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Home > Product > Ball Valve > Ball Valve Components & Materials > Ball (Materials: SS, Brass, PTFE-Coated)

Ball (Materials: SS, Brass, PTFE-Coated) – The Core Component That Defines Flow Control Precision

The ball inside a ball valve plays a crucial role in determining sealing efficiency, media compatibility, corrosion resistance, and operational durability. At Perfect Engineers, we manufacture and supply high-quality balls for our valves in SS304, SS316, Brass, and PTFE-coated variants, tailored to suit a wide range of fluid types, temperatures, and industrial environments.

Whether you’re dealing with corrosive chemicals, steam, water, compressed gases, or food-grade applications, choosing the right ball material ensures leak-free performance and a longer valve life.

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What Is the Ball in a Ball Valve?

The ball is the rotating, hollow sphere inside the valve body that controls flow by aligning or blocking the passage. When turned 90°, it either allows media to pass (open) or blocks it (closed). The material and surface finish of the ball directly affect:

  • Sealing performance
  • Pressure & temperature resistance
  • Corrosion and chemical compatibility
  • Friction and cycle life

Key Ball Material Options Offered

  1. Stainless Steel (SS304 / SS316) Balls
  • Corrosion-resistant, durable, and widely compatible
  • Ideal for chemical, steam, food, pharma, and high-pressure systems
  • SS316 offers higher pitting resistance than SS304
  • Suitable for water, oils, gases, solvents, and CIP fluids
  1. Brass Balls
  • Cost-effective option for low-pressure water, air, and gas systems
  • Machinable and suitable for potable water, HVAC, and irrigation
  • Not recommended for acidic or high-chloride environments
  1. PTFE-Coated Balls
  • PTFE (Teflon) coating provides anti-stick, chemical resistance, and low friction
  • Ideal for sticky, corrosive, or high-purity applications
  • Used in chemical dosing, food processing, biotech, and aggressive media handling

Material Comparison Table

MaterialCorrosion ResistanceTemperature RangeIdeal For
SS304MediumUp to 400°CGeneral industry, water, steam
SS316HighUp to 400°CChemicals, acids, seawater
BrassLow to MediumUp to 120°CHVAC, air, water, gas
PTFE-CoatedVery High-20°C to 180°CChemicals, food, pharma, sticky media

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Applications Based on Ball Material

ApplicationRecommended Ball Material
Clean water & airBrass or SS304
Corrosive chemicals & acidsSS316 or PTFE-coated
Food, dairy, & beverageSS316 or PTFE-coated (FDA grade)
Steam or high-temp mediaSS316 or metal-seated SS ball
Sticky or slurry-like mediaPTFE-coated (anti-stick)
Oil & gas systemsSS316 or metal-seated SS

How Ball Material Affects Valve Performance

  1. SS Balls withstand pressure and abrasion
  2. Brass Balls offer low-cost reliability for non-corrosive media
  3. PTFE-Coated Balls provide chemical barrier protection and prevent clogging or sticking
  4. The ball surface finish also impacts seal longevity and valve torque

FAQs – Ball Materials in Valves

Not always. PTFE-coated balls offer better chemical resistance and are useful in low-torque, clean environments—but SS is stronger for high pressure.

Yes—all our SS balls in fire-safe valves comply with API 607 standards with metal or graphite seats.

Yes—but SS316 or electropolished SS316L is recommended for better hygiene and corrosion resistance.

Yes—we offer precision-lapped or electropolished SS balls for pharma and hygienic lines.

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