✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Effortless Seaflo 33-series Automatic Demand Diaphragm Pump - Ships Same Day [J3Mgi7GQ]

$23.99 $76.99 -69%

33 AC Series Diaphragm Water PumpsThe SEAFLO 33 AC series pumps are capable of continuous heavy duty and extreme workloads. Matched with high performance motor, the 33?AC?series has extreme chemical capability and goes beyond the normal call of duty

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Effortless Seaflo 33-series Automatic Demand Diaphragm Pump - Ships Same Day [J3Mgi7GQ]

33 AC Series Diaphragm Water Pumps

The SEAFLO 33 AC series pumps are capable of continuous heavy duty and extreme workloads. Matched with high performance motor, the 33?AC?series has extreme chemical capability and goes beyond the normal call of duty with many other additives as well. This 3-chamber diaphragm pump provides up to 3.0 gallons per minute and is capable of self-priming up to 6 vertical feet, and can run dry without damage. They are easy to install, service and winterize. Seaflo also offers a variety of easy connect fittings and filters.


FEATURES & BENEFITS

1. Adjustable pressure switch from 17-600psi for OEM when needed.

2. Threaded connections with multiple fittings allow connection to any outlet.

3. Quite operation. Motor sounds not louder than your room fan running.

4. Thermal overload protected automatically stops motor should it overheat due to overload, with automatic restart feature.

5. Semi-rigid rubber feet for noise reduction from vibration.

6. Compact design and heavy-duty demand switch.

7. Can run dry.

TYPICAL APPLICATIONS

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

PUMP
Type 3 Chamber positive displacement diaphragm pump, self priming, capable of being run dry
Control Type Pressure switch
Max Recommended Temperature 60° C(140° F)
Priming Capabilities 6 feet (1.8 m) suction lift
Re-start Pressure

Shut-off Pressure 50 PSI : 35 PSI ±5 PSI (±0.3 bar)

Inlet/Outlet Ports 1/2"-14 MNPT
Weight 4.2 lbs (1.9 kg)

 

MOTOR
Leads 16 AWG, 13" (33 cm) long with 2-Pin connector/Leads
Duty Cycle Intermittent
Max.Amp Draw 11.0 A
Fuse 16.5 A


STANDARD PUMP CONFIGURATIONS

Model Voltage

Open Flow

(GPM/LPM)

Control Type

Max Draw

Shut-off Pressure

(PSI/BAR)

Valves Diaphragm Ports

Wire Connections

SFDPA1-030-050-33

115V 3.0 / 11.6 Pressure Switch 0.9 A 50 / 3.4 EPDM Santoprene 1/2" MNPT 2-Pin/Leads

SFDPA2-030-050-33

230V 3.0 / 11.6 Pressure Switch 0.5 A 50 / 3.4 EPDM Santoprene 1/2" MNPT 2-Pin/Leads


PERFORMANCE

3.0GPM

PRESSURE FLOW CURRENT
PSI BAR GPM LPM AC 115V

AC 115V

OPEN 0.20 3.00 11.85 0.50 0.21
10 0.70 2.81 10.85 0.55 0.25
20 1.40 2.42 9.34 0.64 0.27
30 2.10 2.09 8.06 0.78 0.32
40 2.80 1.61 6.21 0.83 0.40
50 3.40 OFF OFF OFF OFF



HEAT RISE

DIMENSIONS

PRODUCT DETAILS

Key Description Quantity
A Pump Head Assembly 1
B Valve Assembly 1
C Diaphragm Assembly 1
D Motor Assembly 1
1 Pressure switch 1
2 Diaphragm of Pressure Switch 1
3 Pump Head 1
4 Diaphragm 1
5 Rubber Feet 1
6 Motor 1

 

APPLICATION

SHIPPING INFORMATION

 

Unit Pump Weight

4.24 lbs (1.92 kg)

Selling Unit Size (L x W x H)

8.5"x 5.63"x 5.12“
(26.4 x 14.3 x 13 cm)

Selling Unit Weight

4.77 lbs (2.16 kg)

 

CAUTION

Please make sure correct wiring, otherwise it will damage the pump (The red cable should be connected with the positive pole, and the black cable should be connected to the negative pole).

What Our Customers Say

January 27, 2026

Absolutely no complaints!

This product is a great example of what a quality item should be.

- Alora F..

January 27, 2026

Absolutely no complaints!

The quality is outstanding and the product is very easy to handle.

- Kailani V..

January 27, 2026

Absolutely no complaints!

A well-designed product that makes a difference.

- Gabriella B..

Write a Review

You Might Also Like

Discover more great products from our collection.

Bannington Bowl

Bannington Bowl

(576)
$19.99 $63.99 -69%
MONACO DARK GREY END TABLE

MONACO DARK GREY END TABLE

(542)
$60.99 $195.99 -69%
Wallace Bench

Wallace Bench

(80)
$47.99 $153.99 -69%
Mesa Auxiliar Barrymore

Mesa Auxiliar Barrymore

(728)
$56.99 $182.99 -69%
RAP1653 - Air Dump valve

RAP1653 - Air Dump valve

(492)
$44.99 $143.99 -69%

Copyright 2026 © technovaprecision.com

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY