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ZST 777 Specifications, Features & Compatibility Guide

The RK AQUA FRESH ZST 777 is a RO+UV+UF water purifier with 12 L storage capacity designed for Indian households capable of handling source water TDS up to 1000 ppm.It delivers 14-stage purification at a flow rate of 15 Litres/Hour, ensuring safe and clean drinking water.

Quick Answer

Invest in the RK Aqua Fresh ZST 777 if you require a high-capacity 12L reservoir and a rapid 15L/Hour flow rate for constant supply. Its BEE-rated engineering makes it a sustainable choice for Indian families looking to balance deep 14-stage purification with long-term operational savings.

The ZST 777 is perfect for residential users seeking a stable, mineral-retaining RO system that handles borewell water efficiently. Avoid if your daily demand exceeds domestic limits or if you seek a basic entry-level filter.

✓ Who Should Buy

  • • performance suitable for residential spaces.
  • •Verified efficiency of standard rating for reduced long-term operational costs.
  • •Structural stability for consistent cleaning under rigorous use cases.
  • •Hardware durability via premium components and advanced technology.
  • •Built-in grid protection with Standard power cycle voltage management.

✕ Who Should Avoid

  • •Spaces or usage requirements exceeding residential rated capacity.
  • •Installations prioritizing minimum capital expenditure over high-efficiency performance.
  • •Unstable grid conditions exceeding the functional threshold of Standard power cycle.
  • •Environments incompatible with water-purifiers physical and thermal dissipation specs.
Product Overview
The RK AQUA FRESH ZST 777 is a RO+UV+UF water purifier with 12 L storage capacity designed for Indian households capable of handling source water TDS up to 1000 ppm. It delivers 14-stage purification at a flow rate of 15 Litres/Hour, ensuring safe and clean drinking water. The purified water maintains TDS levels of 1000 ppm, retaining essential minerals. Key features include 14-stage purification, TDS Controller. Convenience features: Wall mountable design. Auto shut-off prevents overflow and extends filter life. Wall Mounted design suits kitchen countertops and wall spaces. Runs at 60 W on Yes, compatible with standard Indian electrical supply. Backed by a 6 Months warranty with technician visit support, manufactured in India.

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Engineering Analysis
The RO membrane removes dissolved salts, heavy metals, and contaminants, reducing TDS from raw levels to safe drinking standards. UV sterilisation eliminates bacteria, viruses, and microorganisms with 99.99% efficacy without adding chemicals. UF membrane filtration acts as a secondary barrier catching colloidal particles and biological matter larger than 0.01 microns. The 14-stage system ensures multi-layer protection across sediment, chemical, and microbial contaminants.

Technical Support & FAQs