Model: HY-PSV-HP-AN

Technical Parameters:

Valve Body Material: 06Cr19Ni10/14Cr17Ni2

Sealing Material: Polytetrafluoroethylene (PTFE)

Working Medium: Gas, Liquid

Working Pressure: 0~15MPa

Opening Pressure: ≤1.2MPa

High pressure angle safety valve

When a pressurized system needs reliable protection, the Safety Valve is one of the small components that can make a very big difference. Our High Pressure Angle Safety Valve is designed for fluid systems where pressure protection, stable opening performance, good sealing, and dependable operation are important.

At Xi'an Huiyuan Instrument Valve Co., Ltd., we have worked in the fluid control field for decades. We manufacture fluid Solenoid Valves, electrically controlled valves, pneumatically controlled valves, Pressure Reducing Valves, safety valves, and various special non-standard valves. Our products are used in demanding fields such as aerospace, commercial spaceflight, nuclear power, shipbuilding, industrial equipment, and research testing systems.

We know that a High pressure safety valve is not simply a piece of metal installed on a pipeline. It is part of a pressure protection system. The valve needs to respond at the right pressure, seal properly during normal operation, and provide a controlled relief path when pressure becomes too high.

Our High Pressure Angle Safety Valve uses an angle-type body configuration to provide a practical flow path for certain high-pressure installations. Depending on the application, the valve can be developed around the customer's medium, pressure requirements, connection arrangement, installation space, material requirements, and testing standards.

Because pressure safety is closely related to the complete system, we prefer to confirm the actual operating conditions before recommending a final configuration. This is particularly important for high-pressure gas, aerospace equipment, pressure vessels, test systems, and other demanding applications.

1. What Is a High Pressure Angle Safety Valve?

A High Pressure Angle Safety Valve is a pressure protection device designed to help prevent a pressurized system from exceeding its allowable pressure under defined operating conditions.

The basic idea is quite easy to understand. Imagine a sealed vessel or pipeline containing pressurized gas or liquid. Under normal conditions, the pressure stays within the planned operating range. But if pressure rises because of abnormal operation, heating, blocked flow, equipment failure, or another overpressure event, the system needs a way to release excess pressure.

That is the job of the safety valve.

When the system reaches the valve's specified set pressure, the force produced by the fluid pressure can overcome the valve's closing force. The valve opens and provides a relief path. Once the pressure falls to an appropriate level, the valve moves back toward its closed position.

API identifies sizing, selection, and installation as important parts of pressure-relieving device engineering. API 520 specifically provides procedures for sizing and selecting pressure-relieving devices, while API 520 Part II addresses installation.

The word angle describes the body arrangement of the valve. Instead of using a straight-through body, the inlet and outlet are arranged at an angle. This can be useful when the pipeline layout, discharge direction, equipment connection, or installation space makes an angle configuration more practical.

For this reason, our angle safety valve is not only about pressure. It is also about fitting the valve into the customer's actual system.

Basic Operating Process

System Condition

Valve Response

Main Purpose

Source: General pressure-relief principles summarized from API pressure-relieving device guidance. Actual valve behavior depends on the specific design and application.

2. How Our High Pressure Angle Safety Valve Works

The working principle of our high pressure safety valve is based on a balance between system pressure and the closing force of the valve mechanism.

During normal operation, the valve element is held against the valve seat. The sealing area prevents the working medium from escaping through the relief outlet. The valve remains closed as long as the system pressure stays within the designed range.

When pressure rises to the specified set point, the force acting on the valve element increases. Once this pressure force becomes sufficient to overcome the closing force, the valve opens.

The excess medium can then pass through the designed discharge path. Depending on the system, the discharged medium may be directed to a safe location, a return line, a collection system, or another approved pressure relief path.

After the pressure drops, the valve can return toward the closed position. The exact opening and reseating behavior depends on the valve design, medium, pressure conditions, spring characteristics, flow requirements, and system configuration.

This is why selecting a safety valve should never be based only on the words “high pressure.” We normally need to understand the actual pressure range, medium, temperature, required relief capacity, connection type, installation position, and discharge arrangement before confirming a suitable model.

Important Selection Parameters

Parameter

Why We Need It

Source: API 520 addresses sizing and selection of pressure-relieving devices and emphasizes appropriate engineering analysis for pressure relief applications.

3. Main Features of Our High Pressure Angle Safety Valve

High Pressure Protection

The main purpose of this valve is to provide controlled pressure protection. We focus on stable opening performance and reliable sealing so that the valve can perform its intended safety function under the specified working conditions.

We do not use one fixed pressure value for every product. High pressure applications can be very different from one another, so the actual set pressure and working pressure need to be confirmed according to the customer's system.

Angle Body Design

The angle body provides a different flow and installation arrangement compared with a straight safety valve. In some equipment layouts, this makes pipeline routing easier and can help the valve fit into a limited installation space.

This design can be particularly useful for equipment where the discharge direction needs to be separated from the inlet direction or where the surrounding pipeline configuration requires an angled outlet.

Reliable Sealing

A safety valve must remain properly closed during normal operation. Good sealing depends on many details, including the valve seat, sealing surface, machining accuracy, material compatibility, spring or closing mechanism, and assembly quality.

We therefore include sealing inspection as part of our delivery inspection process.

Controlled Opening Performance

For pressure protection equipment, opening at the appropriate pressure is one of the most important performance requirements. We inspect the opening behavior according to the agreed product specification.

Flexible Configuration

Different customers may require different connections, materials, pressure ranges, sealing arrangements, or installation dimensions. Our experience with non-standard valve products allows us to discuss these requirements during the engineering stage.

Suitable for Special Fluid Control Systems

Our products are not limited to ordinary industrial pipelines. We have long worked with special valve applications for aerospace, commercial spaceflight, nuclear power, shipbuilding, and research institutions.

That experience is valuable when the application involves unusual working conditions or a valve that cannot simply be selected from a standard catalog.

4. Technical Advantages for High Pressure Applications

When customers ask us for a high pressure safety valve, they usually care about more than the maximum pressure. They want to know whether the valve can work correctly in their real system.

We therefore pay attention to several technical areas.

Pressure Setting

The set pressure is one of the key parameters of a safety valve. It needs to be selected in relation to the protected equipment and its allowable pressure. The exact value should be confirmed by the system designer or customer specification.

API 520 provides sizing and selection guidance for pressure-relieving devices, while ASME BPVC Section XIII includes rules covering overpressure protection of boilers, pressure vessels, and piping systems.

Flow Capacity

A pressure relief valve needs enough capacity for the expected relief condition. Simply choosing a valve with a high pressure rating does not automatically mean it has enough relief capacity.

Relief flow depends on factors such as the medium, pressure, temperature, valve orifice, discharge conditions, and the specific overpressure scenario.

Material Compatibility

Valve materials need to be compatible with the working medium and operating environment. Gas, liquid, corrosive media, high-temperature media, and special aerospace fluids can have very different requirements.

For customized projects, we confirm material requirements with the customer before production rather than making assumptions.

Sealing Performance

Good sealing reduces unwanted leakage during normal operation. This is especially important when the working medium is expensive, hazardous, highly pure, or difficult to handle.

Installation Arrangement

The angle-type body can provide practical advantages where the inlet and discharge lines need a particular orientation. We can review installation drawings or connection information when a customized configuration is required.

Inspection and Traceability

For demanding industrial projects, customers may require inspection records, pressure test results, material information, or other documentation. We can discuss the required documentation before production.

5. Where Is the High Pressure Angle Safety Valve Used?

Pressure protection is needed in many industries. The exact valve model and qualification requirements depend on the application, but our high pressure angle safety valve can be considered for a wide range of fluid control systems.

Petrochemical Industry

Petrochemical plants use many pressurized vessels, pipelines, pumps, compressors, and process systems. Pressure relief devices are an important part of overpressure protection in these systems.

API's pressure-relieving systems committee develops standards covering sizing, selection, installation, and pressure-relieving systems for refining and petrochemical applications.

Natural Gas Systems

Natural gas systems often involve pressurized gas and require careful control of pressure. A suitable safety valve can help protect equipment from excessive pressure when correctly selected and installed.

Power Industry

Power plants contain many pressure systems, including steam, water, gas, and auxiliary systems. Safety valves can be used as part of the overall pressure protection design.

Nuclear Power

Nuclear applications require particularly careful engineering, documentation, material control, testing, and quality management. Our company has experience providing specialized valve products for nuclear power-related applications.

For nuclear projects, the applicable project standards and qualification requirements must always be confirmed separately. We do not assume that a general industrial valve automatically meets a nuclear project's requirements.

Aerospace and Commercial Spaceflight

Aerospace systems often combine high pressure, compact installation, special fluids, strict weight or space requirements, and demanding environmental conditions.

Our company has developed special valves and fluid control systems for aerospace, commercial rockets, satellites, and related testing systems. This makes aerospace and commercial spaceflight an important application area for our customized valve business.

Shipbuilding

Ships contain many fluid systems, including fuel, cooling, compressed gas, hydraulic, fire protection, and auxiliary systems. Depending on the system design, high pressure safety valves can be used for pressure protection.

Pressure Vessels

Pressure vessels are another important application. ASME's pressure vessel standards include requirements and certification pathways related to pressure relief valves and overpressure protection.

Experimental and Research Equipment

Research institutes often need custom fluid systems for testing new equipment. These systems may use unusual pressures, gases, liquids, temperatures, or connection arrangements.

We provide customized non-standard valves for research institutes and can develop products around specific test-system requirements.

6. Manufacturing and Quality Inspection

For us, manufacturing a high pressure angle safety valve starts before machining. First, we need to understand what the customer expects the valve to do.

After technical requirements are confirmed, our production process can include material preparation, component machining, dimensional inspection, surface treatment when required, assembly, adjustment, pressure testing, sealing testing, opening pressure testing, reseating inspection, and final appearance inspection.

Our Typical Production Flow

1. Review customer technical requirements.

2. Confirm valve structure and connection details.

3. Confirm materials and sealing requirements.

4. Prepare materials and production documents.

5. Machine and inspect individual components.

6. Assemble the valve.

7. Adjust the required pressure response.

8. Perform pressure and sealing tests.

9. Perform opening and reseating checks according to specification.

10. Complete final inspection and prepare delivery documents.

ASME BPVC Section XIII specifically addresses overpressure protection and includes requirements related to design, materials, inspection, assembly, testing, marking, capacity, and flow resistance certification for covered pressure relief devices.

Typical Pre-Delivery Inspection

Inspection Item

What We Check

Purpose

Reference: API identifies pressure-relief device sizing, selection, installation, and seat tightness as key technical areas. ASME BPVC Section XIII also covers inspection and testing of pressure relief devices within its scope.

7. Production Cycle, Delivery, Payment and Packaging

Production Cycle

The production cycle depends on the actual product configuration. Standard safety valves can normally be arranged more quickly, while customized high pressure angle safety valves require technical confirmation before production.

The main factors include valve size, material, pressure range, connection type, sealing requirements, quantity, customization level, inspection requirements, and whether special testing or documentation is needed.

For a customized project, we first confirm the technical solution and then provide a production schedule based on the agreed order requirements.

Delivery Standard

Before delivery, we inspect the valve according to the agreed technical specification. Typical checks include pressure testing, sealing testing, opening pressure testing, reseating performance, appearance, and dimensional inspection where required.

Inspection reports and other delivery documents can be prepared according to the contract or customer requirements.

Payment Methods

For different projects, payment can be arranged by advance payment, payment before shipment, or other terms agreed in the sales contract.

For customized products, we normally confirm payment terms together with the technical specification, production schedule, and order quantity.

Transportation

We can arrange transportation by logistics service, express delivery, or dedicated freight depending on the order size, destination, urgency, and customer requirements.

Packaging

We normally use cartons, wooden cases, or pallets according to product size and transportation conditions. The valve is properly protected against moisture, vibration, impact, and handling damage.

For precision products or aerospace and research projects, we can discuss additional packaging requirements before shipment.

8. Why Choose Xi'an Huiyuan for High Pressure Safety Valves?

When buying a high pressure safety valve, the product itself is important, but the manufacturer behind it matters too.

At Xi'an Huiyuan Instrument Valve Co., Ltd., we have decades of experience 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.

Our business combines technology development, manufacturing, and technical service. We focus on fluid control products rather than treating valves as simple general-purpose hardware.

Our product range includes fluid solenoid valves, electric control valves, pneumatic control valves, pressure reducing valves, and special non-standard valves. This broad product experience helps us understand how different valves work together inside a complete fluid system.

We have also provided specialized valve products for aerospace, commercial spaceflight, nuclear power, shipbuilding, and research institutes. In commercial aerospace, we develop valves and fluid control systems for applications involving commercial rockets and satellites.

Another strength is our experience with non-standard products. Some customers know exactly what they need and can provide a drawing. Others know the operating conditions but need help developing the valve structure. In both cases, we can start from the actual engineering problem.

Our company has been recognized as a High-Tech Enterprise and a Contract-Abiding and Creditworthy unit, among other honors. We have also obtained ISO 9001:2015, CE, SIL3 mandatory safety, and 3C mandatory certification credentials in relevant areas.

Our quality policy is straightforward: establish and continuously improve the quality management system, develop first-class products, and provide efficient and high-quality services.

We believe that this practical approach is especially important for high pressure products. A valve should not only look good on a product page. It should be correctly selected, correctly manufactured, correctly tested, and correctly integrated into the customer's system.

High Pressure Angle Safety Valve Selection Guide

If you are contacting us about a high pressure angle safety valve, the following information will help us respond faster:

• Working medium: gas, liquid, steam, or special fluid

• Normal working pressure

• Required set pressure

• Required relief capacity or flow

• Working temperature

• Inlet and outlet connection type

• Valve installation direction

• Required valve material

• Sealing requirements

• Operating environment

• Quantity

• Applicable standards or customer specifications

• Technical drawings or system diagrams, if available

If you do not have every parameter ready, that is fine. Send us what you have. We can first review the application and identify the information that still needs to be confirmed.

Frequently Asked Questions

What is the difference between an angle safety valve and a straight safety valve?

The main difference is the body and flow-path arrangement. An angle safety valve has an angled inlet and outlet configuration, which can be useful when the pipeline layout or discharge direction requires a different arrangement.

Is the High Pressure Angle Safety Valve suitable for gas?

It can be developed for suitable gas applications, subject to the actual medium, pressure, temperature, flow, sealing, and discharge requirements. Gas service should always be confirmed during technical selection.

Can the valve be customized?

Yes. We have long experience with special non-standard valves. Depending on the project, we can discuss the pressure setting, material, connection, sealing structure, dimensions, installation arrangement, and testing requirements.

How do I choose the correct safety valve?

Start with the protected equipment and the actual overpressure scenario. Working pressure, allowable pressure, set pressure, medium, temperature, relief capacity, discharge conditions, and connection details are all important. API 520 provides recognized guidance for sizing and selection of pressure-relieving devices.

Can you supply high pressure safety valves for aerospace projects?

Yes. Aerospace and commercial spaceflight are important areas of our fluid control business. We have experience developing special valves and fluid control systems for aerospace equipment, rockets, satellites, and research testing systems. The final design and qualification requirements are confirmed for each project.

Can you provide customized valves for research institutes?

Yes. We have supplied customized non-standard valves and testing-system solutions for research institutes. If you have a drawing, system diagram, or technical requirement, our engineering team can review it.

What tests are performed before shipment?

Depending on the product specification, typical inspections include pressure testing, sealing testing, opening pressure testing, reseating checks, appearance inspection, and dimensional checks. Additional inspection or documentation can be agreed for special projects.

How long does production take?

There is no single production time for every high pressure angle safety valve. Standard products are normally faster, while customized products require technical review and production planning. We confirm the delivery schedule after the technical and commercial details are agreed.

How are high pressure safety valves packaged?

We normally use cartons, wooden cases, or pallets. Packaging is selected according to the valve size, weight, transportation method, and customer requirements. We also provide protection against moisture, vibration, and impact.

Can you provide inspection documents?

Yes. Inspection records and other technical documents can be supplied according to the agreed product specification and contract requirements.

Conclusion

A High Pressure Angle Safety Valve has a simple purpose but an important responsibility: helping protect a pressurized fluid system when pressure rises beyond the intended operating range.

The right valve is not selected by pressure rating alone. The medium, working pressure, set pressure, relief capacity, temperature, sealing requirements, connection, installation arrangement, and discharge conditions all matter.

At Xi'an Huiyuan Instrument Valve Co., Ltd., we combine decades of fluid control experience with manufacturing and technical service. We produce standard and customized safety valves for industrial equipment, petrochemical systems, natural gas systems, power equipment, nuclear power applications, ships, aerospace, commercial spaceflight, and research testing systems.

If you are looking for a high pressure angle safety valve manufacturer, a customized high pressure safety valve, or an angle-type pressure protection valve, contact us with your working conditions and technical requirements. We will review the application and discuss a practical valve solution with you.

Important: The exact pressure rating, set pressure, flow capacity, material, temperature range, dimensions, certification, and applicable standards must be confirmed according to the actual product specification and customer project. Industry standards such as API and ASME provide important engineering frameworks, but compliance with a particular standard or certification should not be assumed unless it is specifically confirmed for the supplied valve.