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Drop Pipe Contact Switch

Drop Pipe Contact Switch

This Drop Pipe Contact Switch is installed to allow the loading arm to load the tanker or rail car. The switch is mounted on the top of the drop tube of a Loading Arm and then it runs through the bore and under the T-deflector. During the filling process, when the drop tube reaches and presses on the bottom of the tank, the mechanical switch then gives a signal to allow loading to begin. These are for use with our range of top loading arms only.

This Switch is used to ensure the arm is fully lowered into the tanker before the loading process begins.


We can offer loading arms equipped with electrical components to signal many different positions or conditions. Signals can be given with the use of either electro-mechanical microswitches or proximity switches. Both types of switches have ATEX certification.

For other loading arm signal switches, please head to the bottom of our loading arm page where you can find a range valves, accessories and signal switches which are all compatible with our loading arms.

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