UPVC Plastic Flanged Back Pressure Safety Valve, Spring Anti-corrosion Back Pressure Valve For Chemical Acid & Alkali Pipeline Pressure Stabilization & Relief

UPVC flanged back pressure safety valve with UPVC engineering plastic body and built-in spring structure, flanged connection. It has dual functions of back pressure maintenance and overpressure relief, can prevent siphon in metering pump pipeline and stabilize outlet pressure. When pipeline pressure exceeds set pressure, the valve automatically opens for pressure relief to protect pump and pipeline. It is resistant to strong acid and alkali, suitable for highly corrosive chemical dosing system, and the set pressure can be adjusted on site.