Model: HY-SV-CR

Technical Parameters:

Nominal Diameter: DN6~25

Applicable Media: Liquid nitrogen, liquid oxygen, liquid hydrogen, liquefied natural gas, and other cryogenic media

Applicable Pressure: 0~1.6MPa, 0~2.5MPa, 0~4.0MPa, 0~4.0MPa

Product Structure: Step-by-step direct-acting structure

Operating Mode: Normally closed type

Operating Voltage: DC24V (AC220V optional)

Valve Body Material: 316L stainless steel

Sealing Material: PCTFE

Media Temperature: -196℃ (customizable to -253℃)

Electrical Interface: Hirschmann connector

Explosion-proof Rating: ExdbⅡCT4

Connection: Imperial pipe thread (other connection sizes can be customized)

Cryogenic solenoid valve

When I talk about a cryogenic Solenoid Valve, I am not talking about an ordinary solenoid valve  that simply happens to work at a lower temperature. Cryogenic service is different. The working medium may be  extremely cold, the material can behave differently, sealing becomes more important, and even a small design  detail can affect the reliability of the whole fluid control system.

At Xi'an Huiyuan Instrument Valve Co., Ltd., we have spent decades working in fluid control. Our company was  formerly the Solenoid Valve Branch of Xi'an Instrument Factory and was restructured into a joint-stock company  in 1994. Since then, we have continued to develop and manufacture fluid solenoid valves, electrically controlled  valves, pneumatically controlled valves, Pressure Reducing Valves, and special non-standard valves.

Our products are used in demanding fields such as aerospace, commercial spaceflight, nuclear power,  shipbuilding, industrial equipment, and scientific research. This experience has taught me one important lesson:  the best valve is not always the valve with the most features. It is the valve that matches the real working  conditions of the system.

That is how I approach our cryogenic solenoid valve. I focus on dependable fluid shut-off and  control, suitable materials and sealing, accurate electrical operation, practical installation, and inspection  before delivery. For special applications, I also work with customers on customized and non-standard valve  solutions.

1. What Is a Cryogenic Solenoid Valve?

A cryogenic solenoid valve is an electrically operated valve designed for fluid control in low-temperature or  cryogenic service. In simple terms, it uses an electrical signal to control whether a fluid passage is open or  closed.

The basic idea is easy to understand. When the solenoid coil receives the correct electrical signal, it creates  magnetic force. This force moves an internal valve component. The movement changes the fluid path and allows the  valve to perform its designed control function. When the electrical condition changes, the internal mechanism  returns to its specified position.

The difficult part is not understanding this basic principle. The difficult part is making the valve perform  properly when the working environment becomes cold, demanding, or highly specialized.

At low temperatures, materials can contract. Some sealing materials can lose flexibility. Lubrication conditions  can change, and the temperature difference between the cold fluid and the surrounding environment can create  additional design challenges. Because of this, I do not recommend selecting a cryogenic valve simply because a  supplier says it is a "low temperature valve."

I first look at the actual application. What fluid is being controlled? What is the operating temperature?  What pressure will the valve see? What electrical power is available? How often will the valve operate? What  type of connection is required? Is the valve installed inside a protected system or exposed to a demanding  environment?

These questions help determine whether a particular cryogenic solenoid valve is suitable and  what configuration should be used.

Cryogenic Valve Compared With a General Solenoid Valve

Consideration

Cryogenic Solenoid Valve

General Purpose Solenoid Valve

   Source: Xi'an Huiyuan Instrument Valve Co., Ltd. product positioning and engineering experience supplied for    this product page. This table is a practical application comparison and is not a universal specification for    all valve manufacturers.  

For that reason, I treat the cryogenic solenoid valve as a complete engineering product rather than simply a  small electrical component.

2. How Our Cryogenic Solenoid Valve Works

The working principle is based on electromagnetic control. The valve contains a solenoid coil and an internal  moving mechanism. When the coil is energized, the magnetic field creates a force that moves the internal  component. This changes the flow passage.

Depending on the valve configuration, the normal position can be designed according to the control requirements.  The valve may be required to remain closed until an electrical signal is received, or it may use another  operating arrangement defined by the system.

I always recommend confirming this point during technical discussions because the normal state of a valve can be  important for system safety and control logic.

Simple Operating Process

1. The control system sends an electrical signal to the solenoid coil.

2. The coil produces magnetic force.

3. The internal moving part changes position.

4. The fluid passage opens or closes according to the valve design.

5. The control system changes the electrical signal when the operating condition changes.

6. The valve returns to its specified position through the designed mechanism.

In a real cryogenic system, however, there is more to consider. The valve has to manage the transition between  the cold working medium and the surrounding environment. The body, internal parts, seals, electrical components,  and connection structure all need to work together.

This is why our technical discussions normally begin with application information rather than a product name  alone. A customer may tell me, "I need a cryogenic solenoid valve," but that is only the starting point. I need  to understand what the valve will actually do.

Information I Normally Confirm Before Production

Parameter

Information to Confirm

Reason

   Source: Xi'an Huiyuan Instrument Valve Co., Ltd. technical and product information supplied for this page.    Exact parameters must be confirmed according to the final product specification.  

3. Key Features I Focus On in Cryogenic Fluid Control

When customers ask me what makes a good Low temperature solenoid valve, I do not point to one  single feature. Reliable operation comes from many small decisions made during design, material selection,  manufacturing, assembly, and inspection.

Low Temperature Application Design

The first consideration is the working temperature. A material that performs well at room temperature may not  behave in exactly the same way when exposed to very low temperatures. Therefore, the valve configuration must be  considered according to the actual cryogenic working condition.

Reliable Fluid Shut-Off

For many systems, the valve's main job is simple: stop the fluid when the control system tells it to stop.  Proper shut-off and sealing are therefore important parts of the product evaluation.

Electrical Operation

Electrical control allows the valve to become part of an automatic system. It can receive commands from a  controller or other electrical equipment, which makes it useful in automated test systems, industrial equipment,  aerospace equipment, and specialized fluid control systems.

Special Material and Sealing Considerations

Material selection becomes especially important in cryogenic service. I consider the working medium,  temperature, pressure, compatibility requirements, and customer specifications before confirming the final  material and sealing solution.

Non-Standard Design Support

Many customers in aerospace and research do not have a simple off-the-shelf requirement. They may need a special  size, connection, material, control voltage, installation arrangement, or other modification.

We have long been involved in special non-standard valve products. This means I can discuss the technical  problem first and then work toward a suitable valve configuration.

Pre-Delivery Inspection

Before shipment, we inspect applicable performance, sealing, appearance, and other requirements. I consider this  an essential step because the customer should not have to discover basic manufacturing problems after the product  arrives.

4. Why Cryogenic Solenoid Valves Need Careful Engineering

Cryogenic service is not simply "normal service but colder." The temperature can affect almost every part of a  valve. This is one reason why customers should be careful when comparing products from different suppliers.

One common issue is material behavior. Materials can change dimension as temperature changes. Sealing parts can  also become less flexible. If the design does not properly account for these changes, sealing and movement may  become difficult.

Another issue is thermal movement. A valve may connect a very cold fluid system with equipment at a much warmer  surrounding temperature. Different parts of the valve can experience different temperatures. This needs to be  considered when the valve structure is designed.

Electrical components also need attention. The coil and electrical interface must match the control system, while  the overall valve arrangement needs to suit the intended environment.

I also pay attention to maintenance and installation. A technically good valve can still cause trouble if it  cannot be installed correctly in the customer's equipment. Connection dimensions, mounting direction, available  space, and access for inspection should therefore be considered early.

Our Engineering Approach

My approach is to divide the problem into several basic questions:

• What fluid is being controlled?

• How cold will the working condition be?

• What pressure will the valve experience?

• What does the valve need to do when energized?

• What should happen when power is removed?

• How will the valve connect to the equipment?

• What sealing performance is required?

• Does the customer need a standard or customized design?

• What inspection and acceptance requirements apply?

This process may sound basic, but it prevents a common purchasing mistake: choosing a valve from a product  picture without checking whether its real operating conditions match the application.

Standard Product or Custom Valve?

Project Type

Standard Valve

Customized Valve

   Source: Xi'an Huiyuan Instrument Valve Co., Ltd. application experience and product information supplied for    this page. The suitability of a standard or customized valve must be determined from the actual system    requirements.  

5. Applications of Our Cryogenic Solenoid Valve

Our cryogenic solenoid valve technology is aimed at specialized fluid control applications.  Because every project has different conditions, I always recommend technical confirmation before final selection.

Aerospace and Commercial Spaceflight

Aerospace systems can require highly specialized fluid control components. We have experience supplying special  valves for aerospace and commercial spaceflight applications, including products and fluid control systems  adapted to commercial rockets and satellites.

In these projects, the valve may become one small part of a much larger system. This makes communication between  the valve manufacturer and system designer especially important.

Cryogenic Test Equipment

Research and development facilities often need valves for experimental equipment. Test systems can have unusual  pressure, temperature, connection, or control requirements, so customized non-standard valves can be useful.

Industrial Gas and Fluid Systems

Low temperature fluid control can also be found in industrial equipment and specialized gas or fluid systems.  Whether our valve is suitable depends on the actual medium, pressure, temperature, and system design.

Nuclear Power and Specialized Energy Equipment

We have experience providing specialized valves for nuclear power applications. These systems often require  careful product selection and quality control. Any valve used in such an application must be evaluated against  the project's specific technical and regulatory requirements.

Shipbuilding and Marine Equipment

We have also provided specialized control valves for shipbuilding applications. Where low temperature fluid  control is required, a suitable cryogenic valve can be considered as part of the overall equipment design.

Industrial Automation

Solenoid valves are widely used in automation because an electrical signal can control fluid flow quickly and  conveniently. For specialized low temperature automation, the valve configuration needs to match the working  environment.

In short, I see the biggest opportunity for this product in applications where ordinary fluid valves are not  enough and the customer needs controlled fluid isolation under low temperature conditions.

6. How We Manufacture and Inspect the Valve

A reliable valve does not come from one manufacturing step. At Huiyuan, technology development, production, and  technical service are closely connected. This allows us to handle both standard valve orders and more complex  non-standard projects.

Technical Review

I begin by reviewing the customer's requirements. For a cryogenic application, I pay particular attention to  the working medium, temperature, pressure, control signal, installation conditions, connection requirements,  and sealing expectations.

Design and Configuration

Once the requirements are clear, the valve configuration can be determined. If the customer needs a special  connection, unusual dimensions, or other non-standard features, these requirements are included in the technical  solution.

Material Selection

Material selection is not something I treat as a simple purchasing decision. The selected materials need to be  considered in relation to the working fluid and temperature conditions. Sealing materials also need to be  evaluated for the intended service.

Manufacturing and Assembly

The valve components are processed and assembled according to the approved technical requirements. Good assembly  matters because the final performance depends on the interaction of the body, internal components, seals, and  electrical parts.

Performance and Sealing Tests

Before delivery, we perform applicable performance and sealing inspections. Appearance and other agreed  requirements are also checked. For customized projects, inspection requirements can be discussed during the  technical and contract stages.

Packaging and Shipment

Once the product passes the required inspections, we prepare it for shipment. Depending on size and weight, we  may use cartons, wooden cases, or pallets. Moisture-resistant and shock-resistant packaging is used to help  protect the product during transportation.

Production time depends on the model, material, specification, quantity, and customization level. Standard  products can normally be arranged for relatively fast delivery, while customized products require a production  schedule after the technical solution has been confirmed.

Our Quality and Certification Background

Huiyuan has established a quality management system and has obtained ISO 9001:2015 certification. The company has  also obtained CE certification and applicable SIL3 mandatory safety certification and 3C mandatory certification  for explosion-proof electrical equipment.

These certifications are part of our quality management background. However, I do not treat a certificate as a  substitute for product testing. The actual inspection and certification requirements for a particular cryogenic  valve should always be confirmed according to its final application and specification.

7. Why Choose Huiyuan for a Custom Cryogenic Solenoid Valve?

If you are only looking for the lowest price on a standard valve, we may not always be the right supplier.  If you need a manufacturer that understands fluid control and can discuss a specialized valve around your actual  application, that is where I believe Huiyuan has a clear advantage.

Our company has decades of experience in the fluid control field. We started from the Solenoid Valve Branch of  Xi'an Instrument Factory and have developed into a high-tech enterprise integrating technology development,  production, and technical services.

Our product range covers fluid solenoid valves, electric control valves, pneumatic control valves, pressure  reducing valves, and special non-standard valves. We have provided specialized products for aerospace,  commercial spaceflight, nuclear power, shipbuilding, military-related applications, and research institutes.

This background is important for cryogenic projects because the customer may not simply need a catalog product.  The customer may need technical discussion, design adjustment, special materials, customized connections, or a  testing arrangement that fits a larger system.

What I Can Help With

• Selection of a suitable cryogenic solenoid valve configuration

• Customized low temperature solenoid valve solutions

• Special non-standard valve development

• Electrical control and connection requirements

• Fluid medium and sealing requirement review

• Aerospace and commercial spaceflight valve applications

• Research and cryogenic test equipment

• Performance and sealing inspection before delivery

• Packaging and international shipment coordination

• Technical communication before and after the order

We also follow the company principles of innovation, quality, and service. Our quality policy is based on  establishing and continuously improving the quality management system, developing high-quality products, and  providing efficient technical services.

Our electric control valves have received recognition including Advanced Quality Product and Xi'an Famous Brand  Product awards. We continue to invest in technology and high-end applications because we want to build long-term  capability, not simply increase the number of products in a catalog.

8. Cryogenic Solenoid Valve FAQ

What is the difference between a cryogenic solenoid valve and a normal solenoid valve?

The main difference is the intended working environment. A cryogenic solenoid valve is designed with low  temperature service in mind. Material behavior, sealing, thermal movement, and system installation all need to be  considered. A normal Industrial Solenoid Valve may not be suitable for cryogenic service simply because it has  the same basic electromagnetic operating principle.

What information do you need to select a cryogenic solenoid valve?

I normally need the working medium, operating temperature, pressure, valve size, connection type, electrical  voltage, control method, installation conditions, flow requirement, sealing requirements, quantity, and applicable  standards. If the valve is being used in aerospace or research equipment, I also recommend providing the system  requirements and any special acceptance criteria.

Can Huiyuan manufacture a custom cryogenic solenoid valve?

Yes. Special non-standard valves are one of our long-term product areas. We can discuss customized dimensions,  materials, connections, electrical requirements, and other project-specific conditions. The final configuration  depends on technical review.

Can your cryogenic valve be used in aerospace applications?

We have experience supplying special fluid control valves for aerospace and commercial spaceflight applications.  However, aerospace systems are highly application-specific. We therefore recommend a technical review before  confirming whether a particular valve configuration is suitable for your system.

Can the valve be used for cryogenic gas?

The answer depends on the specific gas, temperature, pressure, sealing requirements, and valve configuration.  Please provide the actual working medium and conditions so we can evaluate the appropriate design.

Can the valve be used for cryogenic liquid?

Potentially, depending on the working conditions and final design. Cryogenic liquid applications require careful  consideration of temperature, pressure, material compatibility, sealing, and installation. We recommend confirming  these conditions before selecting the valve.

Do you provide testing before shipment?

Yes. We conduct applicable performance, sealing, appearance, and other inspections before delivery. Specific  inspection and acceptance criteria can be agreed according to the product specification and customer project.

How long does production take?

It depends on the model, material, specification, quantity, and customization requirements. Standard products can  normally be arranged for relatively fast delivery. Customized valves require additional time for technical  confirmation and production.

How do you package cryogenic solenoid valves for shipment?

We normally use moisture-resistant and shock-resistant packaging. Depending on the valve size and weight, cartons,  wooden cases, or pallets can be used. The final packaging method is selected according to the product and shipping  requirements.

What payment methods do you accept?

Payment terms can be agreed according to the cooperation arrangement. Options may include advance payment,  payment before shipment, or payment terms specified in the contract.

Can you provide technical support after delivery?

Yes. Technical service is an important part of our business model. If questions arise during installation or  application, customers can contact us with the relevant product information and operating conditions so that we  can help review the issue.

Final Thoughts From the Manufacturer

I have worked around fluid control products long enough to know that a valve should never be selected from a name  alone. This is especially true for cryogenic service.

A cryogenic solenoid valve has to match the working medium, temperature, pressure, electrical  control, sealing requirements, installation environment, and overall system design. When the application is  specialized, a customized solution can often make more sense than forcing a standard valve into a system where  it does not really fit.

At Xi'an Huiyuan Instrument Valve Co., Ltd., we combine fluid control experience, manufacturing capability,  technical development, quality management, and engineering service. Our long-term work in aerospace, commercial  spaceflight, nuclear power, shipbuilding, and research equipment has given us practical experience with demanding  fluid control projects.

If you are sourcing a cryogenic solenoid valve, low temperature solenoid valve,  cryogenic fluid control valve, or custom cryogenic solenoid valve, I recommend  starting with your actual operating conditions rather than only sending a product name.

Tell us the medium, temperature, pressure, electrical requirements, connection, installation conditions, and  quantity. We can then review the application and discuss a suitable valve configuration with you.

For us, the goal is not simply to manufacture another valve. The goal is to provide a fluid control component  that makes sense for the customer's equipment, is manufactured according to the agreed requirements, is inspected  before delivery, and can be supported throughout the project.