Founded in 1986 in Wenzhou, China, Topper Valve Manufacturing Co., Ltd covers 25,000 m² with two factories, 380+ staff, and 300+ advanced facilities. We produce gate, globe, check, ball valves, and Y-strainers in carbon, alloy, and stainless steel to ANSI, API, DIN, GOST, and GB standards, serving industries like oil, gas, chemical, shipbuilding, power, and pipelines.

Our valves range from Class 150–2500 LB (PN6–PN420) and NPS 1/2–48 inches, with manual, gearbox, chain wheel, pneumatic, and electric operations and flanged, BW, SW, NPT, and wafer connections. Materials include a wide selection of castings (ASTM A216/A352/A351/A217, Monel) and forgings (ASTM A105/A350/A182, Inconel) to meet diverse needs.