Cleaning, maintaining and working on dangerous machinery should only be done when energy sources have been isolated. In addition, compressed air needs to be exhausted from a system before hazardous equipment can be considered safe.
Safety standards require a procedural system where a physical device for blocking and exhausting air is used and various people are responsible for the disconnection and reconnection. This Lock-Out/Tag-Out system specifies:
fast efficientdissipation (of stored energy)
reliableverification (that there is no residual air pressure) and
In order for this to function safely, a LOX* valve meets the following safety criteria:
Easy to identify and distinctive in appearance.
Easy to operate.
Over-sized exhaust ensures rapid energy dissipation.
Only capable of being locked in the "off" position.
Built-in provision for a visual pressure indicator.
Port sizes range from 1/4" up to 3". Internals are engineered for safety and reliability. Special anti-clog high-flow mufflers are available to ensure fast, safe exhaust at comfortable noise levels.
Also, where sudden re-introduction of air pressure can cause problems, a built-in Soft Start function for gradual re-application of pressure is available.
*LOX is a registered trademark.
Lewis Automation | Pneumatic Automation Components
Lewis Automation are Australia's specialist suppliers of pneumatic automation components.
Lewis stock and support a huge range of air powered equipment including cylinders & actuators, control ...