Hard Seal Ball

The hard seal valve ball is the core opening and closing part of ball valves. It adopts metal-to-metal hard sealing structure without any soft sealing materials such as rubber or plastic. The tight sealing is realized by precision lapping between the ball and seat sealing surfaces
Key Features
High temperature resistance: Suitable for high temperature steam, thermal oil and high-temperature process medium, working temperature over 400℃.
High pressure resistance: No deformation under high pressure, keeping stable sealing performance.
Wear & particle resistance: Ideal for medium with dust, sediment, slurry and solid particles.
Long service life: Metal hard seal structure, no aging or easy failure.
Fire safe design: No plastic parts, maintaining sealing performance under fire conditions.

PDF download Online Inqury BALLKING VALVE BALL TESTING REPORTS Ballking Sphere English Catalog

Detail

Product Name: Hard Sealing Ball

Sphere material: 201, 304, 304L, 316, 316L

Product Specifications: NPS 2-12 (DN50-300)

Pressure rating: Class 150-600 (PN16-100)

Applicable temperature: -196～350℃

Applicable media: water, gas, oil, natural gas, and acid/alkali corrosive media.

Surface treatment: electroless nickel plating, hard chrome plating

Support type: valve seat

Drive method: arc groove

Applications

Widely used in petrochemical, coal chemical, power plant, metallurgy, high temperature steam pipeline, high pressure long-distance pipeline and corrosive medium with solid particles.

Difference from Soft Seal Ball

Soft seal ball: For normal temperature, low pressure and clean medium, easy leakage failure under high temperature and particle condition.

Hard seal ball: Perfect for high temperature, high pressure, abrasive and corrosive working conditions.