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Non-Return Valves

How Non-Return Valves Protect Your Plumbing System

Protect your plumbing system from backflow and pressure issues with Non-Return Valves (NRVs). Trusted by professionals, Asian Corporation offers durable, high-quality NRVs for every need.

How Non-Return Valves Protect Your Plumbing System

In any plumbing setup, ensuring the safe and correct flow of water is crucial. One of the most effective ways to achieve this is by using a Non-Return Valve (NRV). This small yet essential component plays a huge role in protecting your system from potential damage, ensuring one-way flow, and maintaining overall water hygiene.

 

The Function of a Non-Return Valve (NRV) Explained Simply

A Non-Return Valve (NRV), or check valve, is designed to permit water or fluid to flow in just one direction. When installed in your plumbing system, it automatically closes if the flow reverses, preventing contamination of your clean water supply. NRVs are crucial for maintaining proper flow regulation, whether in residential or industrial setups.
 

Common Applications of NRVs in Plumbing Systems

Non-return valves are utilized in various systems, including:

  • Residential water supply lines
  • Solar water heating systems
  • Industrial pump lines
  • Borewell connections
  • Water tanks and storage units

They play a crucial role in any system where backflow or pressure fluctuations are a concern.
 

Different Types of NRVs and What They Do
 

NRVs come in various types depending on their design and application:

  • Swing Check Valve – Common in horizontal lines, allows flow using a swinging disc.
  • Lift Check Valve – Great for high-pressure setups.
  • Ball Check Valve – Best for thick or slow-moving fluids.
  • Dual Plate Check Valve – Compact and efficient for large-scale systems.

These valves are valued not only for their protection but also for reducing maintenance in long-term plumbing use.
 

Asian Corporation offers a wide variety of NRVs tailored to Indian conditions—built to last and trusted by professionals.
 

Choosing Between an NRV and a PRV: What’s the Difference?
 

Understanding the difference between NRV (Non-Return Valve) and PRV (Pressure Reducing Valve) is important when designing a plumbing system:

  • An NRV regulates the flow direction and stops any backflow from occurring.
     
  • PRV reduces and stabilizes the pressure in the water supply line.

While NRVs act like gatekeepers, PRVs are regulators. Both are necessary for a complete and safe system, especially in multi-story buildings or homes using pump systems.
 

Will Installing an NRV Affect My Water Flow?
 

Yes, slightly. Since an NRV creates resistance to backward flow, it can marginally reduce forward water pressure. However, high-quality valves like those from Asian Corporation are engineered to minimize flow resistance while maximizing safety and durability.
 

Simple Steps to Test if Your NRV Is Working Properly

Checking your NRV’s performance isn’t complicated. Here’s a quick guide:
 

  • Shut off the main water supply.
  • Open a tap to release any remaining pressure.
  • Try gently introducing water from the outlet side.
  • If water flows backward, the NRV may be faulty.

Alternatively, a certified plumber or service technician from Asian Corporation can inspect and test the valve with professional equipment.
 

FAQs
 

Q1. What is NRV value?

The NRV value indicates the pressure or flow rate that the valve is designed to handle. It's important to select the correct rating based on the specific needs of your system.
 

Q2. Is NRV installation necessary in home plumbing?

Yes, especially in systems using pumps, overhead tanks, or solar heaters.
 

Q3. How often should NRVs be replaced?

An NRV typically lasts 5 to 10 years with regular use and clean water. However, in areas with hard water, more frequent replacements may be necessary.
 

Q4. Can I use the same valve as PRV and NRV?

No. Each valve has a unique function and they should be used as designed.
 

Q5. Why choose Asian Corporation for NRVs?

Trusted for years, Asian Corporation provides robust, high-quality plumbing solutions designed specifically for Indian water conditions.
 

Conclusion

For a safer, cleaner, and more efficient plumbing system, make sure your pipelines include a top-grade NRV—because smart plumbing starts with the right components. With trusted suppliers like Asian Corporation, you can ensure that your NRVs meet the highest standards, delivering long-lasting performance and protection for your plumbing system.