This is a water pump pressure control switch for perfect pressure control The water pump pressure can be adjusted by this switch, you can adjust the pressure according to your needs. It is made of high quality materials, which are strong and durable. Using silver-plated electric shock, high current does not generate heat. Adopt high strength anti-fatigue spring, stable pressure. Imported rubber pressure diaphragm is adopted, which has a long service life and prevents water leakage. It is easy to install and can be used for a long time. < p>Suitable for most pumps, such as self-priming, jet, garden pumps, etc.