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