... 31.5MPa, the nominal diameter 20mm, metric threaded connection type ball valve, the model YJZQ-J20N (2) Nominal pressure of 31.5MPa ... , the nominal diameter 15mm, the ball valve within the interface inch pipe thread, the model for YJZQ-J15NG (3) The nominal pressure ... 31.5MPa, nominal diameter 10 mm, connection plate, screw type ball valve, the model YJZQ-J10B (with screws) YJZQ type high-pressure ...