As a leading China automatic recirculation valve factory, we manufacture high-performance 100 mm (4-inch, DN100) ARC valves designed for pump protection and efficient flow control. Our valves feature a carbon steel ASTM A105 body for superior strength and durability, combined with stainless steel 304 trim for enhanced corrosion resistance and long service life. Rated at Class 1500 LB (PN250), these valves ensure reliable operation under high pressure conditions. The RF flanged ends provide secure, leak-free connections, making them ideal for demanding applications in power plants, refineries, and chemical processing systems requiring precise automatic recirculation performance.