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Double Head Fixed Output Metering Pump – Classic Series

Double Head Fixed Output Metering Pump - Classic Series From Stenner

The Double Head Fixed Output Metering Pump, is another variation to select from in the Classic Series, electro-mechanical pump line.

If requiring more output than the Classic single head pump offers, especially with 25 psi installations for larger commercial swimming pools, then the double head pump may be your answer. Similar to the other models in the Classic series, the pump will dose solutions such as sodium hypochlorite, acid, polyphosphates, biocides for common water treatment applications that include disinfection, pH control, corrosion and scale control, oxidation and sanitization. Also utilized in water and wastewater treatment plants, the pump can inject two compatible liquids at the same ratio. The Classic Series double head fixed pump is built the same way as the single head fixed with the addition of another pump head that doubles the output. The pump runs at 100% fixed rate and can be installed to an ORP type controller to manage the output.

Unique Stenner Features

  • Interchangeable pump heads and tubes to convert one model to another without having to purchase a new pump.
  • Easy and fast tube replacement without tools with the QuickPro® pump head.
  • The pump is built with three detachable components; the motor and two pump head that can be separated without tools.

How the Double Head Fixed Chemical Injection Pump Works

The fixed rate pump does not have an output adjustment. The output is determined by three factors; the rpm of the motor gears and the pump tubes in both heads. The motor’s output shaft rotates at a fixed rpm which drives the roller assembly within the pump head.


The 100 and 170 models are two sub-series within the Classic Series Double Head Pump (Adjustable and Fixed) and below is a summary of the primary differences in the Fixed.

100 Series�Adjustable 175 Series Adjustable
  • 26 rpm
  • 3, 10, or 22 gpd up to 100 psi
    (11.4, 37.9, 83.3 lpd at 6.9 bar)
  • 3, 10, 22, 35 or 50 gpd up to 25 psi
    (11.4, 37.9, 83.3, 132.5, 189.3 lpd at 1.7 bar)
  • 44 rpm
  • 5, 17 or 40 gpd up to 100 psi
    (18.9, 64.4,151.4 lpd up to 6.9 bar)
  • 5, 17, 40, 60 or 85 gpd up to 25psi
    (18.9, 64.4, 151.4, 227.1 & 321.8 lpd up to 1.7 bar)


Maximum Operating Temperature 125�F (52�C)
Maximum Suction Lift 25 ft (7.6 m) vertical lift, based on water
Motor Type 1/30 HP, shaded pole, class B
Duty Cycle Continuous
Motor Voltage (Amp Draw) 120V 60Hz 1PH (1.7)
220V 60Hz 1PH (0.9)
Power Cord Type SJTOW
Power Cord Plug End 120V 60Hz NEMA 5/15
220V 60Hz NEMA 6/15
230V 50Hz CEE 7/VII
250V 50Hz CEE 7/VII


Materials of Construction
All Housings Polycarbonate
Pump Tube & Check Valve Duckbill Santoprene®*, optional Versilon™** #1, #2 & #5 tubes,
FDA approved
CV Duckbill with Versilon™** Tube Pellathane®
Pump Head Rollers HDPE
Roller Bushings Oil impregnated sintered bronze
Suction/Discharge Tubing,
Ferrules 1/4″ & 6 mm
Polyethylene, FDA approved
Tube Fittings, Check Valve Fittings Gray fittings: Type 1 Rigid PVC, NSF listed
Black fittings: PP, NSF listed
Connecting Nuts PP or Type 1 Rigid PVC
3/8″ Adapter Type 1 Rigid PVC, NSF listed
Suction Line Strainer PP or Type 1 Rigid PVC body with Type 1 Rigid PVC cap,
NSF listed; ceramic weight
All Fasteners Stainless steel
Pump Head Latches Polypropylene


Listings vary by model.

* Santoprene® is a registered trademark of Exxon Mobil Corporation.
** Versilon™ is a registered trademark of Saint-Gobain Performance Plastics.
† Pellathane® is a registered trademark of The Dow Company.

Pump Dimensions

Shipping Weight: 9 lbs (4 kg)

Box Dimensions: 18 x 8 x 10 in. (45 x 20 x 25 cm)