... limit and machinery limit design,accurate position,avoid gear with switch. 3. Multi-angle assembling,easy to install. 4. Float ball ... conditions. 5.Good substitution for solenoid or pneumatic valve. 6. High protection class,can be worked in moist conditions. ... ,solar water heaters,washing machines,water heaters,industrial humidifier.6.Solar thermal,under-floor,rain water,irrigation,plumbing service, ...