Castflow Valves SL

Castflow Valves SL is a Spanish engineering and manufacturing company based in Humanes, Madrid, that focuses exclusively on check valve design and production. Founded by engineers with deep expertise in backflow prevention, Castflow has developed eight distinct check valve configurations, each targeting specific flow conditions and industry requirements. Their product range includes dual plate check valves for compact installations at pumping stations and distribution networks; ball check valves for viscous fluid handling; nozzle check valves engineered for the high-performance demands of desalination plants and high-head pumping; retainerless check valves designed for oil, gas, and steam service where in-line maintenance access is critical; rubber lined check valves with abrasion-resistant linings for mining and slurry service; foot check valves with integrated strainers for pump intake protection; axial check valves offering low pressure drop for pipeline networks; and high pressure check valves built for desalination and high-head applications. Castflow employs 3D design engineering in-house and provides specification support for material selection across diverse media including clean water, seawater, aggressive chemicals, and abrasive slurries. The company holds CE certification through June 2025 and offers custom alloy and material solutions to meet project-specific requirements. Their focused specialization enables deep expertise across the full range of backflow prevention challenges in water infrastructure, desalination, mining, oil and gas, and naval applications.