Water purification equipment purchase knowledge Daquan

One: Water Purifier and Its Purchase

A water purifier is a device designed to clean tap water, removing impurities such as dirt, chemicals, and harmful microorganisms. Choosing the right water purifier can significantly improve the quality of your drinking water.

When purchasing a water purifier, consider the following:

  • Opt for well-known brands to ensure reliability and performance.
  • Higher price doesn’t always mean better quality, but it often reflects advanced technology and better filtration systems.
  • Look for multi-stage filtration systems, which offer more thorough purification.
  • Reverse osmosis (RO) filters are among the most effective, especially in areas with high mineral content or hard water.

Choosing based on your local water quality is also essential:

  • In regions with hard water (like northern China or limestone areas), consider purifiers with ion exchange resin filters to reduce scale buildup.
  • If your water has high chlorine levels, color, or odor, choose a unit with more activated carbon to remove these contaminants effectively.
  • For turbid or heavily polluted water, look for a purifier that combines coarse and fine filtration, and if you don’t need direct drinking water, an RO system may be ideal.

Two: Purchasing a Pure Water Machine

A pure water machine uses reverse osmosis to produce clean water without adding any chemicals. These machines are typically divided into two types: household models for daily use and laboratory-grade units for specialized applications.

When selecting a pure water machine, keep the following in mind:

  • Check the manufacturer’s reputation and whether they have independent design and production capabilities.
  • Quality is key—look for durable materials and reliable components.
  • Prices vary widely, from budget-friendly models using domestic parts to premium units imported from the US, Hong Kong, or South Korea.
  • Ensure the machine produces enough water daily—ideally three times your family’s consumption.
  • Consider the design and ease of use. Some models are complicated to install and maintain, while others are user-friendly.
  • Check the after-sales service. A good service team can make a big difference in long-term maintenance.

Three: Water Softener and Its Purchase

A water softener helps reduce water hardness by removing calcium and magnesium ions through ion exchange. This prevents scaling in appliances and improves the overall quality of water used in homes.

Key benefits of a water softener include:

  • Extended lifespan of water heaters, boilers, and other appliances.
  • Improved appearance of bathroom fixtures, reducing unsightly stains.
  • Better skin care and hair health when using soft water for bathing.

When buying a water softener, follow these guidelines:

  • Avoid placing it near heat sources or hot water lines.
  • If your raw water isn’t up to standard, consider installing a pre-treatment system first.
  • Ensure there's enough space around the drain to prevent siphoning issues.
  • After installation, perform a backwash cycle to flush out the resin and start the regeneration process.
  • Use only food-grade salt (sun salt) with low insoluble impurities.
  • Monitor the salt level regularly and refill when necessary.
  • Check for salt bridges in the salt tank and break them if found.
  • Turn off the main valve during long periods of inactivity to avoid pressure surges.
  • Ensure the inlet pressure is between 0.2–0.5 MPa. If higher, install a pressure reducer.
  • Plan the installation carefully and make sure all required utilities (water, power, drainage) are available.

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