Blind Riser Sleeves – Type BDM

  • A riser sleeve can make a riser set smaller than a sand riser due to its strongly exothermic heat and great insulation feature. It leads to make product design easier; decrease the cost of backend trimming and  remelting; and decrease defects caused by volumn shrinkage during metal solidification.
  • A blind riser sleeve has better insulation and more effective than a open top riser sleeve, which generally used due to its closed upper side which prevents heat loss and increase insulation. It can be embeded in a mold to set up riser inside.

Blind Riser