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Home > Marine Self Closing Valve

Self Closing Valve

Self Closing Valve

Introduction:

Suitable for marine fresh water, air or gas, fuel oil, lubricating oil, 205°C steam pipelines in shipbuilding, repair or offshore platform construction.

A self-closing valve, also known as an automatic valve, is a type of valve that is designed to automatically shut off the flow of fluid when a certain condition is met. This condition can be the presence of a certain pressure or flow rate, a change in temperature, or the detection of a fault in the system.

Application:

Self-closing valves are commonly used in a variety of applications, including plumbing systems, industrial processes, and firefighting equipment. They are particularly useful in situations where it is critical to quickly shut off the flow of fluid to prevent damage to the system or to protect human life.

Self-closing valves may be constructed from a variety of materials, including metals, plastics, and ceramics, depending on the application and the fluid being conveyed. They may also be designed to handle different types of fluids, such as gases, liquids, or slurries.

Configuration Options

Name of Parts	Material	Advantages/Disadvantages
Valve Body	Bronze	Pressure resistance, wear resistance, and toughness are higher than those of brass. Bronze has a certain delay in the rusting time of the valve. more expensive than brass
Valve Body	Cast Steel	The price is higher than cast iron and lower than bronze. It has high mechanical strength and toughness. With heat resistance, corrosion resistance, wear resistance and other special properties.
Valve Bonnet	Bronze	Bronze has the characteristics of low melting point, high hardness, strong plasticity, wear resistance, corrosion resistance, bright color and so on. Compared to pure copper, bronze has high strength and low melting point. Bronze has good castability, wear resistance and chemical stability
Valve Bonnet	Cast Steel	The price is higher than cast iron and lower than bronze. Has high mechanical strength and toughness. It has special properties such as heat resistance, corrosion resistance and wear resistance.
Valve Disc	Bronze	Bronze has excellent low temperature resistance, the price is a little more expensive than stainless steel, and the seawater resistance of bronze is better than that of stainless steel
Valve Disc	Stainless Steel	Stainless steel has a strong ability to resist tension, wear and corrosion. Stainless steel is much stronger than copper in material. Stainless steel will not produce corrosion, pitting, rust or wear and high temperature resistance.
Valve Stem	Stainless Steel 304	SS 304 has good processing performance and high toughness
Valve Stem	Stainless Steel 316	SS 316 has better corrosion resistance and high temperature strength

Specific Difference Between Us and Other Suppliers:

Comparison
Product Picture of other low quality supplier		Product Picture of our factory
Other low quality supplier	Consequence	Our Factory	Result
In order to reduce costs, omit raw materials and reduce internal quality, resulting in the thin wall of the valve body that occupies the main body of the valve.	Leaving a safety hazard, the thin wall is easy to break or leak the valve at high temperature and high pressure or during operation.	Strictly in accordance with the standard processing, uniform thickness, uniform material	Use with confidence, meet user needs, and the product has a long service life
Poor manufacturing quality of valve cover, uneven thickness, uneven material	Bonnets are prone to breakage, blisters, corrosion or aging problems	Strictly in accordance with the standard processing, uniform thickness, uniform material	The quality of the valve cover is good, it is not easy to generate air holes, and the product has a long service life.
The manufacturer considers the cost and purchases unqualified standard bolts	Leaving hidden dangers on the valve results in an accident.	According to customer requirements, use standard bolts.	Use it with confidence, reduce safety hazards and reduce the accident rate.
In order to reduce cost, bronze valve core is replaced with cast iron valve core,	Cast iron valve core is easy to corrode and break	Strictly select materials according to user requirements	High safety factor and reasonable structure
Use ordinary round steel stem instead of stainless steel stem	The performance of the substitute material is unstable, the ordinary round steel is processed, the valve stem is thin and there is no heat treatment, which leads to the deterioration of the valve quality.	Made of stainless steel, the diameter of the valve stem meets the design requirements, and it has undergone high temperature quenching and tempering heat treatment.	High safety factor, reasonable structure, long product life

Technical Data

Nominal pressure(MPa): 0.1

Nominal diameter(mm): 25

Outline Drawing:

Certification: