Profile: Tecval, S. L. specializes in providing valves and fittings. Our products are made of brass, carbon and stainless steel. Our needle valves are used when a reliable cut and a steady fluid flow are required. Our needle valves include back-seat, integral bonnet and gas valves. Our check valves are designed to work with liquids and gases under both high pressure & temperature. These valves include a poppet seal, with or without spring. Our 2-valve manifolds are utilized in one-level pressure applications.