Classic Stopcock Valve Diagram - Plumbing Component Illustration #302637 (License: Personal Use)

This black-and-white technical illustration depicts a vintage brass stopcock valve featuring a central spherical body, two external male pipe threads for inline installation, and a T-shaped cross handle for manual flow control. The design includes a hexagonal packing nut for stem sealing and precise machining details indicating its use in low-pressure domestic or industrial fluid systems. The stylized linework suggests it originates from early 20th-century engineering manuals.

Used in plumbing repair guides, historical hardware catalogs, educational resources on valve types, and restoration projects for period homes; targets users seeking identification, schematics, or replacement part references.