Technical regulations and scope of BS 1868
This specification establishes strict engineering requirements for the design, geometric parameters, material selection, marking methods, and supply protocols for swing, piston, ball, and disc check valves. The standard covers products with nominal pressure ratings from Class 150 to Class 2500 and nominal sizes (DN) ranging from 15 to 600 mm. The technical requirements are harmonized with the provisions of the BS 4504 (Part 1) standard to ensure integration into modern pipeline systems.
Swing check valves manufactured by EV Group China are a critical component for the infrastructure of the oil and gas sector, petrochemical complexes, power facilities, and marine engineering. We offer an extensive range of body and trim materials, allowing the equipment to be used both in standard operating conditions without the risk of corrosion and in highly aggressive environments requiring increased wear resistance and chemical inertness.