This specification relates to the supply and installation of Axial Flow Control Valve (Needle Valves type) and Accessories. All materials shall be supplied as specified and shall be subjected to approval. The material of the valve and accessories shall be free from scale, lamination, inherent corrosion and any other defects. Valve and accessories shall be manufactured, inspected and tested in accordance with the applicable codes and standards and shall be capable of withstanding design conditions of the operating systems. The specifications provided herein shall be supplemented with those provided in the Data Sheet. Valve manufacturer shall be certified to ISO 9001:2008. Contractor/Manufacturer shall further warranty the valve against manufacturing defects, material failure and corrosion problems for five years from the date of supply.