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Hydraulic Double-diaphragm (MWA model)
Chemical ProtectionFood

This highly economical and substantial small-capacity series is ideal for extensive applications requiring high-precision and durability.

This compact metering pump comes with five types of pump heads as a quick response to differing site operating conditions and pump applications. Available are models that reliably answer an extensive range of needs including injection of trace amounts, high-pressure injection, and metered injection of high-viscosity liquids or liquids containing slurry. Moreover, multiple-series pump models and pulseless models further extend the scope of application of this series.

<Features>
  • Rigid oil-bath type drive
  • Available in both vertical and horizontal models for selection according to conditions of use and installation
  • Duplex, triplex, and up to six in-series pumps can be manufactured. (also connectable to R series)
  • Liquid-end materials have been specially selected to meet all kinds of liquid injection needs.

(1) Joint
(2) 2-stage valve seat
(3) Check ball
(4) Pump head
(5) Front diaphragm
(6) Operating oil (silicon oil)
(7) Oil pressure regulator
(8) Piston
(9) Drive diaphragm
(10)Buffer solution (glycerin, etc.)

Ο Performance Specifications

Model Max. discharge volume
(ml/min)
Max. discharge pressure
(MPa)
Strokes per minute (spm) Motor specifications (standard)
50Hz/60Hz
50Hz 60Hz 50Hz 60Hz
SXMA1
SXMWA1
-014 97 115 2.5 105 126 Totally enclosed fan-cooled outdoor type
3-phase 200 V
0.2kW 2P
-020 195 235
-030 500 600 2.0
SYMA1
SYMWA1
-014 97 115 2.5 0.2kW 4P
-020 195 235
-030 500 600 2.0

Ο Standard Liquid-end Materials

Hydraulic Double-diaphragm type
Part name
Liquid-end type
Pump head Front diaphragm Check ball Joint O-ring
STS SUS304 PTFE SUS304 SUS304 PTFE
VTC PVC PTFE Ceramic PVC Fluoro rubber
FTC PVdF PTFE Ceramic PVdF PTFE

  • Do not use outside the temperature range below as this may result in failure:
      Ambient temperature: 0 to 40 ºC
      Requirement for liquid being handled:
        Liquid temperature: PVC type: 0 to 40ºC
    SUS, PVDF type: 0 to 80ºC
    (no freezing allowed)
        Viscosity: 50 MPa•s or less
      Max. discharge pressure:
        See Performance Specifications.
        However, the maximum discharge pressure is 1.0 MPa in the case of PVC/PVdF (VTC/FTC models) pump heads.
  • This hydraulic diaphragm pump is not intended for pumping slurry.
    Use a hydraulic double-diaphragm type if the liquid to be pumped contains slurry.
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