Tohkemy Sigma Plunger Type Chemical Pump

Manufacturer: Tohkemy Corporation
Model: Sigma Plunger Type

Features

Motor-driven plunger-type metering pump suitable for injecting minute chemicals into high-pressure lines (maximum 32.0 MPa)
A lineup of two types, a control type that supports various control functions and a basic type that has a single function.

Use

Boiler chemical injection (separate cans, additives, etc.)
High-pressure microchemical injection into chemical processes

Specification

Wetted Parts & Precision Control
Durable Materials: SUS316L stainless steel heads and ceramic plungers ensure superior chemical resistance.
Integrated Flushing: Built-in path prevents seal damage from chemical crystallization.
High Accuracy: Manual stroke adjustment in 0.2% increments achieves $\pm1\%$ F.S. accuracy (10%–100% stroke range).
External Interlocking Operation (Control Type)
Pulse Mode: Standard (1:1), division (1:N), and multiplication (N:1) modes (N = 0.01–99.9) for proportional injection with pulse flow meters.
Analog Mode: Proportional stroke speed control via 0/4–20mA DC signals.
Batch Mode: Delivers precise pre-set dosages via manual buttons or external signals.
Remote On/Off: Remote start/stop via contact inputs.
Additional Features & Specifications
Optional Output Relay: Alarm and stroke-paging signal outputs.
Power Supply: 100–230VAC $\pm10\%$ (50/60Hz) for Control Type; motor-dependent for Basic Type.
Protection & Environment: IP55 enclosure (non-explosion-proof; protect from direct weather/sunlight).
Model specifications

  • SeriesModelMaterial
    model
    Maximum
    discharge
    pressure
    50Hz60HzInhalation
    Lift
    Connection
    diameter
    Maximum
    discharge rate
    [L/H]
    Maximum
    discharge rate
    [m/min]
    Number of
    strokes
    [spm]
    Maximum
    discharge
    rate
    [L/H]
    Maximum
    discharge
    rate
    [m/min]
    Number of
    strokes
    [spm]
    Rp female
    screw
    [MPa][m]
    SBKa32002SST32.01.9031.7712.3038.38451/4
    2300423.04.0066.71294.8080.01545
    1000610.06.40106.71957.60126.72335
    1400614.06.10101.7717.10118.3844
    1001110.011.00183.312913.10218.31534
    050165.016.70278.319520.00333.32334
    070127.012.40206.77114.80246.7854
    045224.522.50375.012926.70445.01534
    025342.534.10568.319540.80680.02334
    040224.022.40373.37126.50441.78443/8
    025412.541.50691.712949.20820.01534
    012641.264.001066.719576.001266.72334
  • SeriesModelMaterial
    model
    Maximum
    discharge
    pressure
    50Hz/60Hz CommonInhalation
    Lift
    Connection
    diameter
    Maximum
    discharge
    rate
    [L/H]
    Maximum
    discharge
    rate
    [m/min]
    Number of
    strokes
    [spm]
    Rp female
    screw
    [MPa][m]
    SCKa32002SST32.02.3038.38451/4
    2300423.04.8080.01545
    1000610.07.60126.72335
    1400614.07.10118.3844
    1001110.013.10218.31534
    050165.020.00333.32334
    070127.014.80246.7854
    045224.526.70445.01534
    025342.540.80680.02334
    040224.026.50441.78443/8
    025412.549.20820.01534
    012641.265.401090.02004

    Wetting part specifications

  • NamePump headConnectorStickerPlungerCheck ball
    SSTSUS316LSUS316LPTFE + 25% carbonCeramicSUS316L
  • Sigma Plunger Type

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