Marine Parts

Example of Marine Part

Marine Pressure Gauge
Introduction:
Marine pressure gauges are designed specifically to measure pressure within shipboard installations. They can measure the pressure of gases, liquids, and other media that do not corrode copper alloys, crystallize or precipitate. Key features include clear visibility in darkness, resistance to salt spray, operation under tilt and roll conditions, and vibration resistance. These characteristics make marine pressure gauges ideal for use on ships and offshore equipment, ensuring accurate and reliable performance in complex and variable environments.
Advantages:
●Shock-resistance
Marine pressure gauges offer excellent shock resistance, making them ideal for shipboard conditions with mechanical vibrations, ensuring stable and accurate pressure measurement on ships and related equipment.

●Clear visibility in darkness
The main scale and pointer tips of marine pressure gauges are coated with a permanent luminescent agent, allowing for clear observation of readings in the dark, which is crucial for nighttime or low-light conditions.

●Salt spray resistance
Marine pressure gauges have significant salt spray resistance, capable of enduring the GB/T2423.17—1993 specified 48-hour test without noticeable corrosion, ensuring durability in maritime environments.

●Operational under tilt and roll
Marine pressure gauges are designed to function normally under specified tilt and roll conditions, advantageous for the bumpy and rolling environments encountered during navigation.

●Vibration resistance
Marine pressure gauges can operate correctly under vibration conditions with an amplitude of 1mm and a frequency less than 13Hz, ensuring readings remain unaffected by vibrations during ship operation.

Marine Hydrometer
Introduction:
Draught survey hydrometers are used to determine the apparent weight (i.e. the weight in air) of the vessel and from this the commercially accepted weight or apparent density of the cargo on board. These hydrometers are also calibrated at standard temperatures but no temperature correction is required. A small error is introduced if the hydrometer is not at its standard temperature but this is compensated for by a change in the volume of the ship. This change is due to the same temperature difference but the cubical expansion coefficient correction for steel expansion is of the opposite sign to that for glass expansion and the two differences tend to cancel each other out. These hydrometers should not be used for load line purposes.
Types:
●Seawater Hydrometer
This instrument is specifically designed to measure the salinity of seawater. It employs Archimedes' principle and the condition of equilibrium for an object floating on a liquid surface, reflecting salinity levels by measuring the density of seawater at different salinities. The device typically consists of a sealed glass tube with one end uniformly thin, featuring a graduated scale on the inner wall that is uneven, sparse at the top and denser at the bottom. The other end is slightly bulbous, containing small lead pellets or mercury, allowing the tube to vertically submerge to an adequate depth in the liquid under test and to float steadily within it. When the hydrometer floats in the liquid, its own weight equals the weight of the displaced liquid, resulting in varying depths of immersion and pressures depending on the liquid, which the hydrometer uses for its scale calibration.

●Salinity Meter
A salinity meter is another tool used to measure seawater salinity, offering high precision capable of measuring salinity ranges from 0 to 100‰. Salinity meters are commonly used in seawater aquaculture, fisheries, seafood tanks, and aquariums to ensure the water's salinity remains at suitable levels, thereby maintaining ecological balance and promoting biological growth.

Marine Flange Fire Hydrant
Introduction:
Marine flanged fire hydrant valve is a type of firefighting equipment that is specialized for use on ships and is usually installed in the ship's firefighting system. These valves usually have a flange connection for connection to the piping system and also have a hydrant function to provide a source of water to extinguish a fire in the event of a fire. Marine flanged fire hydrant valves are usually corrosion, high pressure and temperature resistant to ensure reliable operation in emergency situations. Marine flanged hydrant valves may also be equipped with a handwheel or handle to allow the operator to quickly open or close the valve.
Advantages:
●Simple structure, easy operation
The design of theSimple structure, easy operation: The design of the hydrant is straightforward, The design of the marine flanged fire hydrant is straightforward, making its operation intuitive and quick to respond to emergencies.

●Good sealing performance
The fire hydrant features excellent sealing capabilities with minimal friction between sealing surfaces, ensuring effective sealing after prolonged use and preventing leaks.

●Long service life
Good sealing reduces wear, extending the fire hydrant's lifespan and lowering maintenance costs.

●Short working stroke, quick opening and closing
This means the fire hydrant can be rapidly opened or closed in emergencies, enhancing response efficiency.