SMC VHS40-04-XG-X2127 Pneumatic 3 Port Lock Out Hand Valve

The SMC VHS40-04-XG-X2127 is a 3-port manual lockout valve that isolates the compressed air supply and exhausts downstream pressure when the handle is moved to the off position. Its 1/2-inch ports connect directly into standard pneumatic lines, and the handle incorporates a padlock hole that prevents the valve from being reopened until the lock is removed. This design supports lockout/tagout procedures on machinery without needing external power or controls. The valve body and handle are engineered for repeated industrial use in automation, assembly, and maintenance applications where a positive means of energy isolation is required.