Nominal Diameter: DN50
Connection Method: GB 569-65 Flange Connection
Working Medium: Water (Particle-free)
Model: HY-SV-DS
Technical Parameters:
Nominal Diameter: DN50
Connection Method: GB 569-65 Flange Connection
Working Medium: Water (Particle-free)
Nominal Pressure: PN64
Medium Pressure: 0.3-3MPa
Working Voltage: AC220V
Valve Body Material: 304 Stainless Steel
Control Method: Normally Open
Power: 80W
Installation Environment: Underwater to 200 meters (4000 meters customizable)
Additional Functions: With open and closed position feedback
Valve Body Weight: 27.4kg
Deep sea solenoid valve: Reliable Fluid Control for Extreme Underwater Environments
When a valve is used on land, we can usually inspect it, repair it, or replace it without too much trouble. Deep underwater, the situation is very different. High external pressure, low temperature, seawater corrosion, limited space, and difficult maintenance can all affect the performance of a fluid control system. This is why choosing the right deep sea Solenoid Valve matters.
At Xi'an Huiyuan Instrument Valve Co., Ltd., we have been working in the fluid control field for decades. We develop and manufacture different types of solenoid valves, electrically controlled valves, pneumatically controlled valves, Pressure Reducing Valves, and special non-standard valves. Our experience also includes customized valve products for aerospace, commercial spaceflight, nuclear power, shipbuilding, and research testing systems.
Our deep sea valve solutions are designed around one simple idea: the valve must work reliably when the environment is not simple. Instead of treating an underwater valve as an ordinary solenoid valve with a different housing, we consider the whole working condition, including pressure, temperature, fluid type, electrical requirements, installation space, sealing, corrosion resistance, and operating frequency.
This page explains what a deep sea solenoid valve is, how it works, where it can be used, what we pay attention to during manufacturing, and how we approach customized projects. If you are looking for a deep sea solenoid valve manufacturer or a custom Underwater solenoid valve, this information can help you understand what should be considered before placing an order.
A deep sea solenoid valve is an electrically operated valve designed for fluid control in underwater or other demanding environments. It uses an electromagnetic coil to control the movement of an internal valve element. When the electrical signal changes, the valve can open, close, or change the flow path depending on its design.
The basic idea sounds simple. The engineering behind reliable underwater operation is not.
In a normal industrial installation, the surrounding air pressure may have little influence on the valve body. In deep water, external pressure can become an important design factor. The valve may also face seawater, salt, moisture, temperature changes, vibration, and long periods without direct maintenance.
For this reason, we do not define a deep sea solenoid valve only by its connection size or electrical voltage. A complete technical review normally considers:
Working medium and fluid characteristics
Internal working pressure
External underwater pressure
Required operating depth
Working temperature
Valve material and corrosion resistance
Sealing structure
Coil and electrical requirements
Installation dimensions
Required flow direction and flow capacity
Opening and closing response requirements
Operating frequency and service conditions
This is especially important for engineering projects. Two valves may look almost identical from the outside but may have very different suitability for a particular underwater system.
Consideration
Standard Industrial Solenoid Valve
Deep Sea Solenoid Valve
Installation environment | Usually land-based or protected equipment | Underwater or other high-pressure environments |
External pressure | Usually a minor design factor | Can be a major design consideration |
Corrosion exposure | Depends mainly on the industrial medium | May include seawater and high-humidity conditions |
Sealing requirements | Based mainly on internal fluid conditions | Internal and external sealing conditions may both matter |
Customization | Often available as standard configurations | Frequently requires engineering review |
Maintenance access | Usually relatively easy | May be difficult and expensive |
Source: Xi'an Huiyuan Instrument Valve Co., Ltd. product and engineering information supplied for this product page. This comparison describes typical design considerations and is not a universal specification for every valve model.
In short, an underwater solenoid valve has to be treated as part of the complete fluid control system, not as an isolated component.
The operating principle is based on electromagnetism.
Inside the valve, an electrical coil creates a magnetic field when power is applied. This magnetic force moves an internal component, commonly called a plunger or armature. The movement changes the fluid passage and allows the valve to open or close.
When power is removed, a spring or another mechanical force can return the moving component to its original position, depending on the valve design.
That is the basic working principle. For deep sea applications, however, the real engineering challenge is making sure this simple movement remains stable under the actual operating conditions.
Electrical signal: The control system sends an electrical signal to the solenoid coil.
Magnetic force: The energized coil generates a magnetic field.
Mechanical movement: The magnetic force moves the internal valve mechanism.
Flow control: The internal passage opens, closes, or changes according to the valve structure.
Return action: When the signal changes, the valve returns to its designed state.
For an underwater application, we pay close attention to the interaction between the electrical, mechanical, and sealing parts. A good coil is not enough. A good seal is not enough either. The complete structure has to work together.
Depending on the application, the valve may be designed as normally closed, normally open, or another customized configuration. The appropriate solution depends on what the control system needs to happen when electrical power is available or unavailable.
Sealing is one of the most important parts of any underwater valve project. The sealing system has to prevent unwanted fluid movement and protect sensitive internal components from the surrounding environment.
We therefore consider seal material, sealing geometry, pressure conditions, temperature, fluid compatibility, assembly quality, and expected service conditions during technical review.
For customized deep sea solenoid valves, we recommend confirming the real operating environment before finalizing the design. This allows us to select the appropriate structure instead of making assumptions based only on the product name.
Our approach to deep sea valve design is based on the same principles we use for other high-end fluid control products: understand the working condition first, select the right structure and materials, control manufacturing quality, and inspect the finished product before delivery.
Underwater systems can be exposed to conditions that are very different from ordinary factory equipment. Pressure, temperature, moisture, seawater, vibration, and restricted installation space may all affect valve performance.
We take these conditions into account during technical communication and product development.
Deep sea projects often have different requirements. Some need a compact valve. Others require special electrical connections, specific installation dimensions, unusual flow paths, or compatibility with a particular fluid.
Because Huiyuan has long experience with special non-standard products, we can discuss customized valve structures based on the customer's technical requirements.
A valve is only useful when it controls fluid as expected. Our electrically controlled valve technology focuses on stable operation and precise control. The final performance, of course, depends on the selected model and application conditions.
Seawater is a challenging environment because it contains salts and other substances that can contribute to corrosion. Material selection therefore becomes an important part of underwater valve engineering.
For a project involving seawater or direct external exposure, we review the required material properties and environmental conditions rather than simply applying a standard material to every project.
We inspect finished products before shipment. Depending on the product and technical requirements, inspection can include performance, sealing, appearance, and other relevant checks.
This step is important because a valve may look perfect from the outside while a small sealing or performance problem remains hidden. Our goal is to identify such issues before the product reaches the customer.
Design Area
Why It Matters in Deep Sea Applications
Our Engineering Focus
Pressure | Water pressure increases with depth and can affect components and seals | Review internal and external pressure conditions |
Sealing | Leakage can reduce system reliability | Check sealing structure and material compatibility |
Material | Saltwater and moisture can increase corrosion risk | Select materials according to the working environment |
Electrical system | Stable control signals are necessary for reliable operation | Confirm voltage, power, connection and control requirements |
Size | Underwater equipment may have limited installation space | Review mounting and dimensional requirements |
Maintenance | Underwater maintenance can be difficult | Emphasize reliability and appropriate inspection before delivery |
Source: Xi'an Huiyuan Instrument Valve Co., Ltd. engineering and product information supplied for this page. The table presents engineering priorities rather than guaranteed specifications for every product.
One of the biggest mistakes in fluid control projects is choosing a valve only because its basic specifications appear to match.
For ordinary applications, a standard product may be enough. For deep sea equipment, the surrounding environment can change the design requirements significantly.
For example, suppose a customer tells us that the valve will be installed underwater. We would normally ask additional questions before recommending a final configuration:
At what depth will the valve operate?
What fluid will pass through the valve?
Is the valve exposed directly to seawater?
What are the internal and external pressure conditions?
What temperature range is expected?
What voltage is available?
How should the valve behave when power is lost?
What connection type is required?
What installation space is available?
How frequently will the valve operate?
These questions may seem basic, but they can make a major difference in the final valve design.
Huiyuan has long been involved in special non-standard valve products. We have supplied specialized control valves for military, aerospace, commercial aerospace, nuclear power, shipbuilding, and research applications.
This experience has taught us that engineering projects rarely fit perfectly into a catalog.
In commercial aerospace, for example, fluid control components may need to support systems operating under extreme conditions. In research institutes, customers may need a special valve or testing-system solution that cannot simply be purchased from a standard catalog.
Deep sea applications can have the same challenge. The customer may know the required function but need a valve manufacturer to turn that requirement into a practical product.
Requirement
Standard Valve May Be Suitable
Custom Valve Is More Appropriate
Common industrial medium | Yes | Only when special conditions exist |
Unusual underwater depth | Needs careful verification | Often recommended |
Special installation dimensions | Limited flexibility | Recommended |
Special electrical interface | Depends on available configuration | Often preferred |
Special fluid compatibility | Requires material verification | Recommended when standard materials are unsuitable |
Research and testing equipment | Sometimes suitable | Often required |
Source: Xi'an Huiyuan Instrument Valve Co., Ltd. product and engineering experience supplied by the manufacturer. This is a project-selection guide, not a universal industry standard.
We would rather spend more time understanding the application at the beginning than discover a mismatch after installation.
A deep sea solenoid valve can be used wherever controlled fluid movement is required in underwater or high-pressure environments. The exact application depends on the valve structure, materials, pressure rating, electrical configuration, and system design.
Underwater equipment often needs compact and reliable fluid control. Solenoid valves can be integrated into hydraulic, pneumatic, cooling, sampling, or other fluid systems depending on the design.
Deep sea exploration equipment may operate far below the surface and can be difficult to access once deployed. Fluid control components therefore need to be selected with the complete operating environment in mind.
Subsea engineering systems can involve hydraulic control, fluid distribution, pressure management, and other processes. A properly engineered underwater valve can provide an electrical control interface between the system controller and the fluid path.
Huiyuan has experience supplying specialized control valves to the shipbuilding field. Marine environments can place additional demands on materials, sealing, and long-term reliability.
Research institutes often need special valve configurations for experimental systems. In these projects, the valve may be one small part of a much larger test system, so interface compatibility and customization can be especially important.
Although aerospace and deep sea environments are very different, they share one important feature: equipment may operate under conditions where ordinary industrial assumptions are not enough.
Our long-term work with aerospace, commercial spaceflight, nuclear power, and research testing systems has strengthened our ability to work with special operating conditions and non-standard fluid control requirements.
Deep sea exploration equipment
Subsea fluid control systems
Underwater hydraulic systems
Marine engineering equipment
Shipbuilding systems
Underwater testing equipment
Research institute test systems
Special industrial automation systems
Customized fluid control equipment
Reliable performance starts long before the final inspection.
At Huiyuan, our manufacturing work is supported by decades of experience in fluid control technology. We integrate technical development, production, and technical services rather than treating manufacturing as a simple assembly process.
For a customized deep sea solenoid valve, we first review the operating conditions. This includes the medium, pressure, temperature, electrical requirements, installation conditions, operating frequency, and other important information.
Based on the application, we determine the appropriate valve structure and discuss key interfaces with the customer. For non-standard products, the technical solution becomes the foundation for production.
Material selection is considered according to the working medium and environmental conditions. Sealing components, metal parts, electrical components, and other elements need to work together as a complete system.
The valve is manufactured and assembled according to the approved technical requirements. Dimensional accuracy, assembly quality, cleanliness, and correct component installation are important at this stage.
Before delivery, we carry out strict inspections covering performance, sealing, appearance, and other applicable requirements. The exact inspection items depend on the product type and technical agreement.
After inspection, products are prepared for shipment. We use moisture-resistant and shock-resistant packaging as appropriate. Depending on valve size and weight, packaging may include cartons, wooden cases, or pallets.
For standard products, delivery can normally be arranged relatively quickly. For customized products, the production schedule is determined after the technical solution and requirements have been confirmed.
Huiyuan was among the early companies in the regional industry to obtain ISO9001:2015, CE, SIL3 mandatory safety, and 3C mandatory certifications for explosion-proof electrical equipment. The company has also been recognized as a High-Tech Enterprise and a Contract-Abiding and Creditworthy unit.
These certifications and recognitions are important, but we believe day-to-day product quality is just as important. A certificate can show that a system exists. Consistent manufacturing, inspection, documentation, and technical communication are what make that system useful in real projects.
When customers contact us for a special valve, they are not simply buying a metal component. They are looking for a product that can fit into a larger system and perform its intended job reliably.
Our company grew from the former Solenoid Valve Branch of Xi'an Instrument Factory and was restructured into a joint-stock company in early 1994. We have accumulated decades of experience in fluid control products and special valve development.
We have long worked on special non-standard products. This is valuable when an underwater project has requirements that do not fit a standard catalog model.
Our valves have supported military, aerospace, commercial aerospace, nuclear power, shipbuilding, and research institute applications. These industries require careful attention to product reliability and technical details.
We combine technology development, manufacturing, and technical services. This allows us to communicate with customers from the early design stage through production and delivery.
Our quality policy is to establish and continuously improve the quality management system, develop first-class products, and provide efficient and high-quality services.
We understand that engineers do not want vague answers. When a customer sends us an inquiry, useful information such as working depth, pressure, medium, temperature, voltage, connection, flow requirement, and installation dimensions helps us provide a more accurate technical response.
If the application is not fully defined yet, that is also fine. We can start with the known conditions and identify which parameters still need confirmation.
A deep sea solenoid valve is an electrically controlled valve intended for underwater or other demanding environments. It uses electromagnetic force to control fluid flow and is designed according to the specific pressure, temperature, medium, sealing, material, and electrical conditions of the application.
Yes. Huiyuan has extensive experience with special non-standard valves and customized fluid control products. The final design depends on the customer's operating conditions and technical requirements.
Not necessarily. A standard industrial solenoid valve should not automatically be assumed suitable for deep underwater operation. External pressure, seawater exposure, sealing, electrical protection, materials, and installation conditions all need to be verified.
We recommend providing the working medium, internal pressure, external pressure or operating depth, temperature, required flow, voltage, valve function, connection type, installation dimensions, operating frequency, and any special environmental requirements.
Yes. Our product range includes fluid solenoid valves, electrically controlled valves, pneumatically controlled valves, pressure reducing valves, and special non-standard valves.
Production time depends on the model, material, specification, and customization level. Standard products can generally be delivered faster, while customized products require a technical review and production schedule after the solution is confirmed.
We perform inspections such as performance, sealing, and appearance checks before delivery. Additional inspection requirements can be discussed according to the product and technical agreement.
We normally use moisture-resistant and shock-resistant packaging. Cartons, wooden cases, or pallets can be selected according to the valve's size and weight to help protect the product during transportation.
Payment arrangements can be based on the cooperation between both parties and may include advance payment, payment before shipment, or terms agreed in the contract.
Yes. We have provided customized non-standard valves and testing-system solutions for research institutes. If your project is still in the development stage, we can review the known technical requirements and discuss a suitable fluid control solution.
A deep sea solenoid valve may look like a small component, but in an underwater fluid control system, its role can be critical.
The right valve is not simply the one with the correct connection size or electrical voltage. It is the valve whose structure, materials, sealing system, electrical design, and operating characteristics fit the actual environment.
At Xi'an Huiyuan Instrument Valve Co., Ltd., we bring decades of fluid control experience to these engineering challenges. Our background in aerospace, commercial spaceflight, nuclear power, shipbuilding, industrial control, and research equipment has given us extensive experience with specialized and non-standard valve products.
We do not believe every project should use the same valve. That is why we pay attention to the real working conditions and technical requirements before recommending a solution.
If you are developing underwater equipment, deep sea exploration systems, subsea fluid control equipment, marine machinery, or a research testing system, our team can review your requirements for a deep sea solenoid valve, underwater solenoid valve, or custom deep sea fluid control valve.
Tell us what the valve needs to do, where it will work, what fluid it will control, and what conditions it must withstand. From there, we can work with you on a practical valve solution.
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