... As your demand to produce the size of marine ball valve Cast Iron Marine Ball Valves DN40Standard: JIS DIN ANSI or othersMaterial: CastingPressure ... and exporter of all kinds of marine valves, air vent heads and piping accessories. Our valves are in accordance with JIS GB ... of 5k, 10k, 16k, our valves include various types-globe valve, check valve, swing check valve, gate valve, hose valve and their ...