wastewater pump / suction lift / diaphragm / metering
Sigma S1Cb Series



  • Application:

    for wastewater

  • Priming:

    suction lift

  • Other characteristics:

    diaphragm, metering, electric

  • Power:

    110 W (0.15 hp)

  • Flow:

    Max.: 117 l/h (30.9081 us gal/h)

    Min.: 21 l/h (5.5476 us gal/h)

  • Pressure:

    Max.: 12 bar (174.05 psi)

    Min.: 4 bar (58.02 psi)


The Sigma X diaphragm metering pump covers a capacity of 21 to 1,040 l/h in versions S1Cb, S2Cb and S3Cb. Its patented multi-layer safety diaphragm guarantees maximum process safety. Efficient protection of the power end from overloading by means of an integral frequency converter with microprocessor control(ler).

One highlight is the standardised operating concept with click wheel and 4 additional operating keys on a removable control unit. A large illuminated LCD and a 3-LED display for operating, warning and error messages, visible from all sides, offers additional operating convenience.

The Sigma, like all smart ProMinent metering pumps, can be flexibly connected to various bus systems. Selectable options for wireless enable remote operation, configuration and backup.

Large adjustment range by combining frequency and stroke length adjustment. The pump works with high precision across the entire frequency range. Accurate and complication-free metering of viscous and gaseous media by adjustment of the movement profile.