- Sanitary, Contamination‑Free Design
The non‑contacting rotor design protects product integrity and supports strict food and chemical handling requirements.
- Multiple Seal Options
Choose from O‑ring, double‑lip, or mechanical seals to match the pump to specific liquids, viscosities, and operating conditions.
- Quick‑Strip, Front‑Loaded Seals
Seals can be replaced without removing the pump casing, reducing downtime and simplifying routine maintenance.
- Quiet, Smooth Operation
The tri‑lobe rotor profile minimizes pulsation and noise while maintaining consistent flow even with viscous products.
- High Pressure Capability
A triple roller bearing design supports discharge pressures up to 140 PSI, extending seal life and supporting demanding transfer applications.
- Compact & Flexible Installation
Side, bottom, and top mounting options allow the STP 125 to integrate easily into a wide range of tank trailer configurations.
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The STP 125 is Gardner Denver’s industry‑preferred 3‑A certified sanitary stainless steel positive displacement pump for tank trailer applications requiring hygienic, reliable, and efficient liquid transfer. Purpose‑built for food‑grade and chemical transport, the STP 125 combines sanitary construction with high performance, simplified maintenance, and flexible installation options.
With non‑contacting rotors, multiple seal configurations, and a quick‑strip design, the STP 125 delivers clean, dependable pumping for demanding sanitary and chemical transport operations.
- 3‑A Sanitary certified for food‑grade applications
- Flow rates up to 232 GPM
- Discharge pressures up to 140 PSI
- Weight: 145 lbs with relief valve
- Temperature capability: up to 300°F
- Non‑contacting tri‑lobe rotor design for contamination‑free operation
- Front‑loaded seals for fast maintenance
- Clean‑In‑Place (CIP) compatible
The STP 125 is engineered for sanitary and chemical liquid transport, including:
- Food-grade liquids such as corn syrup, dairy products, oils, starches, and juices
- Chemical liquids
- Resins and specialty fluids
- Other sanitary-sensitive liquid bulk products
Its hygienic construction makes it ideal for operations requiring strict contamination control.
The STP 125 supports multiple drive configurations:
- Direct drive
- Hydraulic drive
- Electric motor
- Diesel engine
Multiple port and seal configurations are available to accommodate a wide range of liquids, viscosities, and operating requirements.
Downtime impacts productivity. Gardner Denver supports the STP 125 through a nationwide network of factory‑trained distributors and certified technicians available 24/7.
- Globally stocked genuine spare parts
- Service and maintenance kits
- Detailed commissioning
- Complete system inspection and overhaul services
- Professional maintenance and service contracts
- Customer and dealer service training
- Expert technical guidance
From installation through lifecycle service, Gardner Denver ensures sanitary liquid bulk operations run reliably and efficiently.
What makes the STP 125 a sanitary pump?
The STP 125 is 3‑A Sanitary certified and uses non‑contacting tri‑lobe rotors to prevent contamination. Its stainless‑steel construction and Clean‑In‑Place (CIP) compatible design support hygienic handling of food‑grade and chemical liquids.
What types of liquids can the STP 125 transfer?
The STP 125 is suitable for:
- Food‑grade liquids such as corn syrup, dairy products, oils, starches, and juices
- Chemical liquids
- Resins and specialty fluids
- Other sanitary‑sensitive bulk liquids
How much flow and pressure can the STP 125 handle?
The pump supports flow rates up to 232 GPM and discharge pressures up to 140 PSI, making it suitable for a wide range of viscosities and transport requirements.
What seal options are available for the STP 125?
The pump can be configured with O‑ring, double‑lip, or mechanical seals, allowing operators to match the seal type to specific liquids and operating conditions.
How does the quick‑strip design reduce downtime?
The STP 125 features front‑loaded seals that can be replaced without removing the pump casing. This simplifies maintenance and minimizes time out of service.
Is the STP 125 compatible with different drive systems?
Yes. The pump supports:
- Direct drive
- Hydraulic drive
- Electric motor
- Diesel engine
This flexibility helps integrate the pump into various tank trailer setups.
What temperatures can the STP 125 handle?
The pump is suitable for liquids up to 300°F, supporting hot or viscous product transfer.
Does Gardner Denver offer service and parts for the STP 125?
Yes. Support includes:
- Genuine factory‑engineered replacement parts
- Service and maintenance kits
- Commissioning and inspection services
- 24/7 access to certified technicians
- Maintenance contracts and training
Is the STP 125 suitable for contamination‑sensitive applications?
Yes. Its non‑contacting rotors, sanitary certification, and stainless‑steel construction make it ideal for operations requiring strict contamination control.