Reasonable Structure
Reliable Sealing
Easy Open or Close
Easy Operation
Easy Maintenance
Long Usage Life 
Size:    4-1/16”     5-1/8”     6-3/8”&7-1/16”
Working Pressure:        10000PSI     15000PSI
Operating Pressure:      1500PSI~3000PSI
Level:                  DD   EE   FF    HH
Working Temperature:     PU    LU
PSL: 1~3G       PR:1