Diaphragm pump combines the advantages of self-priming pump and chemical pump. Installed in a dry, well-ventilated location; pumps can not work in water. Using a variety of corrosion-resistant materials, self-priming, thermal protection, smooth operation, long-time continuous idling, long-time continuous load operation. Totally sealed, high stable pressure.Rubber bracket can absorb vibration from the pump when working.The shell is made of ABS plastic. When the water pressure is too high, pump will protect themselves and normal work, water pipes will not burst, it is safe.Pressure protection: pressure switch power protection. Pressure Switch Type Features: When the water turned off, it will automatically cut off power,the motor is stopped. After the water turned on, will automatically power on, motor running., Manufacturer: CCZRD