The STS sump pumps are energy-efficient residential sump pumps available in two models the STS21, and the STS31. The 1/4hp and 1/3hp pumps are stainless steel and feature less amp draw for greater energy efficiency.

Specially designed for the following uses:

• Basement Draining
• Dewatering
• Water Transfer
• Filtered Effluent

Features and Benefits

• Corrosion resistant construction
• A mechanical seal protects the motor. It consists of ceramic/silicon carbide seal faces with BUNA elastomers.
• Glass-filled thermoplastic impeller and motor cover. Motor is permanently lubricated for extended service life.
• Upper and lower heavy duty ball bearing construction.
• Air-filled motor mounted in aluminum housing.
• Includes vertical float switch and mounting pipe. Adjustable for various liquid levels.
• Motor is permanently lubricated for extended service life and is powered for continuous operation. All ratings are within the working limits of the motor.
• Power cord, 10′ standard length, heavy duty 16/3 SJTW with 115 volt grounding plug
• Complete unit is heavy duty, portable and compact

Technical Brochures

• BSTS2131R1 STS21/STS31 Submersible Sump Pumps

Installation/Operation Manuals

• IM236 R01 Sump Pumps

SELECTION & SIZING TOOLS

Goulds Water Technology offers several useful engineering tools for easy sizing of every area of a building. Simple to navigate software gives you accurate information and up-to-date documentation downloadable straight into your submittal package.

The Goulds Selection Software tool for Multi-Stage, Pressure Booster Packages, Wastewater and Vertical Turbines require a registered account: 
New User Registration 
Existing User Password Help
Goulds Selection Software Log in

Click the links below for access to the CAD and Intellitronic X Selection Software tools

Intellitronic X Selection	End Suction, Split-case, Multi-Stage, Self-Priming, Jet and Submersible pumps
CAD Files - Commercial	Goulds Water Technology CAD file Selection System

Goulds Water Technology Professional Dealer Locator