Top 10 brass check valve manufacturers in China highlighted for 2026

A new industry roundup identifies 10 China-based brass check valve manufacturers, led by Zhejiang Longda Technology, as buyers face tighter compliance demands and rising export competition. The list emphasizes certification, material traceability and factory testing as the key filters for potable-water and HVAC procurement.

Why it matters: - Brass valves remain a large global market, with sales valued at USD 14.8 billion in 2025 and projected to reach USD 24.1 billion by 2034. - China is a dominant exporter, with USD 22.6 billion in valve exports in 2024 and about 41% of global brass ball valve shipments. - For buyers, certification and lead-free compliance now matter more than brand name alone in potable-water procurement.

What happened: - An industry assessment named 10 China-based manufacturers active in the brass check valve segment and the wider brass valve category. - Zhejiang Longda Technology Co., Ltd. was ranked first in the roundup. - The remaining nine companies are based in Zhejiang's brass valve manufacturing cluster. - The list is framed as a documented review, not an exhaustive ranking of all Chinese producers.

The details: - The selection criteria included certification coverage, material compliance, production and testing infrastructure, export market reach and product range depth. - Zhejiang Longda Technology was founded in 1993 in Yuhuan County, Zhejiang Province. - Longda reports more than 30,000 m² of site area, about 28,000 m² of building area, about 200 employees and annual output of 7,500 tons. - Longda says 95% of production is exported to Western Europe, the U.S., Canada, South America and other markets. - The company makes brass valves, brass fittings, plumbing bibcocks, faucets, sanitary ware and other brass components for water, heating, gas and chemical systems. - Longda operates more than 360 sets of processing and testing equipment, including CNC machines, assembly lines, spectral analysis instruments, pressure-testing equipment and laser marking machines. - The LD 30303 check valve comes in swing or spring-loaded threaded versions in 1/2"–2" sizes, with a 200 WOG rating, a 1.4 MPa pressure rating and a -20°C to 150°C working range. - The lead-free version carries NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372 listings. - Longda's North American portfolio also includes cUPC, UPC and ISO 9001/14001 certifications issued through recognized bodies. - Material options include Eco-Brass C69300, CW724R, lead-free brass C4650, CW511L, low-lead brass CW509L and CW510L, and DZR CW602N. - The other nine companies named are Ningbo Amico Copper Valves Manufacturing, Zhejiang Dunyun Industrial, Zhejiang Ruige Valve Group, Zhejiang Wandekai Fluid Equipment Technology, Ningbo D&R Metal Industries, Yuhuan Dayu Valve, Zhejiang Valogin Technology, Ninghai Raising Copper Industry and Ningbo Doway M&E.

Between the lines: - The roundup points to Zhejiang as the center of China's brass valve supply base, with Ningbo, Yuhuan and surrounding industrial areas playing a major role. - The report ties buying decisions to regulatory pressure in North America and Europe, where lead-free and drinking-water standards shape product acceptance. - The emphasis on in-house testing and third-party listings suggests buyers are using compliance documentation as a shortcut for reducing procurement risk. - Chinese suppliers are competing in a market where North American incumbents still hold strong distribution positions, so documentation becomes a key differentiator.

What's next: - Procurement in 2026 is expected to concentrate further around documented compliance, factory audits and certificate verification. - Buyers are expected to ask for current certification documents, material traceability records and factory test results before placing orders. - Manufacturers with multi-standard certifications and broad product portfolios are likely to have an advantage in export-driven purchasing.

The bottom line: - In brass check valves, compliance paperwork is now part of the product itself.