---
product_id: 1962837
title: "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"
brand: "seaflo"
price: "KD 19.84"
currency: KWD
in_stock: true
reviews_count: 13
category: "Seaflo"
url: https://www.desertcart.com.kw/products/1962837-seaflo-21-series-water-pressure-diaphragm-pump-12v-dc-1
store_origin: KW
region: Kuwait
---

# 12V DC power 1.2 GPM flow rate Adjustable pressure switch 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

**Brand:** seaflo
**Price:** KD 19.84
**Availability:** ✅ In Stock

## Summary

> 💧 Pump up your off-grid game with quiet, reliable flow!

## Quick Answers

- **What is this?** 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 by seaflo
- **How much does it cost?** KD 19.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/1962837-seaflo-21-series-water-pressure-diaphragm-pump-12v-dc-1)

## 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

- • **Built to Last:** Thermal protection guards against overheating, extending pump life for your adventurous lifestyle.
- • **Compact & Versatile:** Lightweight, space-saving design fits perfectly in RVs, boats, and remote water systems.
- • **Powerful Self-Priming:** Self-primes up to 6 feet for flexible, hassle-free installation anywhere off-grid or on the water.
- • **Whisper-Quiet Efficiency:** Engineered vibration mounts ensure peaceful water flow—no more noisy distractions in your RV or boat.
- • **Precision Pressure Control:** Adjustable pressure switch automatically stops the pump, saving energy and preventing wear.

## Overview

The SEAFLO 21-Series Water Pressure Diaphragm Pump delivers 1.2 GPM at 35 PSI using a durable Santoprene diaphragm powered by 12V DC. Its self-priming capability up to 6 feet and built-in thermal protection make it ideal for RVs, boats, and off-grid water systems. Featuring quiet operation with vibration-absorbing mounts and an adjustable pressure switch, this compact pump ensures efficient, customizable water pressure wherever you need it.

## Description

desertcart.com: 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 : Automotive

Review: Well made pump. - Works great. Shut up and buy it. Brand name. I also own a larger one.
Review: Its is pretty good value for the price and works well. - It works well for my purposes. It gives me the flow rate that I needed and runs on 12 volts. I use it in my sprayer and I like the adjustable presure switch that turns the pump off when I stop spraying.

## Features

- SPECIFICATIONS – Model: SFDP1-012-035-21 | Voltage: 12V DC | Flow Rate: 1.2 GPM | Max Pressure: 35 PSI | Self-Priming | Diaphragm Material: Santoprene | Inlet/Outlet Ports: 3/8" Hose Barb | Max Temp: 140°F
- QUIET AND EFFICIENT OPERATION – Engineered for minimal noise with vibration-absorbing mounts and a robust diaphragm design, providing consistent, quiet water flow for a comfortable experience in your RV, boat, or off-grid setup.
- SELF-PRIMING AND THERMALLY PROTECTED – Self-priming up to 6 feet, allowing for flexible installation options above your water tank; built-in thermal protection safeguards the pump from overheating for extended durability.
- VERSATILE APPLICATIONS – Perfect for RVs, boats, and off-grid water systems, this compact and efficient pump meets diverse water needs, from providing water on remote sites to pressurizing cabin fixtures and marine systems.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DLKT4OO |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,242 in Automotive ( See Top 100 in Automotive ) #1 in Boat Water Pressure Pumps #5 in RV Water Pumps & Accessories |
| Brand | SEAFLO |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,821) |
| Date First Available | June 24, 2013 |
| Global Trade Identification Number | 00637776645502, 00640674580349, 00787721093749, 00810039498149, 06410038780111 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.5 pounds |
| Item model number | SFDP1-012-035-21 |
| Manufacturer | Seaflo |
| Material | Polypropylene (PP) |
| Maximum Flow Rate | 1.2 Gallons Per Minute |
| Maximum Lifting Height | 4 Feet |
| Part Number | SFDP1-012-035-21 |
| Power Source | DC |
| Product Dimensions | 6.65"L x 3.94"W x 2.44"H |
| Size | 12 |
| Special Features | Pressure switch |
| Style | 1.2 GPM - 35 PSI |
| UPC | 640674580349 787721093749 615200881986 637776645502 |
| Voltage | 12 Volts (DC) |

## Product Details

- **Brand:** SEAFLO
- **Color:** Black
- **Item Weight:** 1.5 Pounds
- **Material:** Polypropylene (PP)
- **Maximum Flow Rate:** 1.2 Gallons Per Minute
- **Maximum Lifting Height:** 4 Feet
- **Power Source:** DC
- **Product Dimensions:** 6.65"L x 3.94"W x 2.44"H
- **Style:** 1.2 GPM - 35 PSI
- **Voltage:** 12 Volts (DC)

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61112CVoZEL.jpg)

## Available Options

This product comes in different **Style** options.

## 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

### ⭐⭐⭐⭐⭐ Well made pump.
*by D***R on February 9, 2026*

Works great. Shut up and buy it. Brand name. I also own a larger one.

### ⭐⭐⭐⭐⭐ Its is pretty good value for the price and works well.
*by R***N on September 22, 2025*

It works well for my purposes. It gives me the flow rate that I needed and runs on 12 volts. I use it in my sprayer and I like the adjustable presure switch that turns the pump off when I stop spraying.

### ⭐⭐⭐⭐ Compact and powerful
*by J***S on August 1, 2024*

Seems well constructed, a little bit noisy (as expected in this kind of pumps). After a week of use, it does its job in a vertical irrigation system for an indoor garden. The only reason I didn't give it 5 stars is that it doesn't have flow direction markings (inlet and outlet).

## 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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**Shop now:** [https://www.desertcart.com.kw/products/1962837-seaflo-21-series-water-pressure-diaphragm-pump-12v-dc-1](https://www.desertcart.com.kw/products/1962837-seaflo-21-series-water-pressure-diaphragm-pump-12v-dc-1)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-22*