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Home → Catalogue → Pressure control → Control Valves → TDS blowdown control valve ADCA VPC26i in steam boiler with electric actuator ADCATrol
Valsteam ADCA
TDS blowdown control valve ADCA VPC26i in steam boiler with electric actuator ADCATrol

Specifications

  • Use

    TDS blowdown control in steam boilers and other applications with high pressure drops and low flow rates where cavitation and flashing phenomenon are likely to occur

  • Body material

    Stainless Steel A351 CF8M & Stainless Steel Trim

  • Max. operating pressure

    Up to 33,7 bar (Body design PN40)

  • Flow rate coefficients

    Kvs 1,2 to 2,5 (m³/h)

  • Type & Trim design

    two-way, multi stage trim

  • Stem sealing

    PTFE/GR V-Rings – up to 250ºC (standard)

  • Valve sealing

    Stellited (class IV), stellite faced plug and seat

  • Actuator

    Electric Actuator ADCATrol AVF234S series

  • Supply voltage

    (230 V AC 50/60 Hz), 0-10V or 4-20mA Input (standard),,
    24 V AC, 115 V AC, 230 V AC, 400 V AC 50/60 Hz and 24 V DC

  • Connections

    Flanged EN 1092-1 PN 40

  • Versions construction

    Valve without sample valve bottom connection,
    Valve with sample valve bottom connection and plug

TDS blowdown control valve ADCA VPC26i in steam boiler with electric actuator ADCATrol

Product code: E.VPC261IXX1

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When a steam boiler is in operation there is continuous evaporation of boiler water which causes an undesirable increase in TDS (Total Dissolved Solids) concentration. A typical problem that results from this is water foaming, which leads to reduced boiler performance and wet steam. Furthermore, dissolved and suspended solids will carry over into the steam lines, contaminating valves, tubes, heat exchangers and steam traps, leading to corrosion, scaling and erosion. For these reasons, a certain amount of boiler water must be discharged continuously or periodically to ensure TDS concentration is kept within the recommended parameters. The ADCATrol VPC26 is a control valve specially designed for this purpose and features a multi-stage trim to progressively reduce the energy of the fluid. This makes it ideal for discharge of boiler blowdown at high differential pressures where flashing is a concern. The valve is suitable for both continuous and on/off TDS control via a AV series fail-safe spring return actuator.

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