Features HFS-20 Water flow switch applied to water treatment system, central air conditioning, water cooling units and other fields. The flow meter has the characteristics of high sensitivity and durability. Suitable for water, ethylene glycol and other liquids without corrosive effect on brass, phosphorus copper. Have no effect on sealing performance, G3/4 interface, HFS-20 water flow meter. Target type water flow switch structure adopts brass material, having long service life. Functionality: 1. HFS-20 Water flow switch applied to water treatment system, central air conditioning, water cooling units and other fields. 2. Suitable for water, ethylene glycol and other liquids without corrosive effect on brass, phosphorus copper. 3. Have no effect on sealing performance, G3/4 interface, HFS-20 water flow meter. 4. The flow meter has the characteristics of high sensitivity and durability. 5. Target type water flow switch structure adopts brass material, having long service life. Specification: Condition: 100% Brand New Item Type: Water Flow Switch Material: Brass Model No.: HFS - 20 Interface: G3/4in. Average temperature: 0-60 degrees Celsius Contact Life: 100,000 times Resistive load: AC220V 15A. Nominal pressure: 10bar Output mode: SPT Package list: 1 x switch. 3 x picks. Package List 1 x Switch 3 x Pick