM
Diaphragm: Santoprene

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