CEMENTING HEADDOUBLE-PLUG CEMENTING HEADFeatures:
1、The Model ST Double-Plug Cementing Head is suitable for conventional cementing operations with bottom and top plugs or continuous two-stage cementing operations. 
2、Convenient Quick-Installation Adapters of different thread types are available. 
3、The Balance Pipe eliminate the sucking to plugs due to U-Tube effect and ensure easy release of the plug retainer. 
4、The Plug Indicator indicates the plug release action.