Pumps

S128

S128 Series

Activated by a dry contact pulse water meter, the S128 automatically injects solution into the water line proportional to the system water flow at a ratio of 1 ounce of solution to 128 ounces of process water. As the pump registers dry contacts, it delivers the precise ratio.

The pump has three speeds to automatically adjust the injection rate when the water system flow rate increases or decreases. This flow response design allows the pump to evenly and proportionally inject solutions especially at low flow rates.

  • Potentiometer: Prime, 1 PPG, 1 PPL, 10 PPG, Reset Tube Timer, Standby
  • Output Relays: Signal Repeater Leak Detect, Drive Fault, Low Level
  • LED Indicators: Leak/Fault, Overrun, Change/Level, Power/Standby
  • Clear cover on control panel for moisture protection
  • Enclosed housing with NEMA 4X rating

The built-in signal repeater relay repeats the pulse signal from the water meter to another pump or house controller. If using a meter to register water consumption to the house controller, an additional meter is not required to activate the pump.

Set the Tube Change Timer DIP switches with the number of hours you want the pump to run before the CHANGE LED is activated. When the set time is reached the change/level LED is lit solid red. The standby setting allows the tube replacement without disconnecting the pump.

Set the pump’s DIP switch  to stop or to continue to run when a leak is detected. Set the optional output relay to notify another device if a leak occurs.

The pump has three dedicated inputs to receive a signal from another device.
PULSE Receives a pulse from a dry contact water meter to activate the pump.
STANDBY Remotely start or stop the pump when a dry contact input is sent to the pump. Replace tube without disconnecting pump
LEVEL  Input from a fluid level device indicates a low level in the solution tank. The Level Input may be used with the low level output relay.

Flow Rate Outputs

Technical Data

Parts

Exploded View

 60 psi (4.1 bar) max.

Pump
Prefix
Pump
Tube
Ounces
per Minute
Milliliters
per Minute
Approximate Output @ 50/60Hz
S4M8X8X10.0295.7

Specifications

Flow Rate Output Control

Fixed rate, interfaces with water meter

Reproducibility

+/- 2%

Maximum Working Pressure

60 psi (4.1 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)

Power Cord Type

120V 60Hz SJTOWA

Power Cord Plug End

120V 60Hz 5-15P

Cord Length

6 ft (1.8 m)

Classification

Indoor / Outdoor

Materials of Construction

All Housings

Polycarbonate

Pump Tube

Santoprene®* (FDA approved)

Ball Check Valve Components

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 & Guide Rollers

Polyethylene

Roller Bushings

Oil impregnated bronze

Suction/Discharge Line

Polyethylene (FDA approved)

Tube & Injection Fittings

PVC or Polypropylene (both NSF listed)

Connecting Nuts

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 Thumb Screws

Stainless steel; PVC

Pump Head Support and Transition Sleeve

Santoprene®*

Tube Pull

PVC

Leak Detect Components

Hastelloy®††; Stainless steel

Refer to the chemical resistance guide to determine the compatibility of the wetted components with the solution you want to pump or Contact Us.

* Santoprene® is a registered trademark of Celanese International Corporation.
†† Hastelloy® is a registered trademark of Haynes International, Inc


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

10 lbs (4.5 kg)

S4 Pump Head (S Series, S420, S Variable & S128)
S4 Tube Housing S4 Roller Assembly Pump Tube S4 Tube Housing Cover Thumb Screws

S4 Tube Housing

EA
S44B0-1
2-PK
S44B0-2

S4 Roller Assembly

EA
S45B0-1
4-PK
S45B0-4

Pump Tube

Refer to Pump Tubes page

S4 Tube Housing Cover

EA
S46B0-1
4-PK
S46B0-4

Thumb Screws

4-PK
S5001-4

Key Features

  • Evenly injects especially at low flows

  • Activate multiple pumps with one meter

  • Leak detection and optional relay

  • LED indicators

  • Totally enclosed housing

  • Simple tube replacement

  • 2 year warranty

Item Numbers

Create here

Literature

Download

Connect with
Stenner Experts

Get your pump answers.
Find out where to buy.