Seal Type Valve Balls
Precision Sealing Solutions For Industrial Valves
Specialized valve balls with soft-sealed and hard-sealed designs for zero leakage performance. Engineered for oil & gas, chemical processing, power generation and industrial automation applications.
Soft Seal Ball
PTFE and elastomer seats for zero leakage at lower pressures.
Hard Seal Ball
Metal-to-metal sealing for high temperature applications.
PTFE Seat
Excellent chemical resistance for corrosive media.
Stellite Ball
Wear-resistant overlay for severe service conditions.
Sealing Technology Solutions
Advanced Seal Designs For Industrial Valve Applications
Our seal type valve balls are designed to meet the most demanding industrial requirements, from low-pressure soft-sealed applications to high-temperature metal-seated systems. Precision engineering ensures reliable performance in oil & gas, chemical, power and marine applications.
Seal Type Options
Seal Type Categories
Explore our comprehensive range of soft-sealed and hard-sealed valve ball solutions for various industrial applications.
Soft-Sealed Valve Ball
Soft-sealed valve balls use PTFE or elastomer seats that conform to the ball surface, providing bubble-tight sealing at lower pressure ranges. Ideal for general industrial applications requiring zero leakage.
- • Zero leakage performance
- • Lower operating torque
- • Good chemical resistance
- • Cost-effective solution
Hard-Sealed Valve Ball
Hard-sealed (metal-seated) valve balls feature Stellite or tungsten carbide overlays for superior wear resistance in high temperature and high pressure applications.
- • High temperature capability
- • Excellent wear resistance
- • High pressure rating
- • Severe service applications
Technical Guide
Sealing Technology & Engineering Advantages
Understanding seal materials, designs and performance characteristics is essential for selecting the right valve ball sealing solution for industrial applications.
Soft Seal Performance
PTFE and elastomer seals provide excellent low-pressure sealing with zero leakage performance for general industrial applications.
Metal Seal Durability
Stellite and tungsten carbide overlays offer superior wear resistance for high-temperature and severe service environments.
Dual Seal Options
Combination seal designs available for applications requiring both high pressure and zero leakage performance.
Sealing Technology Process
Material Selection
Selecting appropriate seal materials based on application requirements.
Precision Machining
CNC machining for exact seal dimensions and surface finish.
Surface Coating
Applying wear-resistant coatings for metal seals.
Quality Testing
Sealing performance verification and quality assurance.
OEM Seal Solutions
Looking For Custom Seal Type Solutions?
Contact our engineering team for OEM valve ball manufacturing with custom seal designs, material selection and surface treatment for severe service applications.
Explore Our Seal Type Valve Balls
Discover our comprehensive range of precision-engineered seal type valve balls for industrial flow control applications. Each product is manufactured to meet the highest standards of quality and performance.
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![Hard-sealed Valve Ball]()
Hard-sealed Valve BallThe hard-sealed valve ball adopts a metal-to-metal sealing pair structure, and through high-precision CNC machining and surface strengthening treatments such as Stellite surfacing and tungsten
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![Soft-Sealed Balls]()
Soft-Sealed BallsSoft-sealed valve balls form a sealing surface by coating or inlaying elastic sealing materials such as PTFE, RPTFE, NBR, and PEEK on the surface of the ball. They rely on the deformation of elastic
Sealing Applications
Our precision-engineered seal designs provide reliable performance across various industrial sealing requirements, from soft-seated low-pressure applications to metal-seated high-temperature environments.
Zero Leakage
Advanced sealing technology ensures bubble-tight shutoff for critical applications requiring absolute zero leakage performance.
High Pressure
Metal-seated designs engineered for extreme pressure environments up to Class 2500 and beyond.
High Temperature
Specialized materials and coatings for service temperatures exceeding 600°C in demanding industrial applications.
Corrosive Media
Corrosion-resistant materials including Inconel, Hastelloy and Monel for aggressive chemical applications.
Soft Sealing
PTFE, RPTFE and PEEK seating materials for superior sealing performance in general service applications.
Metal Seating
Stellite and tungsten carbide overlays for severe service applications requiring wear resistance.
FAQ & Engineering Guide
Common Seal Type Questions
What is the difference between soft seal and hard seal valve balls?
Soft seal valve balls use PTFE or elastomer seats for zero leakage at lower pressures, while hard seal (metal seat) valve balls use Stellite or tungsten carbide for high temperature and high pressure applications.
Which seal type is best for high temperature applications?
Metal-to-metal seals are recommended for high temperature applications as they can withstand temperatures up to 600°C, while soft seals are typically limited to around 200°C depending on the material.
Can soft seal valve balls be used in corrosive environments?
Yes, specialized soft seal materials like PTFE with fillers or perfluoroelastomers provide excellent chemical resistance for corrosive applications. The valve ball material should also be selected for corrosion resistance.
