uPVC Screens & Casings
Overview
uPVC (Unplasticized PVC) Screen and Casing are widely used in water wells, boreholes, and groundwater extraction systems. These products are engineered to maintain structural integrity under subterranean conditions while providing corrosion resistance and a long service life. uPVC's inherent properties—lightweight yet rigid—make it an ideal choice for water well installations.
Varieties
Plain Casing
Smooth external surface, typically used as a protective lining in drilled wells.
Ribbed Casing
Features external ribs to minimize contact with borehole walls, reducing friction during installation and preventing damage.
Slotted/Screen Casing
Contains precisely cut slots or perforations that allow water inflow while filtering out sand and sediment.
Key Uses & Applications
Domestic & Municipal Water Wells
Lining and protecting boreholes to ensure clean water extraction for homes, communities, and public water supply.
Irrigation & Agricultural Wells
Provides an efficient water source for farms, ranches, and greenhouse irrigation systems.
Industrial & Commercial Wells
Used in manufacturing facilities, water treatment plants, or industrial cooling processes.
Groundwater Monitoring
Environmental testing wells where corrosion-resistant casings help maintain water quality and stable borehole integrity.
Product Highlights
Corrosion Resistance
uPVC does not rust or degrade chemically in typical groundwater environments, ensuring a longer service life compared to metal alternatives.
High Strength-to-Weight Ratio
Lightweight for easier handling and transportation, yet robust enough to withstand underground pressures.
Low Maintenance
Smooth interior and exterior surfaces resist scale buildup and minimize sediment adherence.
Easy Installation
Compatible with standard threads or solvent-weld joints (depending on design), requiring minimal special tools.
Wide Range of Sizes
Available in diameters from approximately 2" (50 mm) up to 12" (300 mm) or more, depending on the manufacturer.
Technical Specifications
| Parameter | Details |
|---|---|
| Material | uPVC (Unplasticized Polyvinyl Chloride) |
| Diameter Range | Typically from 2" (50 mm) up to 12" (300 mm), sometimes larger |
| Lengths | Usually 3 m or 6 m standard lengths (custom lengths possible) |
| Wall Thickness (Schedule) | Commonly SCH 40, SCH 80, or other region-specific standards |
| Thread Type | Plain ends for solvent welding or threaded ends (male/female) |
| Ribbed vs. Plain | - Plain: Smooth outer surface - Ribbed: External ribs to reduce friction and protect slots |
| Slot Opening (Screen) | Varies (e.g., 0.3 mm, 0.5 mm, 0.75 mm, 1.0 mm), depending on well design |
| Operating Temperature | Up to ~60°C (140°F) for typical groundwater applications |
| Pressure Rating | Dependent on diameter and schedule; often up to 200–250 PSI for SCH 80 |
| Standards & Approvals | ISO, ASTM D1785, DIN, or local standards where applicable |
Pipe Dimensions
| Nominal Size (mm) | OD (mm) | Wall Thickness (mm) | OD Socket (mm) | ID of Pipe (mm) |
|---|---|---|---|---|
| 6 | 150 | 9.5 | 180 | 146 |
| 8 | 200 | 13 | 247 | 199 |
| 10 | 250 | 16 | 304 | 248 |
| 12 | 300 | 19 | 359 | 292 |
| 14 | 350 | 21.5 | 435 | 358 |
| 16 | 400 | 23.5 | 490 | 403 |
Screen (Slotted) Details
Slot Patterns
Typically longitudinal or horizontal slots spaced around the circumference. Slot distribution and density can be customized to match the desired flow rate and filtration level.
Filtration & Flow Capacity
The slot width (e.g., 0.3–1.0 mm) is selected based on aquifer conditions, ensuring efficient water inflow while preventing sand or sediment intrusion.
Open Area Percentage
Adjusted according to well design, balancing maximum flow with structural integrity.