Pedrollo 6ST Series: 6" Stainless Steel Submersible Pumps
The Pedrollo 6ST series offers high-quality submersible pumps constructed from AISI 304 stainless steel. These pumps are recommended for applications requiring a durable product with excellent mechanical resistance and corrosion resistance, ensuring a long service life.
Key Features and Applications
These 6-inch submersible pumps are designed for wells and feature a volute and impeller geometry that results in very high efficiencies and significant energy savings. They are suitable for pumping clean water with an sand content not exceeding 100 g/m³. Their high efficiency and reliability make them ideal for various applications, including:
- Industrial water needs
- Municipal water distribution
- Agricultural water supply
- Water distribution in combination with pressure tanks
- Irrigation systems
- Pressure boosting
- Firefighting systems
Performance Overview
The 6ST series offers a wide range of performance capabilities:
- Flow rates up to 1600 l/min (96 m³/h)
- Head up to 531 m
Performance Curves
Detailed performance curves are provided for different models, illustrating flow rate (Q) versus head (H) and efficiency (η) for various configurations, including:
- 6ST 85G Series
- 6ST 140G Series
- 6ST 250G Series
- 6ST 285G Series
These curves help in selecting the appropriate pump for specific operating conditions.
Technical Specifications
Construction
- Impeller casing: AISI 304 stainless steel with ANSI/ASME B1.20.1 threading
- Check valve: AISI 304 stainless steel
- Support: AISI 304 stainless steel
- Impellers: AISI 304 stainless steel
- Diffusers: AISI 304 stainless steel
- Pump shaft: AISI 304 stainless steel
- Pump bearings: Special elastomer
- Wear rings: Special elastomer
- Drag joint: AISI 304 stainless steel
- Filter: AISI 304 stainless steel
- Cable protector: AISI 304 stainless steel
- Motor: 6" 6PD oil-filled, rewindable motor
Operating Limits
- Liquid temperature: up to +35 °C
- Maximum sand content: 100 g/m³
- Submersion depth below water level: up to 200 m (with 6PD motors), up to 150 m (with 6PSR motors)
- Operating position: Vertical
- Starts per hour: 20 with regular intervals
- Minimum cooling flow: 8 cm/s
- Continuous service: S1
Dimensions and Weights
The document provides a comprehensive table detailing the dimensions (DN, h1, h2, h3) and weights (kg) for various models within the 6ST series, including the 85G, 140G, 250G, and 285G configurations.
Available Configurations
Models are available with different numbers of stages (ETAPAS) and motor power ratings (kW, HP), specified with '-PD' for standard configurations. Special order options include pumps with double cable covers for coupling with dual-voltage motors (400/690 V/A, star/triangle) and variations in voltage or frequency.
Electrical Specifications
- Motor type: Three-phase, 380 V - 60 Hz
