---
product_id: 740851055
title: "Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine"
brand: "seaflo"
price: "S$25"
currency: SGD
in_stock: false
reviews_count: 5
url: https://www.desertcart.sg/products/740851055-seaflo-12v-dc-1-2-gpm-35-psi-21-series
store_origin: SG
region: Singapore
---

# 12V DC power 1.2 GPM flow rate 35 PSI built-in pressure switch Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine

**Brand:** seaflo
**Price:** S$25
**Availability:** ❌ Out of Stock

## Summary

> 💧 Stay powered, stay flowing—your water, on demand, anywhere!

## Quick Answers

- **What is this?** Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine by seaflo
- **How much does it cost?** S$25 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/740851055-seaflo-12v-dc-1-2-gpm-35-psi-21-series)

## Best For

- seaflo enthusiasts

## Why This Product

- Trusted seaflo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Small footprint fits perfectly in RVs, boats, and caravans without sacrificing performance.
- • **Durable & Self-Priming:** Runs dry safely and primes itself even when mounted above the tank—reliable wherever you go.
- • **Marine-Grade Reliability:** Built with thermal overload protection and rugged polypropylene for harsh environments.
- • **Energy Efficient Operation:** Low current draw means longer battery life and less power consumption on the road.
- • **Effortless Water Flow Control:** Automatic pressure switch starts/stops pump as you use water—no manual hassle.

## Overview

The Seaflo 12V DC 21-Series Diaphragm Water Pressure Pump delivers a steady 1.2 gallons per minute at 35 PSI with a built-in automatic pressure switch. Compact and self-priming, it’s designed for marine, RV, and caravan use, featuring thermal overload protection and low power consumption for reliable, efficient water pressure wherever you need it.

## Description

NEW 12V Self-Priming Water Pressure Pump 1.2 Gallons/Min (4.3 LPM) 35 PSI Product Details: This product is 100% brand new and comes in original color packing Powerful automatic pressure pump 1.2 Gallons Per Minute (4.3 LPM) capacity flow, and 35 PSI pressure Extremely efficient, very low current draw and offer high capacity output Self priming Smooth, silent operation Can run dry without damage Thermal overload and ignition protection Easy connecting system Low power draw Soft rubber mounts Professional grade pump - Ideal for marine, caravans/RV, and agriculture applications Built-in pressure switch, to automatically turn on and off as you turn your tap or nozzle on and off Beware of inferior non-genuine products on the market that claim to be just as good Specifications Voltage: 12V DC Flow capacity: 1.2 Gallons per minute (4.2 Litres per minute) Water pressure: 35 PSI Hose Outlets: Fixed 10mm (3/8") diam. hose tails Twin core wire Current Draw: 1.7 Amp (max. 2.7 Amp) Dimensions: Length 170mm x Width 100mm x Height 67mm Approvals: CE Applications For marine, RV, agriculture and recreational applications Suits all size boats, caravans, mobile homes, etc. For sinks, taps, showers, or toilets Other applications where you have to transfer water

Review: Produto muito bom
Review: This pump is noisy. It's not the first pump I've used/installed and this is no better than 20 year old pumps I've replaced. Considering the technology available it's sad that these pumps still shake too much when primed. They rattle everything around them. It works well but the low noise advertising isn't accurate at all. Try something else if you need a quiet pump. I returned this one.

## Features

- The 21-Series Pumps are compact and designed for a wide range of applications including liquid transfer, spraying, circulation, filtration and dispensing
- The 21-series of diaphragm pumps are self-priming and can be run dry without harm. It provides up to 1.2 gallons per minute
- Built-in 35 PSI pressure switch for automatic stop/start
- Self-priming allows it to be mounted above tank; able to run dry
- 1.2 gallons per minute (4.2 liters per minute) Built-in thermal protector; 3/8-inch hose barb ports

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DLKT4OO |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,484) |
| Date First Available | 23 July 2013 |
| Flow rate | 1.2 Gallons Per Minute |
| Item Package Quantity | 1 |
| Item Weight | 680 g |
| Item model number | SFDP1-012-035-21 |
| Manufacturer | Seaflo |
| Material | Polypropylene (PP) |
| Part Number | SFDP1-012-035-21 |
| Power Source | Electric |
| Product Dimensions | 16.51 x 9.65 x 6.35 cm; 680.39 g |
| Size | 1.2GPM 35PSI |
| Special Features | Pressure switch |
| Style | Diaphragm Pump |
| Voltage | 12 Volts (DC) |

## Product Details

- **Brand:** Seaflo
- **Colour:** Black
- **Item weight:** 1.5 Pounds
- **Material:** Polypropylene (PP)
- **Maximum flow rate:** 1.2 Gallons Per Minute
- **Maximum lifting height:** 4 Feet
- **Power source:** Electric
- **Product dimensions:** 17L x 10W x 6.7H centimetres
- **Style:** Diaphragm Pump
- **Voltage:** 12 Volts (DC)

## Images

![Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine - Image 1](https://m.media-amazon.com/images/I/61112CVoZEL.jpg)
![Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine - Image 2](https://m.media-amazon.com/images/I/81NketIxdDL.jpg)
![Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine - Image 3](https://m.media-amazon.com/images/I/81N3GyUYmbL.jpg)
![Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine - Image 4](https://m.media-amazon.com/images/I/814IYzPzDRL.jpg)
![Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine - Image 5](https://m.media-amazon.com/images/I/91uV4EHUrML.jpg)

## Questions & Answers

**Q: which side is the inlet ?**
A: There is an arrow pointing from one end to the other. Inlet is the end the arrow starts from. Direction of flow is parallel to the arrow.

**Q: can the cut off pressure be regulated/adjusted to about 15psi?**
A: This pump is built with 35psi switch and  can not adjusted to 15psi. Thank you!

**Q: Im looking to make a water misting system off the side of my rv. Would this pump be good to run for several hours continuously?**
A: Yes, it will run continuously for several hours. I've run it as a transfer pump when needed, and had it running for an entire day. Works great.

**Q: Is it a wash down pump?**
A: This pump can be used as a wash down pump. Thank you!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by H***E on 18 October 2024*

Produto muito bom

### ⭐⭐⭐ Review
*by D***W on 25 September 2025*

This pump is noisy. It's not the first pump I've used/installed and this is no better than 20 year old pumps I've replaced. Considering the technology available it's sad that these pumps still shake too much when primed. They rattle everything around them. It works well but the low noise advertising isn't accurate at all. Try something else if you need a quiet pump. I returned this one.

### ⭐⭐⭐⭐⭐ Review
*by A***W on 8 December 2025*

this is a really great pump with really great suction and output pressure (for 1 faucet). Installed 2 in my 4x4 rock crawler, 1 to run a hose, then a second one to refill the reservoir via suction. For the price it's unbeatable, but it is quite loud when running so be aware if that's something you care about

## Frequently Bought Together

- SEAFLO 21-Series Water Pressure Diaphragm Pump - 12V DC, 1.2 GPM, 35 PSI with Adjustable Pressure Switch, Self-Priming, Quiet Operation for RV, Boat, and Off-Grid Applications
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-12*