YJZQ type high-pressure ball valve I. Model Description An internal the ... 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 ... nominal diameter 10 mm, connection plate, screw type ball valve, the model YJZQ-J10B (with screws) YJZQ ...