Stem Packing + Backup Ring： For style FC,FL&FLS(2K-15K) Manual Gate Valve
Material Specification : FILLED PTFE+Elg & PEEK
API 6A,PSL 1-4
Temperature Ratings:K,L,P,S,T,U,V
Material Class:AA,BB,CC,DD-NL,EE-NL,FF-NL
API Designation 75K,197-237 HBW
Size:1" - 6" Inch
Working Pressure: 2.000-15.000 psi
