Febco 4" 850/856/LF850/LF856/856ST/860/LF860/LF866 1st or 2nd Check Cover
Details
Details
Febco: 905377 - 4" Tapped Cover Assembly for 850/856 DC, 860/LF860 RP
Kit Includes: Cover, Expansion Pin, Socket Bearing and O-Ring
Manufacturer: Febco
Size: 4 Inch
Product model: 850 LBF , 856 LBF, 856ST, 860 LBF , LF850 LBF , LF860 LBF
Size: 4 Inch
Product model: 850 LBF , 856 LBF, 856ST, 860 LBF , LF850 LBF , LF860 LBF
https://www.youtube.com/embed/czBtY0zjLb0 Specification Sheet 
FEBCO MasterSeries® LF850 Maintenance & Repair