Wedge Wire Screens
Precision Wedge Wire Screens: The Non-Clogging Standard for Heavy-Duty Filtration
Our Wedge Wire Screens are engineered using a specialized resistance welding process that joins V-shaped surface wires to internal support rods. This creates a continuous slot that widens inwardly, ensuring that particles only make two-point contact with the edges. If a particle passes the surface, it clears the screen entirely, virtually eliminating "blinding" or clogging. This makes it the premier choice for high-viscosity fluids and large-scale solid-liquid separation.
Technical Specifications & Geometry
1. The V-Wire Advantage
The geometry of the profile is what defines the performance. We offer various wire profiles (12S, 22S, 32S, etc.) to balance open area and structural strength.
Feature | Specification / Range |
Material Options | SS 304, 316L, 321, 2205 Duplex, 2507 Super Duplex, Hastelloy |
Slot Size (Gap) | 0.02 mm (20 μm) to 20 mm (High Precision) |
Slot Tolerance | ± 0.01mm (Standard) |
Surface Wire Shapes | V-Shape, Wedge-Shape |
Support Rod Shapes | Round, Triangular, Rectangular |
Screen Diameter | 20 mm up to 1500 mm (for Cylinders) |
2. Flow Directions
We customize the flow orientation based on your equipment design:
l FOTI (Flow Out-To-In): Standard for well screens and intake filters.
l FITO (Flow In-To-Out): Ideal for screw press separators and trommel screens.
l Radial Flow: Used in chemical reactors and catalyst baskets.
Key Features & Benefits
l Self-Cleaning Design: The V-shaped opening reduces the risk of particles getting wedged in the slots, significantly lowering maintenance downtime.
l Maximum Structural Integrity: The fusion-welded points at every intersection create a rigid, self-supporting structure that handles extreme pressure and heavy mechanical loads.
l Large Open Area: Despite its strength, wedge wire provides a high percentage of open area, ensuring high flow rates with minimal pressure drop.
l Extreme Durability: Resistant to abrasion and corrosion, these screens are designed for service lives measured in years, not months.
Product Formats & Configurations
l Wedge Wire Cylinders / Cartridges: Used in automatic self-cleaning filters and pulp/paper processing.
l Flat Screen Panels: Common in vibrating decks for mining and wastewater "Static Screens."
l Support Grids / Hub & Header Laterals: Critical components for ion exchange, sand filters, and carbon towers.
l Sieve Bend Screens: Curved panels used for high-capacity dewatering and mineral processing.
Primary Industrial Applications
Water Treatment: Intake screens for desalination, sand filter underdrains, and resin traps.
Food & Beverage: Lauter tun screens for brewing, sugar juice filtration, and vegetable processing.
Oil & Gas: Sand control screens, catalyst support grids in hydrocrackers, and refinery internals.
Mining & Aggregates: Dewatering, sizing, and media recovery in coal and mineral plants.
Pulp & Paper: Fiber recovery and coating color filtration.
FAQ – Wedge Wire Screens
Q: Why choose Wedge Wire over Perforated Metal or Woven Mesh?
A: Perforated metal has limited open area, and woven mesh is fragile. Wedge wire offers the best of both worlds: the strength of a plate with the precision and open area of a mesh, plus the unique non-clogging V-slot.
Q: What is the smallest slot size you can achieve?
A: We can manufacture precision slots as small as 20 microns (0.02 mm), though standard industrial applications typically range from 50 microns to 5 mm.
Q: Are these suitable for high-pressure backwashing?
A: Absolutely. The welded construction is designed to withstand frequent backpulse cycles without fatigue or slot expansion.
