Y.L. Machinery commitment to quality is supported by several fundamental Y.L. Machinery policies : Valve design in reviewed prior to production to insure compliance to industry standards. Manufacturing systems are reviewed prior to production to insure conformance to Y.L. Machinery quality standards. Semi-annual audits of manufacturing processes and personnel are conducted by Quality Department staffs to insure that any changes in production or design are properly evaluated with respect to product quality. Individual product tests and inspections to ANSI and API Standards are carried out by technical staffs. Traceability procedures of Y.L. Machinery valves consists of every valve being fully traceable with permanent identification cast into the body. All valves have complete chemical, physical and testing reports to support the quality standards of Y.L. Machinery products. Certification for Y.L. Machinery include: API 6D Certification #6D-0372 ISO 9001