Pumps - panel mount pumps

400/A series panel mount pumps


400/A compact micro-flow pumps

For precise control of low flow rates, the 400/A is the smallest pump in our range. There is one version for continuous tubing, and another for tube elements. It is available with a range of simple DC motors as well as a stepper motor for greater speed control. It is available in black and white, or custom colours. Also available as pumpheads only.

Features and benefits

  • Flow rates from 30 µl/min to 30 ml/min
  • Instrument quality in very compact size 31 x 48 mm
  • Spring-loaded track for precision and extended tube life
  • For 0.85 mm and 0.9 mm tube wall thickness
  • Compatible with continuous tubing or tube elements
  • 12 V and 24 V DC drives with a range of maximum speeds
  • Pumphead available in standard or high pressure

Technical summary

Motor typesFixed speed DC motor, Stepper motor 
Pumphead options400/A 

Technical Summary table lists features available within the range. See ‘Specifications’ tab for model specific information.


400 FD/A performance

400FD/A pumps

Flow rates (ml/min)
Tube bore (mm) (ml/rev) Speed (rpm)
13 26 35 47 74 155 290
0.25 0.0025 0.03 0.07 0.09 0.12 0.19 0.39 0.73
0.51 0.0097 0.13 0.25 0.34 0.46 0.72 1.5 2.8
0.76 0.020 0.26 0.52 0.7 0.94 1.5 3.1 5.8
1.02 0.034 0.44 0.88 1.2 1.6 2.5 5.3 9.9
1.22* 0.046 0.6 1.2 1.6 2.2 3.4 7.1 13
1.52 0.068 0.88 1.8 2.4 3.2 5 11 20
2.06 0.104 1.4 2.7 3.6 4.9 7.7 16 30

Note: Reduced tube life with tube sizes from 1.65mm up to 2.06mm

Santoprene tubing wall 0.85mm, zero pressure and no suction height

All flow figures are nominal and may vary +/-10% depending on tube tolerances

* This dimension is only available in PVC


Technical specifications

400 FD/A400 ST/A
Motor typesFixed speed DC motor Stepper motor 
Pumphead options400/A 400/A 
Min. flow rate 0.03 ml/min
Max. flow rate30 ml/min30 ml/min
Min. operating speed0 rpm
Max. operating speed290 rpm290 rpm
Supply voltage12 V DC, 24 V DC 
Weight0.14 kg
Gearbox ratioSpur; 188:1, Spur; 21:1, Spur; 43:1, Spur; 90:1 
Compatible tubing bore size 0.25, 0.51, 0.76, 1.02, 1.22, 1.52, 2.06 mm
Compatible tubing wall thickness 0.85 mm0.85 mm

400 FD/A dimensions

Materials of construction

Pumphead body assemblyAcetal (black), Polyester resin (PET)
Pumphead rotor assemblyAcetal (black), Stainless steel
Pumphead roller assemblyAcetal (black)
DriveshaftStainless steel
SpringsStainless steel

Information listed covers the complete range. For detailed specifications of individual models/components refer to product reference manual or contact WMFTS representative.



  1. 400FDA datasheet (EN).pdf
    PDF - 221,8kb

Order Information

Product codes

400 FD/A product codes

Description/Motor type Nominal speed (rpm) Current nominal (mA) Track setting Pumps for continuous tubing Pumps for tube element
L 13 <30 standard 040.K91A.B1C 040.K91A.T1C
+Pressure 040.K91A.B15 040.K91A.T15
L 26 ~35 standard 040.KC1A.B1C 040.KC1A.T1C
+Pressure 040.KC1A.B15 040.KC1A.T15
L 47 ~55 standard 040.KK1A.B1C 040.KK1A.T1C
+Pressure 040.KK1A.B15 040.KK1A.T15
HL 74 ~120 standard 040.KN1A.B1C 040.KN1A.T1C
+Pressure 040.KN1A.B15 040.KN1A.T15
HV 155 ~180 standard 040.QR1A.B1C 040.QR1A.T1C
+Pressure 040.QR1A.B15 040.QR1A.T15
HV 290 ~250 standard 040.QT1A.B1C 040.QT1A.T1C
+Pressure 040.QT1A.B15 040.QT1A.T15
Description/Motor type Nominal speed (rpm) Current nominal (mA) Track setting Pumps for continuous tubing Pumps for tube element
HL 35 <50 standard 040.PG1A.B1C 040.PG1A.T1C
+Pressure 040.PG1A.B15 040.PG1A.T15
HL 74 ~60 standard 040.PN1A.B1C 040.PN1A.T1C
+Pressure 040.PN1A.B15 040.PN1A.T15
HV 155 ~90 standard 040.PR1A.B1C 040.PR1A.T1C
+Pressure 040.PR1A.B15 040.PR1A.T15
HV 290 ~125 standard 040.PT1A.B1C 040.PT1A.T1C
+Pressure 040.PT1A.B15 040.PT1A.T15

+Pressure track recommended with PVC-tubing and with >Ø1,0mm ID Santoprene and Silicone >Ø1,5mm ID tubing.

Some tubing-speed combinations may not be suitable for continuous tubing models

Motor ØD L Description
L 27

13rpm: 47mm

47rpm: 42mm

Small metal brush DC-motor with Varisto-Disc noise suppression
HL 30 35.74rpm: 71mm Carbon brush DC-motor with Varisto-Disc noise suppression. 3-pulse encoder available
HV 30

155rpm: 71mm

290rpm: 66mm

Carbon brush DC-motor with Varisto-Disc noise suppression. 3-pulse encoder available

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