Pump Pressure Switch Adjustable Automatic Self Priming Water Pump G3/8 Female 220240V Feature:1. Corrosion-resistant material: the bottom of the switch is zinc alloy material, low-quality products with low market price are plastic, zinc alloy material is durable, corrosion-resistant, high-pressure resistant, no seepage or leakage, etc.2. Stable: double contact clutch is made of silver, the contact is plane contact, more stable than single circular contact3. Stable and durable: ensure the switch strength, has stable and reliable quality, long service life, avoid frequent start 4. Pressure control: the pump pressure can be adjusted through the pump pressure switch, you can set the self-adaptive pressure according to the work demand5. Wide application: suitable for self-priming pump, jet pump, garden pump, clean water pump etc. to achieve unmanned control Specification: Item type: pump pressure switch Material: ABS and zinc alloy Rated voltage: 220-240V Maximum current: 16A Pressure range: 2.2kg /cm sup2;-3.0kg/cm sup2;3/8 female thread diameter: approx. 15mm/0.59in Application: self-priming pump, jet pump, garden pump, clean water pump, etc. Features: according to the change of pipeline pressure, automatically opens and closes the pump to achieve unmanned control Package List: 1 x Pump Pressure Switch Note: Do not use outside the current and voltage range. How to use: 1. Turn on the tap frequently, increase the pressure and turn the knob to the plus sign for 1-3 turns.2. Turn off the tap water, the pump does not stop, reduce the pressure, turn the knob to minus 1 - 3 turns.