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S Variable Series

Variable Speed Peristaltic Metering Pumps


  • Leak detection
  • Backup pump capability
  • Remote start or stop
  • LED Indicators
  • Three dedicated output relays
  • 2 year warranty

20:1 Turndown

The S Variable Series are peristaltic pumps with practical functions such as backup pump capability, leak detection, and remote operation for industrial, water, wastewater, and commercial swimming pool applications. The pumps have 20:1 turndown and run at the speed set with the adjustable potentiometer when power is applied or the standby input is removed.  The Series has LED pump status indicators and three output relays for indication from the pump to a separate device, like a process control device.

The pumps have a durable totally enclosed housing with NEMA 4X rating. The brushless DC motor is equipped with ball bearing support and the switch power mode offers energy efficiency. The splined shaft in the pump head and roller assembly allow smooth installation and replacement.

The identifying item number prefix begins with S3V and S4V.

Key Features

Leak Detect Jumper

The pump includes a factory-installed Leak Detect Jumper to stop the pump if a leak is detected.  The jumper may be removed to allow the pump to continue to run when a leak is detected.

Three Dedicated Output Relays
  • Leak Detect: Sends relay to indicate a leak is detected.
  • Run: Sends relay to indicate pump is operating.
  • Transfer: Sends relay from the primary pump to transfer operation to a back-up pump, if a leak is detected, or if there is a loss of power or if a drive fault occurs.
Standby Input

The Standby Input can receive a dry contact signal to remotely stop or start the pump. The standby input is also utilized with the transfer relay to set the primary pump to transfer operation to a back-up pump.

Stenner Peristaltic Pump Advantages
  • Self-priming against max. working pressure; foot valve not required
  • Solutions do not contact moving parts
  • Pump head requires no valves, allows for easy maintenance
  • Does not lose prime or vapor lock
  • Pumps off-gassing solutions and can run dry.
  • Output volume is not affected by back pressure.
  • Simple tube replacement


Flow Rate Outputs

S3V and S4V Models
Pump Tube Turndown
per Day
per Hour
per Hour
per Minute
per Day
per Hour
per Hour
per Minute
25 psi (1.7 bar) max. Approximate Output @ 50/60Hz
S3V03 3 20:1 2.0-40.0 0.8-1.67 10.7-213.0 0.18-3.56 7.6-151.0 0.32-6.31 315.5-6309.0 5.3-05.0
S3V04 4 20:1 3.0-60.0 0.13-2.50 16.0-320.0 0.27-5.33 11.4-227.0 0.47-9.46 473.2-9464.0 7.9-158.0
S3V05 5 20:1 4.3-85.0 0.18-3.54 22.7-453.0 0.38-7.56 16.1-322.0 0.67-13.41 670.3-13407.0 11.2-223.0
5X 20:1 7.5-150.0 0.31-6.25 40.0-800.0 0.67-13.33 28.4-568.0 1.18-23.66 1182.9-23659.0 19.7-394.0
100 psi (6.9 bar) max. Approximate Output @ 50/60Hz
S3V01 1 20:1 0.3-5.0 0.01- .21 1.3-27.0 0.02-0.44 1.0-19.0 0.04-0.79 39.4-789.0 0.7-13.0
S3V02 2 20:1 0.8-17.0 0.03-0.71 4.5-91.0 0.07-1.51 3.2-64.0 0.13-2.68 134.1-2681.0 2.2-45.0
S3V07 7 20:1 2.0-40.0 0.08-1.67 10.7-213.0 0.18-3.56 7.6-151.0 0.32-6.31 315.5-6309.0 5.3-105.0
S4V7X 7X 20:1 3.0-60.0 0.13-2.50 16.0-320.0 0.27-5.33 11.4-227.0 0.47-9.46 473.2-9464.0 7.9-158.0
NOTICE: The information within the charts above is solely intended for use as a guide. The output data is an approximation based on pumping water under a controlled testing environment. Many variables can affect the output of the pump. Stenner Pump Company recommends that all metering pumps undergo field calibration by means of analytical testing to confirm their outputs

Technical Data


Flow Rate Output Control Potentiometer
Reproducibility +/- 2%
Maximum Working Pressure 25 psi (1.7 bar), 100 psi (6.9 bar)
Maximum Operating Temperature 104°F (40°C)
Maximum Suction Lift 25 ft (7.6 m) vertical lift, based on water
Motor Type Brushless DC motor
Shaft RPM (average maximum) 45
Duty Cycle Continuous
Maximum Viscosity 1500 centipoise
Motor Voltage (Amp Draw) 120V 60Hz 1PH (0.6), 230V 60Hz 1PH (0.3), 230V 50Hz I PH  (0.3)
Power Cord Type 120V 60Hz SJTOWA, 230V 60Hz SJTOWA,
230V 50Hz H05RN-F
Power Cord Plug End 120V 60Hz 5-15P, 230V 60Hz 6-15P,
230V 50Hz CEE7/7
Cord Length 6 ft (1.8 m)
Classification Indoor/Outdoor


Materials of Construction
All Housings Polycarbonate
Pump Tube (S3V) Santoprene®*(FDA approved), or Versilon®** 
Pump Tube (S4V) Santoprene®*(FDA approved)
Check Valve Duckbill (S3V) Santoprene®*  (FDA approved), or Pellethane®† 
Ball Check Valve Components (S4V) Ceramic ball (FDA approved); Tantalum spring; FKM seat & O-ring OR
Ceramic ball (FDA approved); Stainless steel spring; EPDM seat; Santoprene®* O-ring
Pump Head Rollers Polyethylene
Roller Bushings Oil impregnated bronze
Suction/Discharge Tubing
and Ferrules
Polyethylene (FDA approved)
Tube & Injection Fittings PVC or Polypropylene (both NSF listed)
Connecting Nuts PVC or Polypropylene (both NSF listed)
3/8″ Adapter (S3V) PVC or Polypropylene (both NSF listed)
Suction Line Strainer and Cap PVC or Polypropylene (both NSF listed); ceramic weight
All Fasteners Stainless steel
Pump Head Latches (S3V) Polypropylene
Pump Head Thumbscrews (S4V) Stainless steel and PVC
Pump Head Support and Transition Sleeve (S4V) Santoprene®*
Leak Detect Components (S3V) Hastelloy®††
Leak Detect Components (S4V) Hastelloy®†† and stainless steel

*    Santoprene® is a trademark of Celanese International Corporation.
**  Versilon® is a registered trademark of Saint-Gobain Performance Plastics.
†   Pellethane® is a registered trademark of Lubrizol Advanced Materials, Inc.
†† Hastelloy® is a registered trademark of Haynes International, Inc.



Agency Listings

Listings vary by model.


Pump Dimensions

S3V Model

S4V Model

Box Dimensions

14 x 9 x 10 in. (35 x 23 x 24 cm)

Shipping Weight

9 lbs (3.7 kg)

Dimensions & weight

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