Flow is one of the crucial parameters measured in process industries and water treatmentplants, amongst other applications. For example, in water treatment plants where filtrationequipment is cleaned periodically, a predetermined volume of water has to be pumpedthrough filters. The GPM(Gallons per minute) value is multiplied by the duration of thecleaning process to measure the amount of water used for cleaning.

The hand-operating pressure pump is a kind of pneumatic type hand-operating pressure
source. It is designed to calibrate the pressure measuring instruments installed on the
industrial working site and various pressure instruments in a control room. It can also provide
the pressure source for any calibrating work in a factory. The hand operating pressure pump
can calibrate pressure transmitters, pressure sensors and any kind of pressure instruments
within the range of 0~ 230psi. The hand-operating pressure pump is portable and light. It has
a wide range of temperature and ease of pumping up and operation.