Schroeder Valves
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Minimum flow valves of the SIP series

for applications with pressures between 140 and 250 bar

The minimum flow valves from our SIP series is the ideal valve for applications with pressures between 140 and 250 bar in systems with continuous operation, even at load points below the pump minimum quantity. The SIP controls the bypass by means of a multi-stage piston, which enables a defined multi-stage pressure reduction for all flow rates and also guarantees cavitation-free operation at all times. The piston of the SIP is actuated directly by the plug via a lever; the pressure is balanced to reduce the actuating forces. By means of pressure compensation, the actuating forces are reduced to such an extent that a pilot system (as with the SMA /SHP high-pressure series) is not required. With its properties, the SIP is particularly suitable for the protection of boiler feed pumps in combined cycle power plants (CCPP).

The SIP will be available by the end of the year 2019.

Features

Features

  • low-wear continuous operation
  • for pressures between 140 and 250 bar
  • automatic regulation of the pump's minimum required flow rate
  • Integrated non-return check valve function in the main and minimum flow line
  • reduced flow rate at the operating point due to automatic closing of the minimum flow line and thus
  • lower drive/motor power of the pump
  • more favourable energy balance, more favourable plant costs
  • operational safety, reliability, low maintenance
  • long life

Areas of application

Areas of application

  • for applications with pressures between 140 and 250 bar in systems with variable load conditions and continuous operation
  • particularly suitable for use on boiler feed water pumps in combined cycle power plants (CCPP).