Stenner Classic Series 45M1 Adjustable Chemical Injection Pump, 3 GPD, 1/4 in., 120V, 25 PSI, 45MJL1A1STAA

The Stenner 45MJL1A1STAA is the Classic Series 45M1 single head adjustable chemical injection pump, with 1/4 in. tubing, output up to 3 gallons per day and a 25 psi maximum discharge pressure, on 120V 60 Hz power.

How it works

Stenner builds the pump from three detachable parts: the motor, the feed rate control and the pump head. The pump head uses a 3 point roller design that squeezes a pump tube, and Stenner states that this roller action works as a check valve against back flow, siphoning, overdosing and loss of prime. The feed rate control sets output from 5 to 100 percent in 2.5 percent steps. The pump is self-priming, can run dry without damage, does not vapor lock, and its output volume is not affected by back pressure.

Ratings and materials

The 45M1 uses a 1/30 horsepower shaded pole motor, class B, turning at 26 rpm for continuous duty at 1.7 amps on 120V 60 Hz. The housings are polycarbonate, and the pump tube and check valve duckbill are Santoprene. Maximum suction lift is 25 ft vertical, and the maximum operating temperature is 125 F (52 C).

What is included

An accessory kit comes with the pump: connecting nuts and ferrules for the tubing, a weighted suction line strainer, a 20 ft roll of suction and discharge tubing, an additional pump tube, 2 additional latches, a mounting bracket and the manual. The tubing size on this pump is 1/4 in. and the tubing color is white.

Before you order

Confirm that the chemical you plan to feed is compatible with the pump tube material, and match the tubing size to your plumbing. Stenner pump tubes and pump heads interchange between models, so the same pump head family is used across the Classic Series.