Slide the two half parts to cover the Gate Valve handle, with handle in required position. Push together as far as handle size will allow. The GVL-1 is designed to fit up to maximum 160mm – minimum 50mm handle diameter size.
Insert a padlock through holes provided, as shown, to prevent opening of device. Thereafter, attach a Danger Tag.
Ensure that the device cannot be removed and that access to Gate Valve Handle is blocked efficiently. Some of these valve handle cannot be turned. If the device cannot securely block access to gate handle, it must NOT be used.
