Submersible pump















Installtion Instruction




Mechanical leak detector








Compact structure, easy installation and maintenance, low noise, smooth operation, long service life.Built-in check valve, switching valve, safety valve(relief valve) and vacuum valve. The submersible pump can take several nozzles to work at the same time. It is applicable to gasoline, kerosene, diesel, etc.The submersible pump can avoid oil pumping problem caused by oil gasification. The distance of oil delivery is farther than self sucking pumps’

Technical performance


Model RT-STP150A RT-STP150
Power 1.5P
Motor Rated Speed 2820r/min
Flow Range 250Lmin
Working Pressure 0.22MPa
Environmental temperature -25℃~+55℃
Noise Level ≤68dB
Rated Voltage AC220V AC380V
Rated Current 220V-9.5A 380V-0.35A
Ex-proof Class Exd IIbT4
Working Pressure Difference >34KPa
Fixationthread NPT 4''
Inlet NPT1  1/2''
Outlet NPT2''






























With the growing consciousness of human environmental protection, relevant environmental protection rules and regulations are made one by one around the world. In order to observe the local environmental protection rules and regulations, and to avoid pollution from oil leakage, the leak detector is developed and put into use widely.

Under the transmission pressure at 1.4-3.5kPa, diaphragm type of RT-MLD mechanical leak detector is a selectable device for submersible pump to monitor the oil leakage in the pipeline. The leak detector can automatically carry out the supervision to the flow rate over 11.4L/min or pressure less than 0.6kPa of the pipeline. If leakage existing, it will limit the flow rate at 11.4L/min through closing the inner piston valve, which will let the users know that there is oil leakage in the pipeline.



»  For Gasoline, Kerosene, Diesel;
»  The leak detector will control the output of oil in time, when the oil leakage in the pipeline is no less than 11.4L/min;
»  The leak detector will delay to open in 2-3 seconds, when the oil leakage is less than 11.4L/min;
»  RT-MLD-50A mechanical leak detector can keep maximum flow rate while several nozzles are working at the same time.










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