

Seaflo 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)
About this item
- [ SPECIFICATIONS ]: Model SFDP1-030-055-42 | Voltage 12V | 3.0 GPM (11.3 LPM) | 55 PSI | Max Draw 7.0A | Self-Priming 6 ft | EPDM Valves | Santoprene Diaphragm | Ports 1/2"-14 MNPT | 4-Year Warranty
- [ 4-YEAR LIMITED WARRANTY ]: Backed by SEAFLO’s industry-leading 4-Year Warranty, ensuring durability, confidence, and long-term protection for freshwater systems in marine, RV, and off-grid installations.
- [ NSF UL CSA CERTIFIED FOR POTABLE WATER ]: Fully certified to NSF/ANSI/CAN 61 & 372, NSF 24, UL 778, and CSA C22.2 No.108, ensuring compliance for safe potable water use in RV, marine, and off-grid pressurized water systems.
- [ HIGH-PERFORMANCE CONTINUOUS-DUTY OPERATION ]: Built for extended runtime, this pump delivers consistent 3.0 GPM flow and 55 PSI pressure, making it ideal for marine, RV, and off-grid systems that demand long-lasting reliability.
- [ SELF-PRIMING WITH RUN-DRY PROTECTION ]: Capable of self-priming up to 6 ft and safely running dry, the pump offers dependable performance during tank changes, low-water events, or installations requiring elevated mounting locations.
- [ INTERNAL BYPASS FOR SMOOTH QUIET FLOW ]: Integrated bypass technology reduces short cycling and pressure fluctuations, producing smoother water delivery and quieter overall operation in on-demand freshwater systems.
- [ DURABLE AND QUIET DESIGN ]: Santoprene diaphragm and EPDM valves provide long-term resistance to wear, while the rubber mounting base reduces vibration and noise for smoother, quieter operation in tight spaces.
- [ EASY INSTALLATION WITH STANDARD MOUNTING PATTERN ]: Features an industry-standard mount footprint and 1/2"-14 MNPT ports, allowing simple integration with common plumbing layouts in RVs, boats, and tiny home water systems.
- [ VERSATILE APPLICATIONS ACROSS MULTIPLE SYSTEMS ]: Ideal for pressurized water systems in RVs, boats, caravans, cabins, and agricultural setups, handling multiple fixtures with reliable performance and low maintenance needs.
Product description
SEAFLO 42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V 3.0GPM 55PSI Meet 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 APPLICATIONS Marine,RV,Agricultural Spraying,General Industrial,Filtration,Beverage Processing,Solar Water System. DETAILS Type: 4 Chamber positive displacement diaphragm pump, self priming, capable of being run dry Control Type: Pressure switch & By pass control Max Recommended Temperature: 60° C(140° F) Priming Capabilities: 6 feet (1.8 m) suction lift Re-start Pressure: Shut-off Pressure 55 PSI : 41 PSI ±5 PSI (±0.3 bar) Inlet/Outlet Ports: 1/2"-14 MNPT Weight: 4.0 lbs (1.9 kg) MOTOR Leads: 16 AWG, 9.4" (24 cm) long with 2-Pin connector / Leads Duty Cycle: Intermittent Max.Amp Draw: 7.5 A Fuse: 11.3 A STANDARD PUMP CONFIGURATIONS Model: SFDP1-030-055-42 Open Flow(GPM/LPM): 3.0 / 11.3 Voltage: 12 V Control Type: switch & By pass Max Draw: 7.5 A Shut-off Pressure(PSI/BAR): 55 / 3.8 Valves: EPDM Diaphragm: Santoprene Ports: 1/2"-14 MNPT Wire Connections: 2-Pin/Leads
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
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