Check Valve

We design and manufacture all products in strict accordance with international and domestic technical standards, including GB, CB, JB, JIS, API, DIN, CBM and customized drawings. Up to now, our product portfolio covers more than 200 series and over 2,000 specifications, with a size range from DN6 to DN2900 and a pressure rating from PN0.1MPa to 80MPa, fully satisfying diversified application scenarios in shipbuilding, power stations, petrochemicals, desulfurization systems and ballast water treatment. Our core product range is extensive and professional, mainly including marine butterfly valves, globe valves, gate valves, ball valves, needle valves, control valves, throttle valves, plug valves, check valves, safety valves, pressure reducing valves, self-closing valves, quick-closing valves, globe-check valves, drain valves, cock valves, mud tanks, sea water valves, sea water filters, oil filters, wave-proof valves, air caps, audible self-closing valves, water control valves, marine valves, as well as high-temperature and high-pressure power station valves. We are a specialized manufacturer supporting desulfurization towers and ballast tank systems, providing tailored fluid control solutions for marine and industrial engineering. We use a wide selection of high-grade body materials, such as carbon steel, cast iron, stainless steel, low-temperature steel, bronze, brass, forged steel, alloy steel and duplex stainless steel. The sealing surfaces are made of copper alloy, carburized steel, hard alloy, rubber and plastic, duplex stainless steel, PTFE and other soft/hard sealing materials, which can adapt to chemicals, seawater, oil, steam and various special media, ensuring excellent sealing performance and long service life. Our products are certified by world-leading classification societies, covering CCS (China), GL (Germany), LR (UK), DNV (Norway), BV (France), Rina (Italy), ABS (USA), NK (Japan) and KR (South Korea), which are widely recognized and trusted in the global shipbuilding and marine engineering industries. We provide complete factory approval and product certification documents to meet the strict inspection and access requirements of international shipyards and shipowners. Adhering to the principle of customer-centricity, we take meeting customer demands as our top priority, keep improving production technology and product quality, and strive to build high-standard, high-reliability valve products. We provide 7×24 full-time service, support non-standard customization and sample processing, and deliver efficient pre-sales consultation, stable in-sales support and thoughtful after-sales service. With professional technology, complete qualifications, rich product lines and strict quality control, Haizhibang Ximen Manufacturing has become a reliable partner in the global valve and marine equipment industry. We are committed to providing first-class products and services, and sincerely look forward to establishing long-term, win-win cooperation with customers worldwide to create greater value for marine engineering, industrial construction and fluid control systems.