In industrial and municipal piping systems, preventing reverse flow is critical for both equipment protection and process reliability. This is where Non Return Valves (NRVs), also called check valves, come into play. Specifically, Non Return Valves that comply with IS 5312-2 standards are considered highly reliable for use in water supply, wastewater treatment, and various industrial flow systems across India.
This article explains the sizes, materials, and industrial applications of IS 5312-2 NRVs, while also highlighting why more engineers, procurement officers, and project contractors prefer standard-certified valves.
✅ What Is IS 5312-2?
IS 5312-2 is a specification issued by the Bureau of Indian Standards (BIS) that outlines the design, materials, and testing criteria for swing-type metal Non Return Valves. This standard ensures that valves are manufactured to strict quality norms, making them ideal for use in public and private infrastructure projects.
? Available Sizes – From 1” to 28”
One of the strengths of IS 5312-2 certified NRVs is the wide range of sizes available. Most leading manufacturers offer these valves in:
Small diameters like 1” and 2” for domestic and compact setups.
Medium sizes ranging from 4” to 12” for commercial and industrial pipelines.
Large diameters like 20” to 28” for high-volume municipal water supply and wastewater lines.
This flexibility makes it easy to integrate these valves into existing or new pipeline systems of varying capacities.
? Construction Materials
IS 5312-2 compliant valves are made with durability in mind. Common materials used include:
Cast Iron – Ideal for general water and wastewater applications.
Ductile Iron – Offers more strength and flexibility than cast iron.
Gunmetal or Bronze Trim – Ensures corrosion resistance, especially for seawater or chemical applications.
Stainless Steel Disc or Shaft – For high-pressure or aggressive environments.
The use of high-grade materials ensures long life, minimal wear, and lower maintenance costs over time.
? Working Principle of IS 5312-2 NRVs
These valves are swing-type, meaning the disc inside swings open to allow flow in one direction and automatically closes if the flow reverses. This prevents:
Backflow contamination
Pump damage
System pressure loss
Because they are automatic, they require no manual intervention or external control, which makes them easy to install and maintain.
? Industrial Uses & Applications
Non Return Valves IS 5312-2 are widely used in:
1. Water Supply Systems
Municipal corporations across India use NRVs in large distribution pipelines to prevent backflow when pumps are off or during maintenance work.
2. Sewage and Effluent Systems
Wastewater treatment plants rely on NRVs to keep untreated or processed water flowing in the correct direction, especially in high-volume pumping stations.
3. Firefighting Pipelines
Fire protection systems need check valves to maintain pressure and ensure that water or foam does not flow backward in multi-pump setups.
4. Irrigation Networks
Irrigation systems that depend on electric or solar pumps also use these valves to prevent reverse pressure or water hammer damage.
5. Industrial Processing Plants
Whether it's a food-grade facility or a chemical processing plant, NRVs are critical in maintaining unidirectional flow and protecting equipment.
? Why Trust IS 5312-2 Valves?
Here’s why engineers and industries prefer IS 5312-2 valves:
| Feature | Benefit |
|---|---|
| Standardized Manufacturing | Guarantees performance & reliability |
| Proven Design | Swing mechanism is time-tested & efficient |
| Certified Materials | Long-lasting under tough environments |
| Low Maintenance | Fewer breakdowns, reduced downtime |
| Available Across India | Widely stocked by valve suppliers & exporters |
? Finding a Trusted Manufacturer
If you are looking for Non Return Valve manufacturers in Ahmedabad, Gujarat — the industrial hub of India — then resilientgatevalve is a name you can trust. As a reputed Resilient Seated Sluice Valve Manufacturer, we also specialize in:
Metal Seated Sluice Valves
Air Valves Single and Double
Pressure Reducing Valves
Non Return Valve IS 5312-2
Custom-engineered valves for specific industrial needs
We ensure each product is tested, certified, and built to deliver years of hassle-free service.
? Supporting Keywords Covered:
non return valve types – Swing type (IS 5312-2), lift type, and wafer type.
non return valve manufacturers in Ahmedabad – resilientgatevalve, a top player in Gujarat.
non return valve factory in Ahmedabad – Equipped with modern testing, casting, and machining units.
non return valve factory Ahmedabad Gujarat – Strategically located for fast logistics across India.
? Contact resilientgatevalve
Looking to source IS 5312-2 Non Return Valves?
Get in touch with our team at resilientgatevalve:
? Website: resilientgatevalve
? Address: Plot No. 129/2, Shed No. 1, Cair Estate, Ranipur Road, Narol, Ahmedabad 380028, Gujarat, INDIA.
? Email: [email protected]
Conclusion:
Non Return Valves IS 5312-2 offer the ideal mix of standard compliance, durability, and easy operation. Whether you're building a water distribution network or upgrading an industrial plant, choosing valves that meet this standard ensures peace of mind and long-term value. Trust only certified manufacturers like resilientgatevalve to meet your flow control requirements.
