Marine Quick Closing Valve
Introduction
A Marine Quick Closing Valve (QCV) is a type of valve used on ships and other marine vessels to rapidly shut off the flow of fluids such as water, oil, or chemicals in the event of an emergency.
The QCV is typically located in the pipeline system that carries fluids through the ship, and is designed to close quickly to prevent spills or leaks that could endanger the crew, damage the environment, or cause damage to the ship itself.
The valve can be operated manually or automatically, and is usually located in a readily accessible location for quick and easy operation.
In addition to emergency shut-off capabilities, QCVs are also used for routine maintenance tasks such as isolating sections of the pipeline for repairs or modifications. They are typically constructed of high-quality materials such as stainless steel or bronze to withstand the harsh marine environment and to ensure long-lasting, reliable performance.
Advantage
The advantages of using a Marine Quick Closing Valve are:
1. Safety: The main advantage of using a Marine Quick Closing Valve is the safety it provides to the crew and the vessel. It helps to prevent flooding and spillage of liquid or gas in case of an emergency.
2. Quick Action: The valve can be closed quickly in case of an emergency, thus preventing any further damage.
3. Ease of Operation: The valve is easy to operate, and the crew can quickly close the valve in case of an emergency.
4. Reliability: The Marine Quick Closing Valve is a reliable component, and it has a long service life.
5. Low Maintenance: The valve requires minimal maintenance, and it is easy to clean and maintain.
Nominal Diameter & Pressure
Diameter: DN15--DN125
Pressure: PN10/16
Configuration Selection
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Part name |
Material |
Advantages / Disadvantages |
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Valve Body |
Bronze |
1. Seawater corrosion resistance; |
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Cast Steel |
1. High mechanical strength and toughness; |
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Cast Iron |
1. Not corrosion resistant; |
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Spool |
Bronze |
1. Strong low temperature resistance; |
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Stainless Steel |
1. It has strong tensile, anti-wear and corrosion resistance, and will not produce corrosion, pitting, corrosion and wear; |
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Valve Stem |
Stainless Steel 304 |
1. Acid and alkali resistance; |
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Stainless Steel 316 |
1. It is more corrosion-resistant and acid resistant than stainless steel 304; |
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Valve Cover |
Bronze |
1. Seawater corrosion resistance; |
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Cast Steel |
1. High mechanical strength and toughness; |
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Handwheel |
Csat Iron |
The price is lower than that of bronze and cast copper |
The differences are as follows
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Product drawings of other low-quality suppliers |
Our factory manufactures products |
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Low quality product features |
Consequence |
Features of our products |
Achieve results |
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1. Insufficient raw materials; |
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 |
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1. Made of iron and carbon steel; |
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 |
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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 |
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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 |
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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 |
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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; |
1. Made of stainless steel; |
The product has reasonable structure, high safety factor and long service life |
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Drawing |
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① Body: Cast Iron |
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② Seat: Rubber |
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③ Disc: Stainless Steel |
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④ Stem: Stainless Steel |
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Parameter performance
Product Showing
Certificates
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