Marine Self Closing Valve - Marine Self Closing Valve - Hi-sea

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Marine Self Closing Valve

Marine Self Closing Valve

Introduction

A marine self-closing valve is a type of valve commonly used in marine applications to control the flow of fluids such as water, oil, or fuel. The valve is designed to automatically close in the event of an emergency, such as a fire or flooding, to prevent the spread of the fluid and minimize damage to the ship or vessel.

The self-closing mechanism of the valve can be activated in different ways, depending on the specific design of the valve. Some valves may rely on mechanical mechanisms, such as springs or weights, to close the valve in case of an emergency. Others may use hydraulic or pneumatic pressure to trigger the valve's closure.

Marine self-closing valves are typically constructed from durable materials such as brass, bronze, or stainless steel, to withstand the harsh marine environment and resist corrosion and erosion. They are commonly used in critical areas of the ship, such as engine rooms, pump rooms, and fuel storage areas, where the risk of fire or flooding is high.

Advantage

1. Safety: The self-closing mechanism of the valve ensures that it closes automatically in case of a sudden pressure drop or a power failure, preventing any potential damage or hazard.

2. Efficiency: The valve ensures efficient flow control, preventing any leakage or backflow, thereby reducing the risk of contamination and ensuring the smooth operation of the system.

3. Durability: Marine self-closing valves are made of high-quality materials that are corrosion-resistant, durable and can withstand harsh marine environments.

4. Maintenance: These valves require minimal maintenance and are easy to clean, reducing downtime and increasing productivity.

5. Cost-effective: The long lifespan and low maintenance requirements of these valves make them a cost-effective solution for marine applications.

6. Compliance: Marine self-closing valves meet international marine standards and regulations, ensuring compliance with safety and environmental requirements.

7. Versatility: These valves can be used in a variety of marine applications such as ballast systems, fuel systems, and firefighting systems.

Configuration Selection

Part name

Material

Advantages / Disadvantages

Valve Body

Bronze

1. Seawater corrosion resistance;
2. The price is slightly higher than that of cast steel and cast iron;

Cast Steel

1. High mechanical strength and toughness;
2. It has special properties such as heat resistance, corrosion resistance and wear resistance;
3. The price is lower than that of bronze and higher than that of cast iron;

Cast Iron

1. Not corrosion resistant;
2. The price is lower than that of bronze and cast steel;

Spool

Bronze

1. Strong low temperature resistance;
2. Seawater corrosion resistance is stronger than stainless steel (304, 316);
3. The price is slightly higher than that of stainless steel;

Stainless Steel

1. It has strong tensile, anti-wear and corrosion resistance, and will not produce corrosion, pitting, corrosion and wear;
2. Stronger than copper;
3. High temperature resistance;

Valve Stem

Stainless Steel 304

1. Acid and alkali resistance;
2. High temperature resistance;
3. The price is lower than stainless steel 316;

Stainless Steel 316

1. It is more corrosion-resistant and acid resistant than stainless steel 304;
2. The price is slightly higher than that of stainless steel 304;

Valve Cover

Bronze

1. Seawater corrosion resistance;
2. The price is slightly higher than that of cast steel and cast iron;

Cast Steel

1. High mechanical strength and toughness;
2. It has special properties such as heat resistance, corrosion resistance and wear resistance;
3. The price is lower than that of bronze and higher than that of cast iron;

Handwheel

Csat Iron

The price is lower than that of bronze and cast copper

The differences are as follows

Product drawings of other low-quality suppliers

Our factory manufactures products

Low quality product features

Consequence

Features of our products

Achieve results

1. Insufficient raw materials;
2. The processing method is not standard

The wall thickness is uneven, the material distribution is uneven, the valve body is easy to be damaged, and the service life is short

It is processed in strict accordance with the standard, with uniform wall thickness and material

The product has high safety factor and long service life

1. Made of iron and carbon steel;
2. Use the recovered scrap valve to repair and then sell it again;

The hardness and accuracy of the valve cannot meet the needs of use, and the shell is easy to crack, resulting in running, emitting, dripping and leakage, and even causing oil and gas pipeline explosion

Select high-quality materials according to customer needs, and make new products in strict accordance with standards

The hardness and accuracy of the valve meet the standard quality requirements to ensure the normal operation of the equipment

To improve profit margin, purchase cheap unqualified bolts

Unqualified valve bolts lead to safety hazards, which is easy to cause accidents

Make new valves in strict accordance with the material requirements of customers, and never substitute inferior products for good ones

Meet the hardness and accuracy requirements of standard valves, ensure the quality of valves and ensure the normal operation of equipment

Flange manufacturing quality is poor, with cracks, pores, insufficient thickness and other problems

It leads to wear resistance and poor pressure bearing of the valve, and the valve is prone to quality problems, which makes

short service life

Adopt standard bolts with quality assurance in strict accordance with customer requirements

Improve safety factor and prolong service life

In order to reduce the cost, cast iron valve core is used instead of bronze valve core

Cast iron valve core is easy to be corroded and damaged

Select standard materials in strict accordance with customer requirements

The product structure is reasonable and the safety factor is high

In order to reduce costs, ordinary round steel valves are used instead of stainless steel valves

1. The diameter of valve rod fails to meet the requirements;
2. The performance of alternative materials is unstable, without heat treatment, the quality can not meet the standard, and the service life is short

1. Made of stainless steel;
2. The diameter of valve rod meets the design requirements;
3. High temperature quenching and tempering heat treatment

The product has reasonable structure, high safety factor and long service life

Drawing

① Body: Cast Steel

② Seat: Bronze

③ Disc: Bronze

④ Stem: Brass

Parameter performance


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