Nominal diameter: DN6
Structural type: Direct acting
Connection method: Plug in type (M24 * 1 external thread)
Model: HY-SV-UHP
Technical parameters:
Nominal diameter: DN6
Structural type: Direct acting
Connection method: Plug in type (M24 * 1 external thread)
Blasting pressure: ≥ 63MPa
Opening pressure: 0MPa~63MPa
Working temperature: ≤ 80 ℃
Working medium: 15 # hydraulic oil
Material: TC4
Voltage: DC24V
Leakage level: zero leakage
Control mode: normally closed
Ultra High Pressure Solenoid Valve for Demanding Fluid Control Systems
When I work on a high pressure fluid control project, I do not start with the valve catalog. I start with the system.
What fluid are we controlling? How high is the working pressure? What happens when the valve opens? What happens when it closes? How often will it operate? What kind of sealing is needed? What electrical signal will control it? And, perhaps most importantly, what happens if the valve does not perform as expected?
These questions become even more important when the application involves aerospace equipment, commercial spaceflight, research equipment, high pressure test benches, nuclear power systems, or other specialized machinery.
Our Ultra High Pressure Solenoid Valve solutions are developed for these kinds of demanding fluid control applications. At Xi'an Huiyuan Instrument Valve Co., Ltd., we have decades of experience in the fluid control field. Our company originated from the Solenoid Valve Branch of Xi'an Instrument Factory and was restructured into a joint-stock company in 1994.
Today, we combine technology development, manufacturing, and technical service. Our product range includes fluid solenoid valves, electrically controlled valves, pneumatically controlled valves, Pressure Reducing Valves, and special non-standard valves.
We have also worked on specialized fluid control products for aerospace, commercial spaceflight, nuclear power, shipbuilding, military-related applications, research institutes, and experimental testing systems.
For me, that background matters because a high pressure solenoid valve is rarely just a simple on-off component. It is part of a larger system. The body, internal parts, seals, electrical actuator, connections, manufacturing process, and testing method all have to work together.
This page explains how I approach the selection and development of an ultra high pressure solenoid valve, what makes high pressure valve design different, where these valves are used, and how we can support a customized project.
In simple terms, a solenoid valve is a valve controlled by electricity. When the electrical signal reaches the solenoid coil, the coil creates a magnetic field. This magnetic force moves an internal component and changes the fluid path.
The basic principle is quite simple. The difficult part is making the valve work correctly under demanding conditions.
When the pressure becomes very high, the forces acting on the valve body and internal components increase. The sealing system also becomes more important. A small problem that may not matter much in a low pressure system can become a serious problem in a high pressure system.
This is why I would never select an ultra high pressure solenoid valve based only on a product name or a single pressure number.
The actual pressure capability depends on the complete design. Material, wall thickness, connection design, internal geometry, sealing method, temperature, fluid properties, manufacturing quality, and qualification testing can all affect the final result.
Another important point is that "ultra high pressure" is not a universal pressure class that means exactly the same thing in every industry. Different manufacturers and industries may use the term differently.
Therefore, when a customer asks us for an ultra high pressure valve, I normally ask for the actual pressure requirement rather than assuming a particular value.
High pressure fluid shutoff
On and off fluid control
Pressure system switching
Test bench fluid path control
Gas or liquid isolation
Automated fluid system control
Aerospace fluid control
Research equipment fluid switching
Depending on the project, the valve can be designed as a normally closed or normally open configuration, or according to another specified operating arrangement.
Let me explain the working principle without making it unnecessarily complicated.
Inside the valve is an electrically controlled actuator. The main part is the solenoid coil. When the control system sends power to the coil, the coil creates a magnetic field.
The magnetic field moves an armature or plunger. That movement changes the position of the valve's internal sealing element.
In one state, the fluid path is blocked. In another state, the fluid path is open. Depending on the design, a spring or another mechanism returns the valve to its original position when the electrical signal is removed.
That sounds straightforward, but high pressure changes the engineering challenge.
Imagine trying to move a small internal part while fluid pressure is pushing against it. The pressure creates a force that the valve mechanism must handle. At the same time, the sealing surface must remain stable enough to prevent unwanted leakage.
That is why we consider the hydraulic or pneumatic forces, actuator design, sealing system, internal flow path, and material selection together.
A normally closed solenoid valve stays closed when the solenoid is not energized. When the electrical signal is applied, the valve opens according to its design.
A normally open solenoid valve works in the opposite basic way. The valve remains open without the electrical command and changes state when energized.
Which arrangement is better depends on the system. In a safety-related application, for example, the preferred default state may be different from a simple industrial automation application.
I therefore recommend deciding the normal state from the system's failure logic rather than choosing it simply because one version is more common.
The biggest difference between an ordinary solenoid valve and a specialized high pressure valve is not necessarily something you can see from the outside.
A high pressure valve needs careful control of the parts that contain pressure, the surfaces that seal the fluid, the connections that join the valve to the system, and the moving parts that control the flow.
The pressure-bearing structure must be designed around the actual operating conditions. This includes the body, internal cavities, connection area, and other pressure-loaded sections.
We do not treat pressure rating as an isolated number. We evaluate it together with temperature, fluid, material, connection, and required testing.
Sealing is one of the first things I look at in a high pressure valve.
The valve must prevent fluid from passing where it should not pass. The choice of seal, sealing surface, material, and assembly method can therefore be critical.
Before shipment, we perform relevant sealing and performance inspections according to the applicable product requirements.
The solenoid provides a simple way to connect the valve to an automated control system. Depending on the agreed design, the electrical interface can be matched to the customer's control requirements.
One of our strengths is special non-standard valve development.
A customer may need a special port arrangement, unusual installation dimensions, a specific material, a special sealing system, or a particular electrical interface. Instead of forcing the application to fit a standard valve, we can discuss a customized solution.
High pressure valves leave little room for careless manufacturing. Machining accuracy, cleanliness, assembly, surface condition, and inspection all matter.
We therefore treat manufacturing and testing as part of the product design, not as something added at the end.
When I compare two possible solenoid valve solutions, I do not look at price first. I first compare the factors that can affect whether the valve will actually work in the system.
Factor
Why It Matters
What I Confirm
Source: Huiyuan engineering and product selection practice. This table is a practical selection guide rather than a product specification. Final requirements must be confirmed against the customer's technical documentation.
Pressure | Determines pressure loading on the valve | Normal, maximum and required test pressure |
Working medium | Affects materials and seals | Gas, liquid, fuel, process fluid or special medium |
Temperature | Can change material and seal behavior | Minimum, normal and maximum temperature |
Connection | Must fit the existing system | Port size, thread, flange or special connection |
Electrical control | Determines how the valve operates | Voltage, current, signal and control method |
Leakage requirement | Important for pressure systems | Required internal and external leakage limits |
Operating cycle | Repeated switching affects valve design | Frequency and expected service cycles |
Material selection can look simple from the outside: choose stainless steel, titanium alloy, or another metal and start machining.
In real valve engineering, it is more complicated.
The material has to work with the fluid, pressure, temperature, manufacturing process, and sealing system. A material that performs well in one application may not be the right choice in another.
Titanium alloys are one example. ASTM B348/B348M-25 covers annealed titanium and titanium alloy bars and billets and includes a number of different grades. ASTM identifies Grade 5 as a titanium alloy containing 6 percent aluminum and 4 percent vanadium. [1]
This is useful information when discussing titanium valve construction, but it does not mean that every titanium solenoid valve uses Grade 5. The actual material grade should always be confirmed by the product drawing and material certificate.
ASTM Grade
Material Description
Potential Engineering Interest
Source: ASTM B348/B348M-25, Standard Specification for Titanium and Titanium Alloy Bars and Billets. The table summarizes selected grades from the ASTM scope and does not indicate which grade is used in every Huiyuan product. [1]
When stainless steel is the better technical and commercial choice, we can evaluate stainless steel. When titanium is more appropriate, we can discuss titanium alloy construction. The goal is not to make every valve from one material. The goal is to choose a material that makes sense for the actual application.
Grade 1 | Unalloyed titanium | Corrosion-resistant applications |
Grade 2 | Unalloyed titanium | Widely used commercially pure titanium grade |
Grade 5 | Titanium alloy, 6% aluminum and 4% vanadium | High-strength titanium alloy applications |
Grade 9 | Titanium alloy, 3% aluminum and 2.5% vanadium | Applications requiring a different alloy balance |
Grade 23 | Titanium alloy, 6% aluminum and 4% vanadium with extra low interstitial elements | Specialized material applications |
This is one of the most common questions I receive. My answer is simple: it depends on what the valve has to do.
Titanium can offer an attractive combination of strength, relatively low density, and corrosion resistance. Stainless steel, on the other hand, is available in many grades and is widely used for industrial valve construction.
Consideration
Titanium Alloy
Stainless Steel
Source: General engineering comparison based on ASTM titanium material specifications and common engineering material considerations. It is not a substitute for a material compatibility study. Actual performance depends on the specific alloy grade, manufacturing condition, fluid, temperature, pressure, and valve design. [1]
For a critical project, I would rather spend time checking the material than discover later that the wrong material was selected.
Weight | Generally lower density than stainless steel | Generally higher density |
Corrosion resistance | Very good for many environments | Depends strongly on grade and medium |
Strength | High for many titanium alloys | Varies significantly by grade |
Machining | Requires controlled machining practices | Generally familiar to many industrial manufacturers |
Material cost | Usually higher | Often more economical |
Typical reason for selection | Weight, corrosion behavior and specialized performance needs | Broad industrial use and cost effectiveness |
High pressure solenoid valves are useful in many industries, but the requirements can be very different from one application to another.
Aerospace systems often have strict requirements for weight, reliability, installation space, environmental conditions, and fluid control. We provide specialized valves and non-standard fluid control products for aerospace-related applications.
When a valve is intended for actual airborne equipment, the applicable environmental and qualification requirements should be identified by the customer program. I do not recommend assuming that a general industrial valve automatically qualifies for airborne use.
Commercial rockets and satellites require compact and reliable fluid control components. Depending on the system, solenoid valves may be used to control gases or liquids, isolate pressure sections, or manage test and operating sequences.
Test benches are a particularly good example of where customized valves can make sense. A test system may need to build pressure, hold pressure, isolate a chamber, switch a fluid path, or release pressure in a controlled sequence.
In such systems, I pay attention not only to the valve itself but also to the timing and logic of the complete test process.
Research equipment often has requirements that are difficult to find in a standard catalog. The pressure may be unusual. The working medium may be specialized. The installation space may be extremely limited.
This is where our experience with special non-standard valves becomes useful.
Nuclear power equipment has demanding requirements for fluid control, materials, testing, documentation, and system reliability. Any valve intended for such an application must be evaluated against the specific project requirements and applicable regulations.
Outside aerospace, high pressure solenoid valves can also be used in specialized industrial automation, pneumatic equipment, pressure systems, process equipment, and experimental machinery.
Application
Main Challenge
Key Information I Request
Source: Huiyuan application experience and product information supplied for this page. The table is an engineering planning guide, not a certification statement.
Aerospace | Weight, environment, fluid control and qualification | System specification and applicable qualification requirements |
Commercial spaceflight | Pressure, material compatibility and compact design | Fluid, pressure and operating envelope |
Test benches | Pressure switching and sealing | Test sequence, cycle frequency and pressure conditions |
Research equipment | Non-standard requirements | Drawing or preliminary technical specification |
Nuclear equipment | Strict project controls and documentation | Applicable standards and project quality requirements |
Industrial machinery | Automation and system integration | Control signal, connections and installation dimensions |
When I explain our manufacturing process to customers, I often say that quality starts before machining.
It starts with understanding the application.
We first review the working medium, pressure, temperature, electrical control, connection, installation space, required valve state, operating cycle, leakage requirements, and testing requirements.
If the customer already has a drawing, we review the drawing. If the project is still in the design stage, we can start with the available technical information.
The valve structure is developed around the application. The pressure-bearing areas, flow path, sealing arrangement, actuator, connections, and mounting requirements are considered together.
Materials are selected according to the working conditions. For specialized valves, this can include the body material, internal metal parts, spring materials, sealing materials, and electrical components.
High pressure components require careful machining. Dimensions, threads, sealing surfaces, internal passages, and connection areas need to follow the approved design.
After machining and inspection, the valve components are assembled. The internal moving parts and sealing elements need to be installed correctly so that the valve can operate as designed.
Before delivery, we conduct relevant performance, sealing, and appearance inspections. For customized projects, the inspection plan can be developed according to the agreed technical specification.
We select packaging according to valve size, weight, and transportation requirements. Moisture-resistant and shock-protective measures can be used. Cartons, wooden cases, or pallets may be selected depending on the product.
Our goal is simple: the valve should arrive at the customer's facility in the same condition in which it passed final inspection.
In a high pressure system, quality cannot be added after manufacturing. It has to be built into the process.
Huiyuan operates with a quality policy focused on establishing and continually improving a quality management system, developing high-quality products, and providing efficient technical services.
The company has reported passing ISO 9001:2015, CE, SIL3 mandatory safety, and 3C mandatory certifications for explosion-proof electrical equipment, according to the company information provided for this page.
Certification scope is important. I would never recommend taking a company-level certification statement and assuming that every product automatically has the same certification coverage. For a specific project, the applicable certificate, product model, version, and scope should be checked.
ISO describes ISO 9001 as a globally recognized quality management standard that defines requirements for establishing, implementing, maintaining, and continually improving a quality management system. [2]
That approach fits the way we work. We want quality to be part of the complete process: requirement review, design, purchasing, machining, assembly, inspection, testing, packaging, and technical service.
If you only need the lowest-cost standard valve, there are many suppliers in the market. Our value becomes clearer when the application is difficult.
We have decades of experience in fluid control and a long history of producing solenoid valves and special non-standard valves.
Our experience covers aerospace, commercial spaceflight, nuclear power, shipbuilding, specialized machinery, research institutes, and experimental testing equipment.
We also understand that engineering projects do not always arrive at our factory as a perfect drawing.
Sometimes a customer has a pressure requirement but has not finalized the valve structure. Sometimes the installation space is fixed. Sometimes the working medium requires a special material. Sometimes a research project needs a completely non-standard connection.
In those situations, I prefer to work through the technical problem with the customer.
Standard fluid solenoid valve solutions
High pressure solenoid valve development
Special non-standard valve design
Aerospace fluid control applications
Commercial spaceflight fluid control
Research institute equipment
High pressure test bench applications
Performance and sealing inspection
Technical communication and product selection
Customized production according to approved requirements
For me, the key advantage is that we can discuss both the valve and the system around it.
If you want us to evaluate a project, you do not need to prepare a 100-page document before contacting us.
The following information is enough to make the first technical discussion much more useful.
Information
Example of What to Provide
Source: Huiyuan engineering and quotation practice. The values in an actual quotation are determined by the customer's approved specification and the final product design.
If you have a drawing, send it. If you do not have a drawing, send the operating conditions. We can start from there.
Working medium | Gas, liquid, fuel, process fluid or special medium |
Operating pressure | Normal pressure and maximum working pressure |
Test pressure | Required pressure for product or system testing |
Temperature | Minimum, normal and maximum temperature |
Flow requirement | Required flow or other system flow information |
Electrical control | Voltage, signal and control method |
Valve state | Normally open or normally closed |
Connection | Port size, thread, flange or special connection |
Installation | Available space and mounting requirements |
Leakage requirement | Permitted leakage level or applicable standard |
Operating cycle | Switching frequency and expected service life |
Quantity | Prototype, small batch or mass production |
It is an electrically controlled valve designed for fluid systems that operate at very high pressure. The solenoid converts an electrical signal into mechanical movement to open or close the fluid path.
The maximum pressure is not a universal value for every model. It depends on the valve design, material, sealing system, connection, temperature, working medium, and required qualification. Please provide your pressure requirement so we can evaluate the correct configuration.
Yes. Customized non-standard valves are one of our important product areas. We can discuss special materials, connections, dimensions, electrical interfaces, sealing arrangements, and testing requirements.
Material selection depends on the application. Depending on the project, materials may include titanium alloys, stainless steels, and other suitable engineering materials. The final choice is based on pressure, temperature, fluid compatibility, mechanical requirements, and the customer's specification.
Yes. Titanium alloy can be considered for applications where its material characteristics are useful. The exact titanium grade must be confirmed during technical review.
We provide specialized fluid control products for aerospace and commercial spaceflight applications. Whether a particular valve is suitable for an aerospace program depends on the complete system requirements and applicable qualification criteria.
Yes. Test equipment is an important application for our customized valves. We can discuss the pressure sequence, fluid path, valve cycle, control method, connection, and installation requirements.
The answer depends on the final material and sealing configuration. Please provide the exact working medium so we can evaluate compatibility. I do not recommend assuming that a valve suitable for water or air is automatically suitable for fuel, oxidizing gas, corrosive fluid, or another special medium.
Either configuration may be possible depending on the design. The correct choice depends on how the system should behave when electrical power is removed.
We conduct relevant performance, sealing, and appearance inspections before delivery. For customized products, additional tests can be defined according to the agreed technical specification and inspection plan.
Production time depends on the model, materials, specifications, quantity, customization, and testing requirements. Standard products can normally be delivered faster. Customized high pressure valves require a production schedule after the technical solution is confirmed.
We use moisture-resistant and shock-protective packaging where appropriate. Depending on the size and weight, cartons, wooden cases, pallets, or other suitable packaging may be used.
That is fine. Send us the working medium, pressure, temperature, voltage, connection, installation space, and required function. We can use that information as the starting point for technical selection.
Choosing an Ultra High Pressure Solenoid Valve is not simply about finding the highest pressure number.
The right valve has to match the fluid, pressure, temperature, electrical control, sealing requirement, installation space, connection, operating cycle, and testing requirements.
That is how I approach valve selection at Huiyuan.
With decades of experience in fluid control and a strong background in special non-standard valves, we can support projects ranging from standard industrial fluid control to demanding aerospace, commercial spaceflight, nuclear power, research, and test equipment applications.
If you are searching for an ultra high pressure solenoid valve manufacturer, a high pressure solenoid valve for aerospace, a customized high pressure fluid control valve, or a valve for a high pressure test bench, send us your requirements.
You can send a drawing, specification, existing valve sample information, or simply the basic operating conditions. We will review the application and discuss a practical valve solution with you.
Xi'an Huiyuan Instrument Valve Co., Ltd.
Fluid control valve manufacturer specializing in solenoid valves, electric control valves,
pneumatic control valves, pressure reducing valves, and customized non-standard valves for
demanding applications.
Technical specification notice: Pressure ratings, test pressures, flow rates, electrical parameters, temperature ranges, leakage limits, service life, material grades, and qualification status are product-specific. They must be confirmed against the approved product drawing, technical specification, inspection plan, test records, and applicable certificates. The reference information on this page is provided for engineering context and does not replace the manufacturer's product specification.
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