Bladder Pump 1.66 PVC 18"(42mm)

Description

The Bladder Pump 1.66” PVC 18” (42 mm) is a low-flow pneumatic pump designed for groundwater sampling with minimal alteration of the sample. Its high-strength PVC construction and internal bladder system allow for controlled extraction, preventing direct contact of the fluid with the drive gas.

This type of pump is particularly suitable for high-quality environmental sampling, where it is necessary to preserve the chemical integrity of the water, such as in the analysis of volatile organic compounds (VOC), metals, or dissolved hydrocarbons. Its diameter of 1.66 inches (42 mm) makes it compatible with small diameter wells, being ideal for applications in piezometers and monitoring boreholes.

Features

• Outer Diameter: 1.66" (42 mm)
• Length: 18"
• Body Material: Corrosion-resistant PVC
• Operation Type: Pneumatic (air or inert gas driven)
• Application: High-quality groundwater sampling
• Compatibility: Small-diameter wells and piezometers

Applications

• Groundwater monitoring
• Environmental contamination studies
• Sampling for VOC and TPH analysis
• Remediation process tracking
• Hydrogeological control at industrial sites

Performance

The bladder pump operates using a positive displacement pneumatic system, designed to avoid contamination or alteration of the sample:

1. Installation in the Well

   • The pump is introduced to the desired depth within the well or piezometer.

   • It connects to an air/gas line and a discharge line.

2. Filling Phase

   • By reducing the pressure of the driving gas, the inner bladder expands.

   • Groundwater enters the pump chamber by pressure difference.

3. Discharge Phase

   • Pneumatic pressure is applied to the outer space of the bladder.

   • The bladder compresses, pushing the water to the surface through the discharge line.

4. Continuous and Controlled Cycle

   • The process repeats cyclically and controlled, allowing low-flow pumping.

   • This method minimizes volatilization and aeration of the sample.

Thanks to this system, the fluid never comes into contact with the compressed air, ensuring representative and chemically stable samples.

Advantages

• Ideal for low-flow sampling
• Minimizes loss of volatile compounds
• Compatible with small diameter wells
• Corrosion-resistant construction
• High precision and repeatability in environmental campaigns

Documents