Ceramic Ball Valves- Properties and Applications of Structural Ceramic Ball Valves by Shengli Abrasives

Typical Applications of Advance Ceramic Components

Shengli Abrasives can produce all kinds of zirconia, alumina and zirconia/ alumina structural parts according to customer drawings. These include:

  • Linings
  • Mixing rods
  • Arbors and axile brush
  • Textile knives
  • Guyed tower
  • Wear resistant rings
  • Plungers
  • Ball valves
  • High precision pellets,
  • Fruit knives and so on.

Ceramic plunger for plunger pump, ceramic packing gland, ceramic cylinder sleeve, ceramic unique direction valve

Figure 1. Ceramic plunger for plunger pump, ceramic packing gland, ceramic cylinder sleeve, ceramic unique direction valve

Material Properties

Typical material properties of Shengli Abrasives zirconia ceramic outline in the following:

Table 1. Typical mechanical and physical properties of Shengli Abrasives zirconia ceramic

Composition

wt%

94.8% ZrO2 5.2% Y2O2

Specific Density

g/cm3

> 6.0

Hardness (HV)

GPa

>11

Bending Strength

MPa

1150

Fracture toughness

MPa.m0.5

9

Grain size

um

<0.5

Elastic modulis

GPa

200

Thermal conductivity

w/(m.k)

3

Thermal expansion Coefficient (20-400°C)

X10-6/K

10

Ceramic guyed tower, guide pulley, screw

Figure 2. Ceramic guyed tower, guide pulley, screw

Structural Ceramic Ball Valves

Advantages of structural ceramic ball valves include low-cost, hi-economy, long life (2~4 times of Titanium Valves), increase resistance to corrosion, high temperature, wear and erosion etc.. They are commonly used in transportation systems of various acid, alkaline or saline gases, solutions, high working temperature steams and slurries, in the lines of oil industry, metallurgy, papermaking, power station, refinery, etc. Structural ceramic ball valves are an ideal substitute for titanium and monel valves in corrosive environments. There are four types of driving performances, manual, pneumatic, pneumatic-spring return and electric. Various special valves can be designed on demand. Furthermore, various high wear-resistant, corrosion-resistant and high temperature-resistant ceramic components, hydraulic pressure sealing components can be provided as well.

Structural ceramic ball valves

Figure 3. Structural ceramic ball valves

Properties of Structural Ceramic Ball Valves

Typical properties of structural ceramic ball valves include:

  • Wear and corrosion resistance
    The valve ball, valve seat and inner lining are all made of Hi-performance structural ceramics with hardness of HRA87 or above. So structural ceramic ball valves can withstand the impact of Hi-speed liquids and hard grains, displaying excellent performance on wear and corrosion resistance.
  • Corrosion resistance
    The valve ball, valve seat and the inner lining are all made of Hi-performance structural ceramics. They have been examined by the Metal Research Institute of Chinese Academy of Sciences, showing that the structural ceramics have excellent corrosion-resistance, except to glass-liquor and hydrofluoric acid.
  • Long working life
    They have passed the tests successfully by Hefei Universal Machinery Institute of Machinery Engineering Ministry. The static pressure test showed no leakage after 10000 times opening-closing.
  • Wide-range of applications
    Structural ceramic ball valves are applicable to various acid, alkaline or saline solutions, gaseous media, etc. Hard sealing ball valves can also be used in media with particles and fibers.

Source: Shengli Abrasives

For more information on this source please visit Shengli Abrasives

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