Company Overview and Mission

HIFLUX Co., Ltd., founded in 2010 in Daejeon, South Korea, specializes in manufacturing high-pressure valves, fittings, and hydraulic equipment with a focus on hydrogen refueling station components to support carbon neutrality. The company emphasizes innovation, R&D, and global competitiveness, holding recognition as a hydrogen-specialized company by the Korean Ministry of Trade, Industry and Energy in 2024.

Product Range and Specifications

HIFLUX offers a comprehensive product portfolio including needle valves, check valves, ball valves (including actuated types), relief valves, air operated valves, high temperature valves, control valves, fittings, tubes, pressure regulators, safety heads, rupture discs, pressure gauges, thermocouples, tooling sets, and tube supports. Pressure ratings span from 3,000 psi to 150,000 psi. Materials used include Stainless Steel 316, Hastelloy C276, Inconel variants, Nickel 200, and Titanium. The catalog numbering system encodes valve type, pressure rating, stem type, tube size, and special features such as anti-vibration fittings.

Technical Features and Performance

• Metal-to-metal seating for enhanced sealing durability
• Corrosion resistance tailored for high-pressure hydrogen environments
• Operating temperature range from -40°C to 85°C
• Water pressure strength up to 231 MPa
• Special sealing methods to prevent hydrogen embrittlement, validated by KS certification
• Reliable packing and O-ring materials (EPDM, Teflon) designed for hydrogen service
• Non-rotating stem design to prevent galling and extend valve life

Certifications and Patents

• KS certification for hydrogen refueling station manual valves (2023)
• ISO 9001, 14001, and 45001 certifications for quality, environmental, and health management
• CE certification for European compliance
• Patents covering double-sealed check valves, high-pressure valves, and high-temperature valves
• Recognition as a hydrogen-specialized company by the Korean government (2024)
• Venture Business Certification and Small Giant Company designation

Quality Assurance and Compliance

Products comply with international standards including the EU ATEX Directive 2014/34/EU for explosive atmospheres. Certification bodies such as ICIM S.p.A. have validated relief valves for safety and performance. Technical modifications require declaration to maintain certification validity.

Catalog Numbering and Ordering System

The catalog numbering system encodes key product attributes: type, pressure rating, component type, material, tube size, and options. Examples include:

• NV60VS06-A: Needle Valve, 60,000 psi, Vee Stem, 3/8 inch, Angle Type
• AOV60CS04-A: Air Operated Valve, 60,000 psi, Normally Closed, 1/4 inch, Angle Type
• FA60GS04-AV: Fitting Accessory, 60,000 psi, Gland, 1/4 inch, Anti-Vibration Type

Summary of Key Parameters and Limitations

• Pressure ratings: 3,000 psi to 150,000 psi
• Operating temperature: -40°C to 85°C
• Materials selected for corrosion resistance and hydrogen compatibility
• Sealing methods adapted to prevent hydrogen embrittlement
• Compliance with international safety and quality standards

High-Pressure Needle Valves: Technical Specifications

Designed primarily for hydrogen fuel stations and other high-pressure applications, these valves offer precise flow control and reliable sealing under extreme pressures.

Valve Types and Configurations

• Straight Type: Inline flow control valves
• Angle Type: 90-degree outlet for directional flow
• 3-Way Valves: Two variants (3Way/1on and 3Way/2on) for controlling two outlets from one inlet, enabling bypass and continuous operation
• Panel Type: For panel mounting (2-5 mm thickness), available in limited sizes (1/4", 3/8", 9/16")

Pressure Ratings and Materials

Pressure ratings range from 10,000 psi to 150,000 psi. Valves are made from corrosion-resistant STS316 stainless steel to ensure durability and safety in hydrogen environments.

Key Features

• Non-rotating stem to prevent galling and extend valve life
• Metal-to-metal sealing for enhanced seat life and reliability
• Optimized packing design for leak-proof performance
• Stem types include regulating stems for flow control and vee stems for shut-off
• KS certification (KGS-23-0003) for hydrogen service

Dimensions and Installation

Detailed dimensional tables specify valve body sizes, mounting hole sizes, block thickness, closed height, and tightening torque values. Dimensions are provided in millimeters and inches and are approximate. Thread standards include NPT and PT, with custom options available.

Flow Characteristics

Valve orifice sizes and flow coefficients (Cv) are specified per model, supporting selection based on flow rate and pressure. Cv values range from 0.03 to over 2.5 depending on valve size and pressure.

Applications

Suitable for hydrogen fuel stations and industrial applications requiring precise flow control and corrosion resistance under extreme pressures.

Summary of Critical Parameters

Recommendations and Notes

• Verify all dimensions before installation as they are approximate
• Contact customer service for custom thread standards or specifications
• Recommended panel thickness for panel valves is 2-5 mm
• Apply proper tightening torque to ensure sealing and prevent damage

High-Pressure Valves and Fittings: Technical Details

Pressure Ratings and Valve Sizes

• Pressure ratings from 10,000 psi to 150,000 psi
• Valve sizes include 1/8", 1/4", 3/8", 1/2", 9/16", 3/4", and 1"
• Catalog numbers (e.g., H1502, H2004) correspond to size and pressure

Connection Types and Port Configurations

• Sleeve Type Connections: For 10,000 and 15,000 psi on pipe sizes 1/8" to 1/2", stainless steel tubing recommended
• Medium Pressure Connections (20,000 psi): Collar and nipple within gland; nipples can be custom ordered or processed with tooling sets
• High Pressure Connections (30,000 / 60,000 psi): Collar and nipple with cone and threaded connection for reliable sealing under high pressure and temperature
• Ultra High Pressure Connections (100,000 / 150,000 psi): Collar and nipple with cone and thread method for optimal sealing and quick configuration

Dimensional Data and Mounting Details

• Includes valve closed height, mounting hole sizes, block thickness, handle and stem sizes, inlet/outlet port sizes, and packing details
• Hex sizes for stem glands and components specified for assembly and maintenance

Recommended Torque and Bend Radius

• Torque values provided for assembly, especially for glass-impregnated Teflon packing, with ±10% tolerance
• Minimum bend radius for tubing specified by size and pressure rating to maintain integrity

Materials and Standards

• Stainless steel tubing and fittings for high-pressure durability
• Support for NPT and PT thread standards; custom production available

Technical Support

• Customer service contact details provided for inquiries and custom requests

Critical Information Summary

• Match valve pressure ratings and sizes correctly for safety
• Select connection types according to pressure rating (Sleeve, Collar & Nipple, Cone & Thread)
• Verify dimensions before installation due to possible slight variations
• Apply recommended torque and respect bend radius for tubing longevity
• Use stainless steel components to ensure durability in high-pressure environments

Conclusion

HIFLUX Co., Ltd. delivers advanced high-pressure valves and fittings engineered for hydrogen and other demanding industrial applications. Their products combine certified safety, patented technologies, and robust materials to ensure reliability, corrosion resistance, and long service life. Detailed specifications, dimensional data, and a structured catalog numbering system facilitate precise product selection and installation worldwide.