YJZQ type high-pressure ball valve I. Model Description An internal ... the nominal diameter 20mm, metric threaded connection type ball valve, the model YJZQ-J20N (2) Nominal pressure ... 31.5MPa, the nominal diameter 15mm, the ball valve within the interface inch pipe thread, the model ... 10 mm, connection plate, screw type ball valve, the model YJZQ-J10B (with screws) YJZQ type high-pressure ball valve