Reasonable Structure
Reliable Sealing
Easy Open or Close
Easy Operation
Easy Maintenance
Long Usage Life 
Size:     2-1/16”  2-9/16”  3-1/8”&3-1/16”  4-1/16” 
Working Pressure:        5000PSI       10000PSI     15000PSI
Operating Pressure:     450PSI
Level:  DD   EE   FF   
Working Temperature:     PU    LU
PSL: 1~3       PR:1