SEAFLO 33 Series 12v Automatic Demand Diaphragm Pump

Original price was: £130.00.Current price is: £89.99.

SKU: HYDP1-030-045-33 Category:
SEAFLO 33 series DC diaphragm pump 12v 3.0-13.2 l/m 17-60 psi

The 33-Series is our general-duty on-demand positive displacement pump. It provides reliable performance in high water flow, moderate pressure applications. This 3-chamber diaphragm pump provides up to 3.0 gallons per minute and is capable of self-priming up to 6vertical feet, and can run dry without damage. Serves 3 or more 1/2” (13 mm) outlets. This automatic demand water system pump has a built-in pressure switch, which automatically starts and stops when the faucet is opened and closed. They’re easy to install, service and winterize.


-On-demand use
-Capable of supplying1-2 fixtures
-Adjustable pressure switch
-Continuous Duty & Run dry safe – Self priming
-16AWG,4.5"long Leads
-2 Year Warranty
– Meets or exceeds RoHS, SGS, and ISO standards


Marine, RV, Agricultural Spraying, General Industrial, Filtration, Beverage Processing, Solar Water System.

Type3 Chamber positive displacement diaphragm pump, self priming, capable of being run dry
Control TypePressure switch
Max Recommended Temperature60° C(140° F)
Priming Capabilities6 feet (1.8 m) suction lift
Re-start PressureShut-off Pressure 45 PSI : 35 PSI ±5 PSI (±0.3 bar)
Inlet/Outlet Ports1/2″-14 MNPT
Weight4.2 lbs (1.9 kg)
Leads16 AWG, 13″ (33 cm) long with 2-Pin connector / Leads
Duty CycleIntermittent
Max.Amp Draw8.0 A
Fuse12.0 A


ModelVoltageOpen Flow
Control TypeMax DrawShut-off Pressure
ValvesDiaphragmPortsWire Connections
SFDP1-030-045-3312V3.0 / 11.3Switch8.0A45 / 3.1EPDMSantoprene1/2″-14 MNPT2-Pin/Leads
SFDP2-030-045-3324V3.0 / 11.3Switch4.0A45 / 3.1EPDMSantoprene1/2″-14 MNPT2-Pin/Leads
SFDP1-028-045-3312V2.8 / 10.6Switch6.0A45 / 3.1EPDMSantoprene1/2″-14 MNPT2-Pin/Leads
SFDP2-028-045-3324V2.8 / 10.6Switch3.5A45 / 3.1EPDMSantoprene1/2″-14 MNPT2-Pin/Leads
SFDPA1-030-045-33115V3.0 / 11.3Switch1.6A45 / 3.1EPDMSantoprene1/2″-14 MNPTLeads/Plug
SFDPA2-030-045-33220V3.0 / 11.3Switch0.8A45 / 3.1EPDMSantoprene1/2″-14 MNPTLeads/Plug

Weight2 kg

Discount Offers


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Get 5% discount
Conditions to be met:
i. If Coupon Code equal to SUBSCRIPTION5
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