... 31.5MPa, the nominal diameter 20mm, metric threaded connection type ball valve, the model YJZQ-J20N (2) Nominal pressure of 31.5MPa ... J15NG (3) The nominal pressure of 31.5MPa, the nominal diameter 32mm external threaded connection with the takeover and nut ball valve, the ... 31.5MPa, nominal diameter 10 mm, connection plate, screw type ball valve, the model YJZQ-J10B (with screws) YJZQ type high- ...