---
product_id: 255153934
title: "Seaflo 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)"
brand: "seaflo"
price: "฿8927"
currency: THB
in_stock: true
reviews_count: 5
category: "Seaflo"
url: https://www.desertcart.co.th/products/255153934-seaflo-42-series-diaphragm-pump-with-bypass-for-reduced-cycling
store_origin: TH
region: Thailand
---

# 12V/24V dual voltage power 3.0 GPM high flow rate Internal bypass reduces cycling Seaflo 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)

**Brand:** seaflo
**Price:** ฿8927
**Availability:** ✅ In Stock

## Summary

> 💧 Pump up your off-grid game with power, precision, and peace of mind!

## Quick Answers

- **What is this?** Seaflo 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts) by seaflo
- **How much does it cost?** ฿8927 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/255153934-seaflo-42-series-diaphragm-pump-with-bypass-for-reduced-cycling)

## 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:** Meets RoHS, SGS, and ISO standards with a 2-year warranty for peace of mind
- • **Smart Cycling:** Internal bypass technology minimizes pump cycling for longer life and efficiency
- • **Flow Like a Pro:** Delivers a steady 3.0 gallons per minute to keep your system running smoothly
- • **Quiet Confidence:** Rubber base vibration absorption ensures whisper-quiet operation in any environment
- • **Power Meets Precision:** Dual 12V/24V compatibility for versatile power setups

## Overview

The Seaflo 42 Series Diaphragm Pump is a compact yet powerful 12V/24V pump delivering 3.0 GPM at 55 PSI. Featuring internal bypass technology to reduce cycling, it ensures efficient, continuous duty with quiet operation thanks to vibration-absorbing mounts. Designed for marine, RV, agricultural, and off-grid applications, it meets rigorous RoHS, SGS, and ISO standards and comes with a 2-year warranty.

## Description

SEAFLO 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V 3.0GPM 55PSIMeet our newest addition to our diaphragm pumps: the 42 series. It retains the raw power and pressure of its predecessors, but also can adapt to situations where huge flow is not needed. Compact but capable, it is a great fit for tight spaces. It also may be configured with different inlet types, each with their own unique fittings, to be sure that it fits any application you can find.TYPICAL APPLICATIONSMarine,RV,Agricultural Spraying,General Industrial,Filtration,Beverage Processing,Solar Water System.DETAILSType: 4 Chamber positive displacement diaphragm pump, self priming, capable of being run dryControl Type: Pressure switch & By pass controlMax Recommended Temperature: 60° C（140° F）Priming Capabilities: 6 feet (1.8 m) suction liftRe-start Pressure: Shut-off Pressure 55 PSI : 41 PSI ±5 PSI (±0.3 bar)Inlet/Outlet Ports: 1/2"-14 MNPTWeight: 4.0 lbs (1.9 kg)MOTORLeads: 16 AWG, 9.4" (24 cm) long with 2-Pin connector / LeadsDuty Cycle: IntermittentMax.Amp Draw: 7.5 AFuse: 11.3 ASTANDARD PUMP CONFIGURATIONSModel: SFDP1-030-055-42Open Flow(GPM/LPM): 3.0 / 11.3Voltage: 12 VControl Type: switch & By passMax Draw: 7.5 AShut-off Pressure(PSI/BAR): 55 / 3.8Valves: EPDMDiaphragm: SantoprenePorts: 1/2"-14 MNPTWire Connections: 2-Pin/Leads

Review: Excellent product. Super quiet, very easy to install, perfect fit for my setup, very well made. It comes with a rubber base to absorb vibrations which makes it quieter than it already is. I’ve been using it daily for about a week now without any issues. My daily use is basically to water my garden which takers about 30 minutes of continuous use and supply a toilet and a sink that are off grid. Suction head of my setup is about 2 feet and the other end head is about 10 feet, no issues at all, pressure is great and the auto shut off works flawlessly. Mine is powered by a small battery bank of about 50amps that is connected to a wind generator so is completely off grid. If you want a quiet, powerful, easy to install, great quality 12 volts pump; look no further this is the one you need!!!
Review: Good value price tag for a comprehensive 12v pump Seaflo appears to continue to increase product range and quality year upon year, fair play.

## Features

- Continuous duty and On-demand use. Self priming and run dry safe.
- Internal bypass technology reduces cycling.
- 16AWG,9.4" long Leads. 13mm (1/2") MNPT threaded connections, with adaptors to 13mm hose barb
- 2 Year Warranty
- Meets or exceeds RoHS, SGS, and ISO standards

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01CQ7DD0S |
| ASIN  | B01CQ7DD0S |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #16,741 in Sporting Goods ( See Top 100 in Sporting Goods ) #13 in Boat Plumbing |
| Color | Orange |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,081) |
| Customer reviews | 4.4 4.4 out of 5 stars (2,081) |
| Date First Available | 28 May 2016 |
| Date First Available  | 28 May 2016 |
| Flow Rate | 3 Gallons Per Minute |
| Included components | 51S01 Filter, 51F01 Fitting |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 2.18 Kilograms |
| Item model number | SFDP1-030-055-42 |
| Item model number  | SFDP1-030-055-42 |
| Manufacturer | SEAFLO |
| Manufacturer  | SEAFLO |
| Material | Polypropylene (PP), Stainless Steel |
| Part number | SFDP1-030-055-42 |
| Power source type | Corded Electric |
| Product Dimensions | 20.24 x 12.5 x 11.1 cm; 2.18 kg |
| Product Dimensions  | 20.24 x 12.5 x 11.1 cm; 2.18 kg |
| Size | 12 Volts |
| Style | Diaphragm |
| Voltage | 12 Volts (DC) |

## Product Details

- **Brand:** SEAFLO
- **Colour:** Orange
- **Material:** Polypropylene (PP), Stainless Steel
- **Product dimensions:** 20.2L x 12.5W x 11.1H centimeters
- **Style:** Diaphragm

## Images

![Seaflo 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts) - Image 1](https://m.media-amazon.com/images/I/71GeYf5nuCL.jpg)

## Questions & Answers

**Q: Lousy house pressure, if I connect outlet of garden faucet to inlet of this pump will I get better outlet pressure to drive an impact type sprinkler?**
A: No it will not do anything for you... This is also 12V not 110 so maybe you should look into your houses old plumbing or contact city about your low water pressure

**Q: Automatic shut off?**
A: Yes it has a pressure switch that shuts it off when you shut the flow of water off

**Q: What is the power usage for this motor? Amp hours would be best, but pretty much any measure would be helpful.**
A: This is a 12V DC water pressure pump. The max amperage draw is 7.5 Amps. All technical specifications on the pump can be found here: http://seaflo.com/en-us/product/detail/609.html

**Q: What is the wattage need when using a power supply**
A: On the placard for the product that I bought, as well as in the product specs, the amperage is listed as 3.5A, with a maximum of 7.5A(presumably when the pump starts). Ohm’s law states that P=VI, so this yields an average of 12V*3.5A = 42W with a worst case of 12V*7.5A=90W.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***C on 19 July 2025*

Excellent product. Super quiet, very easy to install, perfect fit for my setup, very well made. It comes with a rubber base to absorb vibrations which makes it quieter than it already is. I’ve been using it daily for about a week now without any issues. My daily use is basically to water my garden which takers about 30 minutes of continuous use and supply a toilet and a sink that are off grid. Suction head of my setup is about 2 feet and the other end head is about 10 feet, no issues at all, pressure is great and the auto shut off works flawlessly. Mine is powered by a small battery bank of about 50amps that is connected to a wind generator so is completely off grid. If you want a quiet, powerful, easy to install, great quality 12 volts pump; look no further this is the one you need!!!

### ⭐⭐⭐⭐⭐ Review
*by D***O on 13 January 2024*

Good value price tag for a comprehensive 12v pump Seaflo appears to continue to increase product range and quality year upon year, fair play.

### ⭐⭐⭐⭐⭐ Review
*by C***A on 18 November 2023*

Ja det är vad jag planerat, för mitt kök på landet, bra tryck och lätt ljud, slutar när kranen stängs. Jag giltig. Carina

## Frequently Bought Together

- SEAFLO 42 Series 12V 3.0 GPM 55PSI Continuous Duty Diaphragm Pump with Bypass for Reduced Cycling, Fresh/Salt Water, 4-Year Warranty, UL & CSA Certified, Self-Priming for Marine, RV, Off-Grid, Boats
- SEAFLO Accumulator Tank Water Pump Flow Control with Internal Bladder - 125 PSI, 23.5 oz (0.75 L) | Reduces Pump Cycling and Smooths Water Flow for Marine, RV, and Off-Grid Systems

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-25*