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KOWOV

ELCV Ceramic Ball Valve

ELCV Ceramic Ball Valve, photo 1

KOWOV manufactures the ELCV economical ceramic ball valve for steel, power plant and lithium battery duties that need corrosion and wear resistance without the heavy-duty construction of the FCCV1. Floating-ball and fixed-ball configurations are available, including zinc-free and copper-free arrangements for material-sensitive processes

Size range
DN15-250
Pressure rating
PN10-50 / Class 150-300
Temperature range
-40 to 180 °C
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Design and performance

  • Economic Design: Simplified structure for lower cost without sacrificing reliability

    Material Flexibility: Cost-effective ceramics tailored to working conditions

    Corrosion Resistance: Zinc-free, copper-free, suited to lithium battery and chemical sectors

    Wear Resistance: abrasion protection, even in abrasive media

    High Performance: Long service life and dependable sealing in moderately challenging environments

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Applications

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  • Steel industry: coal powder injection, hot metal desulfurization, silica, and MgO handling

    Gas and pneumatic conveying: sand, glass particles, cement, ore, and dust

    Power plants: flue gas dust, fly ash, and abrasive ash systems

    Lithium battery industry: zinc-free, copper-free processes requiring high purity

Technical data

Item Y-ZrO Y-TZP Mg-ZrO₂ M-PSZ 90 Al₂O₃ 95 Al₂O₃ 99 Al₂O₃ Si₃N₄ SiC Common ceramics Carbide alloy 45# Steel

Density g/cm³

 6.0~6.05 5.72~5.74 3.45~3.55 3.6~3.75 3.9~3.95 3.2~3.33 3.15~3.25 3.0~3.5 14~18 7.8

Hardness HRA/C

 87 85 90 90 92 92 94 50~60 70 36

Flexural Strength MPa

 1150 900 350 370 450 1200 470 20~50 2000 804

Fracture Toughness (KIC) MPa√m

 10~12 13~15 3.4 3.6 4.5 7 4 -- 20 101

Compressive Strength MPa

 2000 1800 1700 2000 2200 2800 -- -- 4000 2000

Thermal Shock Resistance °C

 87 110 -- -- 50 200 75 -- 500 500

Thermal Expansion Coefficient ×10⁻⁶/°C

 9.6 10 7.6 7.8 8.3 3.4 4 -- 7 12

Modulus of Elasticity GPa

 200 200 310 330 350 300 400 -- 600 --

Crushing Load KN (Φ6mm)

 15 10 3.5 3.6 4 18 3.5 -- -- --

Using Temperature °C

 <160 <1000 <1200 <1250 <1500 <1500 <1500 -- -- <560

Water Absorption

 0 0 0.02% 0.01% 0.00% 0 0.50% 5~10% -- --

Corrosion Prevention

 Good Good Good Good Good Good Good Flooey Good Flooey
*Data sources: test results or issued original documents
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ANTI-CORROSIVE PERFORMANCE REFERENCE TABLE
Media Temperature ZrO₂ 99.9% Al₂O₃ SiC Si₃N₄ Graphite PTFE Fluororubber SS304 SS316 HC
20% HCL 60°C A A A B A A A C C B
20% HCL 95°C A A A C A A A -- -- C
90% H₂SO₄ 60°C A A A A A A A C C B
90% H₂SO₄ 95°C A A A B A A A C C C
60% H₃PO₄ 60°C A A A C A A A C C A
60% H₃PO₄ 95°C A A A C A A A C C A
10% HF 60°C C B A A A A A C C B
46% HF 95°C C C A C A A A -- -- C
60% HNO₃ 60°C A A A C B A A A A C
60% HNO₃ 95°C A B A C B A A B B C
30% NaOH 60°C A B A B A A A A A A
30% NaOH 95°C B B A C A A A A B A
A ≤ 0.1mmg/cm²/day: Can be ignored or has no corrosion, recommended for use
B = 0.1~0.3mmg/cm²/day: Slight or very minor corrosion, use with caution
C ≥ 0.3mmg/cm²/day: Significant corrosion, not recommended for use
-- : Intense corrosion, to the extent that measurement is not possible
Flow Characteristic Sheet of Ceramic Ball Valve
Core Specifications O-type ball core V60° ball core V45° ball core V30° ball core
DN15 10 7 4 3
DN20 18.2 12 8 5
DN25 29 18 12 8
DN32 47 30 20 13
DN40 73 46 31 21
DN50 114 72 48 32
DN65 181 115 76 51
DN80 292 185 123 82
DN100 456 289 192 128
DN125 712 452 300 201
DN150 1025 650 432 289
DN200 1822 1156 769 514

Technical resources

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