Low pressure switches adjustable with graduated knob. SPDT Contact. 6.3 x 0.8 faston electrical connection IP00. IP44 or IP65 electrical protection with protection cap supplied separately. Process Connections Threaded or Pipe. These pressure switches are used in many applications such as: water treatment, industrial washing machines and dishwashers, coffee machines, electro-medical equipment, textile industry. They can also be used for level control in non-pressurized tanks.