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The Definitive Guide to Choosing the Right Filtration Method for Your Irrigation System

everfilt high pressure sand media filters
Everfilt® High-Pressure Sand Media Filters

When it comes to safeguarding your irrigation system, selecting the appropriate filtration method is paramount. While cost may be a consideration, basing your choice solely on price could lead to substantial long-term expenses. In this guide, we'll explore the key factors to consider and delve into the three common filtration methods used in agriculture: Disc Filters, Screen Filters, and Sand Media Filters.

Why Filtration Matters

Filtration serves the critical purpose of shielding irrigation systems from particles that could cause blockages. The efficacy of a filtration system is determined by its ability to retain a high percentage of particles that might clog emitters. To choose the right filtration method, it's crucial to finalize the design of your drip or micro-system, considering factors such as emitter sensitivity and design specifications.

Information You Need for Choosing the Right System

To specify the ideal filtration system, gather the following information:

  • Smallest flow path opening of the emitter

  • Water quality – identify whether particles to be removed are organic or inorganic.

  • Working pressure and water volume to be filtered.

Common Filtration Methods

Disc Filters:

  • Automatic and Conventional Ring Filters.

  • Construction: Plastic discs with small grooves.

  • Advantages: Widely used, effective.

  • Considerations: Working pressure, pressure loss, and backwash water volume.

Screen Filters:

  • Design: Utilizes rigid or flexible screens.

  • Function: Separates sand and fine particles.

  • Factors: Working pressure, effectiveness in particle removal.

Sand Media Filters (Sand Filters):

  • Principle: Uses material like sand/gravel to trap particles.

  • Considerations: Backwash water volume, maintenance, and power requirements.

Key Considerations for Choosing the Right Filter


  • Locate filters as close as possible to the irrigated area.

  • Consider secondary filters for added protection.


  • Regularly clean filters to prevent clogs.

  • Choose a system that facilitates easy maintenance.

Extreme Conditions:

Select a filter capable of handling poor-quality water during adverse conditions.

Consider a combination of methods for water purification in extreme cases.

Seeking Expert Advice

Consulting an expert is invaluable when selecting components for an effective filtration system. While the financial implications are a consideration, the operational benefits far outweigh any marginal extra cost associated with quality components. In conclusion, the right filtration method is essential for the longevity and efficiency of your irrigation system. Prioritize functionality, ease of maintenance, and the ability to handle adverse conditions.


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