2026-Zhejiang Demalong Fluid Technology Co., Ltd.

Zhejiang Demailong Fluid Technology Co., Ltd. is based in Oubei, China’s renowned pump and valve industrial base. It is a professional manufacturer specialized in the R&D and production of various plug valves and special fluid control valves with solid operating experience. Our main products include lift, orbital, inverted oil-sealed, ferrule-type and eccentric plug valves. Featuring flexible operation, low torque, stable performance and easy maintenance, our valves can be equipped with pneumatic, electric, hydraulic and counterweight drives for automated and remote control. We also supply insulated and balanced American-standard plug valves in diverse materials such as 304, 316, 904L, 2205, 2507 and titanium. Our valves cover DN15–DN800, pressure PN0.6–1.0MPa / 150LB–1500LB, and temperature range from -29℃ to 600℃. Our products are widely used in metallurgy, power, chemical, environmental protection, municipal, papermaking and pharmaceutical industries for water supply and sewage treatment. With strict quality control and reliable after-sales service, we have earned high trust and reputation from global clients.