The application of multi-link pulley is generally when the communication cable through the two wellhead operation, because the wellhead is below the cable wear up, the cable pipeline directly in contact with the wellhead will cause wear and tear of the cable, this time coupled with the triplex or multi-link pulley there is no such problem, this pulley has a triangular-shaped pulley bracket, triplex is three sets of pulleys connected to the first and last, the middle with a card nail fixed, three triplex pulley can be adjusted, and then is based on the depth of the underground wellhead to choose to multi-link or triplex.
