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XBY calibrator is developed for calibration of internal pressure gauges of pressurized cylinder fire extinguishers used by the numerous manufacturers and repair works. As a result, the pressure in the cylinder will be indicated on the gauge accurately, thereby making the detection of fire extinguisher more visual.

The calibrator is made up of two parts, inflation system and deflation system. It is characterized by safety, reliability, simple operation, high efficiency and great accuracy. It is an indispensable calibration device of fire extinguisher pressure gauges to manufacturers and repair works of fire control appliances.