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The Whale Premium Inline Booster Pump 13 LPM 12 V (GP1392) is a compact, high-flow fresh water inline pump designed to enhance the water supply system in caravans, motorhomes, campervans and boats. It boosts the flow rate of water through the plumbing system, making showers, taps and galley outlets more responsive and efficient.
This premium inline booster pump offers a quiet, lightweight design that fits directly into existing pipework — ideal for improving performance above submersible pumps or manual systems.
High flow performance: Delivers up to about 13 L/min (≈3.4 US GPM) to boost water flow.
12 V DC operation: Matches standard leisure vehicle electrical systems.
Compact & quiet: Easy to install inline, with low noise and vibration.
Lightweight & energy efficient: Low power draw and ideal for everyday use.
Supplied with adaptors: Usually includes 13 mm (1/2″) adaptors for flexible hose connections.
Versatile use: Works well with pressure switches, micro switches, or manual on/off systems.
1 × Whale Premium Inline Booster Pump GP1392 (12 V)
2 × hose adaptors for 10 mm (3/8″) or 13 mm (1/2″) flexible hose connections (included with many retail packs)
| Flow Rate 1 Metre Head | 11.75 LPM (3.1 US GPM) |
| Suitable For | Fiat Ducato|Volkswagen T6 |
| Automatic Bilge Pumps | No |
| Continuously Rated | Maximum continuous operation should not exceed 15 minutes |
| Flow Rate 3 Metre Head | 9.75LPM (2.5 US GPM) |
| Hose Size | 10mm / 3/8", 13mm / 1/2" |
| Self Primes up to | Pump is not self priming. |
| Inlet Outlet | For 10mm (3/8") or 13mm (1/2") ID Hose |
| Brand | Whale |
| Type | Fresh Water Pumps |
| Voltage Description | 12V DC |
| Model | GP1392 |
| Width | 38mm (1-7/16") |
| Length | 135mm (5.3"), Cable: 1 Metre |
| Fuse | 5A |
| Flow Rate Description | 13 LPM (3.4 US GPM) |
| Approvals | EMC Compliant, CE Marked |
| Amps Description | 3.6A |
| Supplied With | 13mm (1/2") adaptors |
| Warranty | 1 Year |
| Country of Origin | United Kingdom |
Caravan & motorhome fresh water systems
Campervans and van conversions
Marine and boat water systems
Boosting flow for showers, taps, and galley outlets
This inline booster is useful when you need additional flow from an existing system without replacing the main pump, or to supplement a submersible pump.
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