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Overfill Prevention Devices
Overfill Prevention Devices
EWFM offer two different types of overfill prevention devices. Both of these have been designed to give reliable and safe operation for your top or bottom loading arm during the filling process. The two types we have are the model 2794 pneumatic overflow alarm and the model 3013 Pneumatic overflow shut-off.
Model 2794 – Pneumatic overflow alarm
The model 2794 has a sensing tube which is installed on the drop pipe of the top loader, the depth to be specified by the client. When the sensing tube is submerged, the back-pressure opens or closes an electric contact.
Pressure: 3/5 Bar
Air Consumption: 1.5 nl./min
Model 3013 – Pneumatic overflow shut-off
This system is similar to the 2794 Model. In this case, the loading valve, pneumatically operated by a spring return actuator, closes when the sensing tube is submerged. A microswitch can also be used for this operation.
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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