Approval drawing : An approval drawing is typically a detailed technical document that provides the specifications, dimensions, and other relevant details of a component or product. It is used to gain approval from stakeholders (such as engineering teams, clients, or manufacturers) before moving forward with production or procurement. For a TOTO solenoid valve or any other component, an approval drawing would typically show: Overall dimensions (height, width, depth) Material specifications (for the body, diaphragm, etc.) Connection types (e.g., threaded or flanged connections) Operating pressure and voltage specifications Flow rate or other functional specifications Installation instructions If you are looking for a specific approval drawing for a TOTO solenoid valve, I recommend: Contacting TOTO directly via their customer service or technical support. Visiting authorized dealers or suppliers who might be able to provide these drawings upon request. Checking with your local plumbing supplier, as they may have access to these technical documents. www.bechennai.com, Mobile no: 888 333 33 22.