This product is a Parker pneumatic pressure regulating valve product represented by the company. It adopts a modular design with integrated ports and a sturdy, lightweight aluminum structure. It is equipped with a manifold type regulator, with pipeline pressure on both sides and front pressure output. The secondary suction and balance bracket ensures rapid response and accurate pressure adjustment, ensuring that the product flows out at a reasonable pressure according to design requirements. Widely used in the design of pneumatic control systems for products in the rail transit industry.