Check valve

Anti-Syphon Check Valves(Injection Valve) Prevents overfeeding and siphoning phenomenon. Also has a check valve function. This accessory not only prevents the overfeeding phenomenon and the siphoning phenomenon but also has a check valve function that prevents the liquid from being discharged from the main pipe. When injecting chemicals into a boiler pipe, if the boiler stops and the temperature drops, a negative pressure (a vacuum) develops within the boiler. This causes the chemical to be suctioned even when the pump is stopped. An anti-siphon check valve applies a back pressure slightly higher than 0.1 MPa to prevent the chemical from being suctioned.