RFLH type high-performance pneumatic high-pressure cage-type control valve is a pressure-balanced control valve. It features a compact valve body structure with an S-shaped streamline fluid channel and a flow deflector around the valve cage to improve the fluid's balanced flow. The advantages include low pressure drop loss, high flow capacity, a wide adjustable range, good dynamic stability, low noise, minimal cavitation corrosion, and suitability for controlling high-pressure fluids.