Marine quick-closing valve GB/T5744-93 drive method; pneumatic AS type, AQ type, ASS type, AQS type. Manual; BS type, BSS type, BQ type, BQSS type. Applicable medium; lubricating oil, fuel oil. Nominal pressure; PN0.25 MPa. Nominal diameter; DN20-DN150. Cylinder working pressure; PN0.3-0.7 MPa. Valve body, valve cover; cast steel. Valve disc; carbon steel. Valve stem piston; stainless steel. Cylinder; stainless steel.
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Marine weight-type external thread quick-closing valve GB1850-84, nominal diameter; DN10-DN32, applicable medium; fuel oil. Valve body, valve cover; carbon steel. Valve disc; high-quality carbon steel. Valve stem; stainless steel. Handle; ductile iron.


Shanghai Yunlong Marine Valve Co., Ltd. is a professional manufacturer of marine valves in various materials. The company integrates research, development, production, and sales as a large valve production enterprise. It possesses design and manufacturing capabilities, excellent production and testing equipment, a high-quality workforce, and a comprehensive after-sales service system. The company has passed the ISO9001-2001 quality system certification and the factory approval of China's "CCS" classification society, ensuring stable and reliable product quality. Products are widely used in shipbuilding, petroleum, chemical, metallurgy, electric power, environmental protection, large-scale construction, and other industries. The company mainly follows national standards (GB), ministry standards (CB), foreign trade standards (CBM), and German standards to produce various marine valves made of cast copper, cast iron, cast steel, stainless steel, etc. Main products include: various models of marine butterfly valves, wafer-type butterfly valves, flanged butterfly valves, marine globe valves, marine gate valves, marine globe check valves, marine filters, marine steam traps, marine safety valves, air caps, marine check valves, etc. Products are mainly sold to major shipyards and shipping companies. The company adheres to the market as the core and integrity as the foundation, gradually increasing the market share of its products. We will adhere to the principle of "mutual benefit and integrity," sincerely welcoming new and old customers and business partners to visit, inspect, discuss cooperation, and create a better future together. To do better, we are always striving!