Material:

Bronze Marine fire hydrant valves are usually made of bronze (copper alloy). This material has good corrosion resistance and seawater corrosion resistance, which is suitable for offshore environment.

Cast iron Marine fire hydrant valves are usually made of cast iron, which has high mechanical strength and pressure resistance and is suitable for some specific high-pressure fire fighting systems.

Corrosion Resistance:

Bronze Marine fire hydrant valves have good corrosion resistance and can cope with the challenges of Marine environment such as seawater corrosion.

Cast iron Marine fire hydrant valves may require additional anti-corrosion treatment to cope with seawater corrosion.

Mechanical Strength:

Cast iron Marine fire hydrant valves usually have higher mechanical strength and are suitable for some fire fighting systems that need to withstand higher pressures.

Bronze Marine fire hydrant valves may not have the same level of mechanical strength as cast iron valves and are therefore suitable for general fire protection systems.

Applicable Environment:

Bronze Marine fire hydrant valves are suitable for Marine environments due to their good corrosion resistance.

Cast iron Marine fire hydrant valves are more common in certain high pressure fire fighting systems.

Weight and Volume:

In general, bronze Marine fire hydrant valves are relatively lightweight and small in size, making them suitable for ship systems with limited space.

Cast iron Marine fire hydrant valves may be relatively heavy and bulky, requiring more installation space.