This lockout/tagout ball valve is designed to accept most OSHA approved locks/shackles. It is available as a complete assembly or kit for field retrofit; the retrofit installs easily with self-tapping fastener. All parts are fabricated of corrosion-resistant thermoplastic. Valves are offered in PVC, CPVC, Natural Polypro or PVDF. www.plastomatic.com/mbvl.html