YJZQ type high-pressure ball valve I. Model Description An ... the valve, the standard number GB1235-76. (2) screw strength 10.9; for those who need it when ordering ... 31.5MPa, the nominal diameter 20mm, metric threaded connection type ball valve, the model YJZQ-J20N (2) Nominal pressure ... of 31.5MPa, nominal diameter 10 mm, connection plate, screw type ball valve, the model YJZQ-J10B (with screws) YJZQ ...