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Hydrocyclone Sand Separator DN50

Updated: 2026-08-05

Overview

The DN50 Cyclone Sand Separator is a static filtration device that leverages centrifugal force to remove sand and dense particles from liquids. Its DN50 (50mm) nominal diameter suits medium-flow applications, making it popular in agriculture, HVAC systems, and industrial water treatment. Unlike mesh filters, it requires no replacement cartridges, reducing long-term maintenance costs. Designed for vertical installation, the separator creates a vortex that forces particles outward toward the wall, where they settle into a collection chamber. Clean liquid exits through the top outlet. Its efficiency depends on flow velocity and particle density, with typical removal rates exceeding 90% for particles >75 microns.

Structure and Working Principle

The separator consists of a cylindrical body with tangential inlet, conical lower section, and central outlet. Fluid enters at high velocity, generating a spiral flow pattern. Centrifugal action throws particles to the perimeter, where gravity directs them to the sediment chamber. Key structural elements include abrasion-resistant liners (for harsh slurries) and purge valves for manual sludge removal. Some models integrate automatic flushing systems. The absence of moving parts ensures minimal wear, though design variations exist, such as multi-cyclone arrays for higher capacities.

Key Features

1. **Zero Maintenance**: No replaceable parts under normal operation. 2. **High Efficiency**: Removes particles down to 50–100 microns depending on flow conditions. 3. **Material Versatility**: Polypropylene units resist chemicals, while stainless steel handles high temperatures. Additional features may include transparent inspection windows (for poly models) or magnetic traps to capture ferrous debris. Pressure loss is typically 0.5–2 bar, requiring pump capacity adjustments in some systems.

Application Areas

Primary uses include **irrigation systems** (preventing drip emitter clogging), **cooling towers** (protecting heat exchangers), and **mining slurry pipelines**. Food processing plants employ stainless steel variants to meet hygiene standards. In aquaculture, these separators maintain water clarity by removing suspended solids. They’re also integrated into pre-filtration stages for reverse osmosis systems, extending membrane life. Flow rates for DN50 models generally range from 5–20 m³/h.

Maintenance and Precautions

Inspect sediment chambers monthly; purge when filled to 50% capacity. For abrasive slurries, check liner thickness annually using ultrasonic testing. Avoid over-tightening flange connections to prevent material stress. Chemical compatibility is critical—PVC bodies degrade with certain solvents. Install pressure gauges upstream/downstream to monitor efficiency drops, which indicate excessive buildup or incorrect flow rates. In freezing conditions, drain the unit to prevent cracking.

B2B Procurement Guide

Specify **connection standards** (e.g., ANSI flanges or threaded). Bulk orders (50+ units) often attract 10–15% discounts. Lead times vary: stock items ship in 1–2 weeks, while custom materials (e.g., Hastelloy) may require 6–8 weeks. Certifications like NSF/ANSI 61 (for potable water) or ATEX (explosive environments) add 20–30% to costs. Request CFD simulation reports for high-pressure applications (>10 bar). Consider total cost of ownership—cheaper cast iron models may need frequent replacement in saline environments.

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