Flow switch with G1/2 threaded interface that detects water flow precisely and triggers an automatic shut-off to protect pumps from dry running. Key benefits Prevents pump damage: instantly cuts power when flow stops or drops below the set threshold, avoiding dry-run conditions and costly repairs. Reliable sealing: corrosion-resistant G1/2 port and leakproof design maintain pressure integrity in liquid systems. Durable construction: ABS body resists impact and chemical exposure for long-term use in water systems. Accurate performance: precision flow detection ensures timely activation of circuit protections for consistent operation. Easy integration: standard G1/2 threaded interface fits common fittings and piping used in HVAC, irrigation, and industrial systems. Important attributes Function: detects fluid flow and provides an automatic shut-off/circuit protection signal when flow is absent or abnormal. Thread size/compatibility: G1/2 threaded connections for straightforward installation to standard plumbing and pump lines. Material: ABS housing with corrosion-resistant G1/2 port for reliable sealing and resistance to common water corrosion. Media: suitable for liquid media including cold and hot water systems. Performance: designed for accurate, near-instant activation to protect pumps and downstream equipment. Practical applications HVAC systems: monitors circulation in boilers and chillers to shut down pumps if flow fails, protecting heat exchangers and pumps. Hydroponics and irrigation: prevents pump burnout in nutrient or irrigation lines by stopping pumps immediately when flow stops. Solar heating and factory machinery: maintains safe operation in solar thermal loops and industrial water circuits by detecting flow anomalies and initiating shutoff. Installation notes Use appropriate sealing tape or gasket on the G1/2 threaded connection to ensure leakproof installation. Verify compatibility with system pressure and temperature ranges of your application before installation. Mount in-line where reliable flow measurement is required and where the switch can be accessed for inspection. This flow switch is a practical, durable choice for protecting pumps and maintaining reliable flow control in water-dependent systems.