Skip to content
  1. Poolweb
  2. Pool Automation
  3. Chemical Pumps
  4. Poolweb #S3401AA101N
S420 S34 Variable Speed Metering Pump - 100 PSI 5 GPD 120 Volts - 1/4 Inch
  • Product image 1 of 1
  • Product Video
Poolweb #S3401AA101N

S420 S34 Variable Speed Metering Pump - 100 PSI 5 GPD 120 Volts - 1/4 Inch

Write a Review
Allow 5-7 Days to Ship
& ships free!
Unit price per 

Shipping Options

  • Standard Shipping, Free Get it by
  • 2 Day Shipping, Get it by
  • 1 Day Shipping, Get it by

Shopper Protection

Frequently bought together

  • +
  • +
  • Total price: $1,076.10

Product Information


This Stenner S420 Model S34 is a Variable Speed Peristaltic Metering Pump with 100 PSI, 5 GPD, 120 Volts and 1/4 inch Santoprene tubing. The pump features totally enclosed NEMA 4X housing, brushless DC motor, three dedicated output relays, remote start or stop,and LED pump status indicators. The S420 Series Variable Speed Metering Pumps inject solution in direct proportion to an incoming 4-20ma analog signal. The operator would scale the pump's response to the signal from 25-100% of the maximum flow rate depending upon the operator's desired flow rate. The ability to accept a 4-20mA signal makes the pump well suited for use with water treatment controls including pH and ORP monitors to maintain proper water chemistry and to treat effluent discharge water.

The S420 Series is equipped with smart technology. It has leak detecting components to determine when solution is present in the pump head. When a leak is detected, a tube icon will always appear on the display. It also has a tube timer where the operator can enter the desired number of hours the pump should run before the display alarm blinks Tube Change. Another feature is the backup pump capability of the S420. The backup pump will activate in the event of loss of power or a drive fault error. Maximum operating temperature for this series is 104 degrees F. Maximum suction lift is 25 feet.

Model S34 pumps include: 3 connecting nuts, 3 ferrules, 1 injection fitting (24 PSI) or 1 Duckbill Check Valve (100 PSI), 1 weighted suction line strainer, 1 20-foot roll of white suction/discharge tubing, 1 additional pump tube, 2 additional latches, 1 mounting bracket and 1 manual.

Product Features

  • Direct replacement for the SVP Series
  • Activated by 4-20mA signal or manually
  • Brushless DC motor
  • Three dedicated output relays
  • LED pump status indicators
  • Remote start or stop
  • Leak detection
  • 6 foot power cord
  • Two-Year Warranty

Why should you purchase a Stenner Chemical Pump for your pool?

There are numerous benefits to buying a Stenner Pump Company chemical pump for their pool, which have contributed to the company's solid reputation and success over the years. Stenner prides itself on producing dependable pumps that require minimal service and expense. Their less than 1% return rate speaks to the quality and reliability of their products.

Stenner pumps are designed and constructed using high-quality materials, ensuring a long-lasting and durable product. The company's commitment to quality means that customers can trust their pump to perform consistently and effectively over time. Stenner provides exceptional technical support, ensuring that customers have access to valuable assistance and resources when needed. This backing not only assists with initial installation and setup but also guarantees ongoing support throughout the life of the pump.

The benefits of purchasing a Stenner chemical pump are numerous, with the company's long-standing commitment to quality, innovation, and customer satisfaction at the heart of its success. By choosing a Stenner pump, customers can expect a reliable, durable, and customizable solution that meets their specific needs while also supporting a more sustainable and environmentally-friendly future.

Technical Specifications

Product CategoryChemical Pumps
Poolweb Item #S3401AA101N
Shipping Weight9.0 lb

Shipping & Returns

Shipping Options

Ship MethodCostArrival
Standard ShippingFreeGet it by
2 Day ShippingGet it by
1 Day ShippingGet it by

Standard ground shipments may be delivered sooner depending on where you are located, and the shipping method used to ship your order. Combining multiple items onto the same order can change the delivery date and expedited shipping costs, especially if the other items are not available for immediate shipment. Transit time is calculated in business days and does not include Saturday and Sunday.

Return Policy

This item can be returned within 30 days of order. See return policy for details and how to place a return.

Poolweb Guarantee

This item qualifies for a one-year guarantee. Poolweb guarantees that the item you receive will function as advertised for one year. See the Poolweb Guarantee for more details.

We Also Recommend...

Product Reviews

Customer Questions