Swagelok MS-VL-S-4 Valve Lockout Red Polypropylene

Swagelok MS-VL-S-4 is a red polypropylene valve lockout accessory for Swagelok 31, JN, 20, and 1 series valves with a 0.172 inch (4.4 mm) orifice. The part number MS-VL-S-4 identifies this specific lockout size and compatibility within Swagelok's valve lockout family. When installed on the targeted valve types, the lockout prevents actuator movement to deter unapproved operation during maintenance or safety procedures, aligning with lockout/tagout practices. Constructed from polypropylene, it offers a lightweight, non-metallic option in Swagelok's lineup of valve lockouts, and its red color enhances visibility in work areas. This accessory is designed to accompany Swagelok valves in the 31, JN, 20, and 1 series, providing a standardized, compatible means of securing those valves during service.