--- product_id: 205500056 title: "42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)" brand: "seaflo" price: "771.93 DT" currency: TND in_stock: true reviews_count: 13 category: "Seaflo" url: https://www.desertcart.tn/products/205500056-42-series-diaphragm-pump-with-bypass-for-reduced-cycling-12v store_origin: TN region: Tunisia --- # 12V/24V dual voltage versatility 3.0 GPM high flow rate Bypass tech reduces cycling 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts) **Brand:** seaflo **Price:** 771.93 DT **Availability:** ✅ In Stock ## Summary > 💧 Pump up your efficiency with Seaflo’s smart, powerful flow! ## Quick Answers - **What is this?** 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts) by seaflo - **How much does it cost?** 771.93 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/205500056-42-series-diaphragm-pump-with-bypass-for-reduced-cycling-12v) ## 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 Yet Mighty:** Designed for tight spaces without compromising power — ideal for modern, space-conscious setups. - • **Flow That Keeps Up:** Delivers a robust 3.0 gallons per minute, perfect for marine, RV, and industrial applications demanding steady water pressure. - • **Power Meets Precision:** Dual voltage (12V/24V) adapts seamlessly to your power needs, ensuring reliable performance anywhere. - • **Smart Cycling Control:** Internal bypass technology minimizes pump cycling, extending lifespan and reducing energy waste. - • **Built to Last & Certified:** Backed by a 2-year warranty and compliant with RoHS, SGS, and ISO standards for peace of mind. ## Overview The Seaflo 42 Series Diaphragm Pump is a compact, self-priming positive displacement pump delivering 3.0 GPM at 55 PSI. Featuring dual 12V/24V compatibility and an internal bypass to reduce cycling, it’s engineered for continuous duty and on-demand use. With durable materials, 1/2" MNPT threaded connections, and certifications including RoHS, SGS, and ISO, it’s a reliable choice for marine, RV, agricultural, and industrial water systems. ## 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: Extremely quiet ...top notch - Replaced my Jabsco pump which was very noisy for this seaflo 42 and what a difference fantastic product and 20 times quieter...I also changed the accumulator which together work perfectly 👌 Review: Seaflo pump - Good ## 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 | | Best Sellers Rank | 29,150 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 12 in Boat Water Pressure Pumps | | Brand | Seaflo | | Colour | Orange | | Customer Reviews | 4.4 out of 5 stars 2,195 Reviews | | EU Spare Part Availability Duration | 4 Years | | Flow Rate | 3 Gallons Per Minute | | Included Components | 51S01 Filter, 51F01 Fitting | | Item Dimensions L x W x H | 20.2L x 12.5W x 11.1H centimetres | | Item Weight | 4.81 Pounds | | Manufacturer | SEAFLO | | Material | Pump head: nylon. Pump head cover: PPS. Motor housing: polypropylene. Valves/seals: EPDM. Diaphragm: Santoprene Material Pump head: nylon. Pump head cover: PPS. Motor housing: polypropylene. Valves/seals: EPDM. Diaphragm: Santoprene See more | | Maximum Lifting Height | 6 Feet | | Model Number | SFDP1-030-055-42 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | SFDP1-030-055-42 | | Power source | Adaptors | | Product Style | Diaphragm | | Product dimensions | 20.2L x 12.5W x 11.1H centimetres | | Style | Diaphragm | | UPC | 647336945584 715934427631 | | Unit Count | 1.0 count | | Usage | Marine, RV, Agricultural Spraying, General Industrial, Filtration, Beverage Processing, Solar Water System, Homeowner, Traveling, Construction | | Voltage | 12 Volts (DC) | ## Product Details - **Brand:** Seaflo - **Colour:** Orange - **Item weight:** 4.81 Pounds - **Maximum flow rate:** 3 Gallons Per Minute - **Maximum lifting height:** 6 Feet - **Power source:** Adaptors - **Product dimensions:** 20.2L x 12.5W x 11.1H centimetres - **Style:** Diaphragm - **Voltage:** 12 Volts (DC) ## Images ![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/71BBc2artAL.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 ### ⭐⭐⭐⭐⭐ Extremely quiet ...top notch *by S***E on 13 March 2026* Replaced my Jabsco pump which was very noisy for this seaflo 42 and what a difference fantastic product and 20 times quieter...I also changed the accumulator which together work perfectly 👌 ### ⭐⭐⭐⭐⭐ Seaflo pump *by M***O on 12 June 2026* Good ### ⭐⭐⭐⭐⭐ Fantastic *by L***S on 4 June 2024* Upgraded the noisy shurflo 1.1bar pressure pump in our touring caravan to the seaflo 42 series pump and added an accumulator tank Had to rewire the pressure switch feeds on the pump to suit the wires in the caravan for it to function correctly in my setup, There's no issues with the product atoll, Just had to be wired to work correctly. Fantastic value for money Low noise and Fantastic pressure ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/205500056-42-series-diaphragm-pump-with-bypass-for-reduced-cycling-12v](https://www.desertcart.tn/products/205500056-42-series-diaphragm-pump-with-bypass-for-reduced-cycling-12v) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-02*