LQH Technology's butterfly check valve combines efficient flow control with reliable backflow prevention in a compact design. This valve type features a swinging disc mechanism that provides quick response to flow reversal, ensuring minimal pressure drop. Ideal for HVAC, water treatment, and industrial piping systems, these valves handle water, air, and mild corrosive fluids. The corrosion-resistant construction guarantees durability while the streamlined body enables easy installation in space-constrained applications.