Aquatec 550 AC Diaphragm Pump

The Aquatec 550 AC diaphragm pump is designed for drinking water and beverage transfer in industrial applications and OEM systems. The 5-chamber design ensures reliable operation, self-priming capability, and dry-run performance.

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Applications

The 550 AC Series is designed for drinking water and beverage transfer applications where reliability, compact design, and stable pressure are required.

• Drinking water distribution systems
• Beverage and vending systems
• Reverse osmosis (RO) systems
• OEM water treatment systems
• Low-pressure fluid transfer

Technical specifications

Pump type

5-chamber diaphragm pump, self-priming, dry-run capable

Motor type

230 VAC, permanent magnet, totally enclosed, non-ventilated

Number of chambers

5

Pump body material

Polypropylene

Valve material

EPDM

Diaphragm material

Santoprene

Thermal protection

Integrated thermal protection with motor temperature limit at 63°C

Connections

Quick disconnect fittings or 1/2” female NPT ports

Duty cycle

Refer to Heat Rise graph for operating limits

Values may vary depending on configuration and operating conditions.

Performance

Performance curves

Pressure (bar)	Flow 55X0 (L/min)	Current 55X0 (A)	Flow 55X1 (L/min)	Current 55X1 (A)	Flow 55X2 (L/min)	Current 55X2 (A)	Flow 55X3 (L/min)	Current 55X3 (A)
4.8	4.16	0.52	6.06	0.63	7.57	0.78	8.52	0.88
4.1	4.73	0.50	6.63	0.60	8.33	0.72	9.27	0.80
3.4	5.68	0.47	7.57	0.56	9.08	0.67	9.84	0.75
2.8	6.63	0.45	8.52	0.50	9.84	0.62	10.60	0.69
2.1	7.95	0.41	9.27	0.47	10.60	0.55	12.11	0.60
1.4	8.90	0.35	10.22	0.40	12.30	0.46	13.63	0.52
0.7	9.84	0.29	11.36	0.34	14.19	0.37	16.09	0.41
0	11.36	0.22	13.25	0.27	16.09	0.31	17.03	0.36

Performance data are measured with flooded inlet (0 PSI), water temperature at 21°C, and 230 VAC power supply. Positive inlet pressure increases discharge pressure proportionally. Maximum inlet pressure: 60 PSI.

Thermal behavior (Heat Rise)

The Heat Rise graph shows the increase in motor surface temperature over time as a function of current draw.
The motor is equipped with an integrated thermal protector that automatically shuts off the pump when the motor surface temperature reaches approximately 63°C (145°F).
Continuous operation is possible within the defined current limits. At higher loads, the pump requires intermittent operation cycles to allow motor cooling.

Dimensional drawings

Dimensional drawings allow correct mechanical integration of the pump within the system. Dimensions are expressed in millimeters (mm).

Other products in the same series

• Aquatec 550 DC Diaphragm Pump
• Aquatec 5800 Series DC – Diaphragm Pump
• Aquatec 6800 Electric Diaphragm Pump
• Aquatec 8800 Electric Diaphragm Pump