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The Brochure

The STP125 Stainless Steel Pump brochure introduces a compact, sanitary pump engineered specifically for tank truck liquid transfer applications. 

The STP125 Pump is a 3-A certified sanitary pump designed to safely and efficiently move food-grade products and chemical liquids from transport tank trailers.

With a lightweight stainless-steel construction, quick-service seal system, and pulse-free flow characteristics, the STP125 is built to support operators who require sanitary compliance, reliability, and easy maintenance in demanding transport environments. 

STP 125 brochure cover

Why It Matters

In food-grade and chemical transport applications, operators face three constant challenges:

  • Maintaining sanitary compliance
  • Ensuring reliable product transfer
  • Minimizing downtime during maintenance

The STP125 addresses these needs through a combination of sanitary design, flexible seal configurations, and a maintenance-friendly construction.

For fleets hauling sensitive products like dairy, syrups, vegetable oils, or chemicals, maintaining product purity and operational reliability is critical to protecting both customer trust and regulatory compliance. 

What You’ll Find Inside

Sanitary Stainless-Steel Construction

The STP125 is designed to meet strict sanitary requirements while maintaining durability for transport service.

Key performance specifications include:

  • Flow rate: Up to 232 GPM
  • Maximum speed: 750 RPM
  • Maximum pressure: 140 PSI
  • Weight: 145 lbs (including relief valve)
  • Maximum temperature: Up to 300°F

The stainless-steel construction provides corrosion resistance while maintaining the strength required for repeated transport duty cycles.

 

Flexible Drive Options

The STP125 supports two drive configurations to match tank truck installations:

  • Hydraulic direct mount
  • Top shaft drive

This flexibility allows operators and installers to configure the pump to fit various truck layouts and PTO-driven systems.

 

Seal Options for Application Compatibility

The pump’s flexible seal design allows operators to match seal materials to the product being transported.

Available seal configurations include:

  • Standard Nitrile O-ring seal assembly
  • Optional EPDM or Viton® O-ring materials
  • Double lip seal configurations
  • Mechanical seals

These options allow fleets to tailor the pump configuration to the viscosity, temperature, and chemical compatibility requirements of the application.

 

Maintenance-Friendly Design

The STP125 is designed to minimize downtime and simplify maintenance procedures.

Service advantages include:

  • Front-loading seal design allowing seal replacement without removing piping or pump head
  • Quick Strip design for fast cleaning and maintenance
  • Low shaft deflection for smoother, quieter operation
  • Multiple drive configurations for easier installation flexibility

These features allow operators to perform routine service quickly, keeping tank trucks in operation.

 

Efficient and Low Operating Costs

The pump design focuses on efficient fluid movement while protecting system components.

Key efficiency features include:

  • Bi-directional pressure relief valve protecting the system during loading and unloading
  • CFD-optimized rotor profile for smooth product flow
  • Quiet, pulse-free and cavitation-resistant operation

This design helps reduce wear, protect product quality, and improve long-term reliability.

Application Coverage

The STP125 is designed for sanitary and liquid bulk transfer applications including:

  • Sugars
  • Fruit juices
  • Chocolate
  • Vegetable oils
  • Dairy products
  • Starches

Industries Served

  • Transportation & Logistics
  • Food & Beverage
  • Dairy Processing
  • Chemical & Petrochemical
  • Industrial Manufacturing

Who Should Download This Brochure

  • Fleet managers operating food-grade tank trucks
  • Maintenance managers responsible for sanitary pump systems
  • Equipment specifiers selecting pumps for liquid bulk transport
  • Operators seeking reliable, easy-service tank truck pumps

FAQs

The STP125 Pump provides a maximum flow rate of 232 gallons per minute, depending on operating speed and application conditions.