These pumps are also self-priming if there is no back pressure applied! NOTE: For these AC-driven pumps solenoids and springs are perfected to work in concert to ensure uninterrupted flow of fluid at maximum pressure. Please note, that AC frequency is an important parameter, as well as AC voltage! GENERAL PRINCIPLE OF OPERATION (see the last image). The piston (5) is moved by the electromagnetic field generated by the single wave diode rectified current flowing through the coil (4).
Each current pulse moves the piston against the pressure spring (3). This movement by reducing the volume in the suction chamber opens the valve (6) set in the piston to let the liquid run into the pressure side. When the current pulse dies the pressure spring pushes back the piston toward the pressure side. The increase of pressure closes the piston valve and the liquid flows through the. (7) set in the pressure connection (8) and into the pressure pipe. This movement creates a low pressure in the suction chamber which opens the valve (2) set in the suction connection (1).The liquid is sucked into the pump and the cycle starts again, 60 times per second (at 60 Hz). The piston size and the length of its displacement define the flow rate.
The pressure limits itself automatically. The pump will run without damage when the liquid flow is stopped momentarily. Are powered with 120 VAC or 50/60 HZ.
And bushings guarantee minimum wear and long life. By offering many combinations of materials, our pumps will handle a broad range of media and temperatures.
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