The Markal Valve-Action Paint Marker delivers invisible UV ink through a reliable valve-action tip, making it ideal for discreet identification and tracking on valves, fittings, and other hard-to-reach components. The ink remains invisible under normal light and fluoresces under UV/black light, allowing for covert marking in industrial and MRO applications.
Designed for precision and ease of use, this marker's valve-action mechanism provides consistent ink flow for clean, controlled marks on a variety of surfaces. It is well-suited for maintenance, inspection, and security marking tasks across manufacturing, plumbing, and facility management environments.