In fluid and pipeline systems, ensuring one-way flow is crucial to avoid backflow and system damage. That’s where reflux valves come into play. Also known as non-return valves (NRVs), reflux valves are used in water supply lines, sewage systems, pumping stations, and more.
As a trusted reflux valve manufacturer and supplier in Delhi, Udhhyog offers premium-quality, long-lasting valves for municipal, commercial, and industrial use.
This article explains what a reflux valve is, how it works, its diagram, pricing, and where to get the best reflux valve in Delhi.
What is a Reflux Valve?
A reflux valve is a type of non-return valve that allows fluid to flow in only one direction and automatically prevents backflow. It is typically installed in pumping systems, especially on the delivery side of pumps.
Reflux Valve is Also Known As:
NRV (Non-Return Valve)
One-Way Valve
Check Valve
Non-Return Check Valve
Reflux Valve Working Principle
The valve has a disc or flap that opens when the fluid flows forward. When reverse flow occurs, the disc automatically closes due to gravity or spring action, preventing backflow.
This makes reflux valves essential in vertical pipelines and pumping applications, especially where system damage due to reverse pressure must be avoided.
Reflux Valve Diagram
The reflux valve diagram typically includes:
Valve body
Disc/flap or check plate
Flow arrow (direction indicator)
Spring (in spring-loaded variants)
The diagram helps engineers and technicians understand installation orientation, internal structure, and maintenance procedure.
Types of Reflux Valves
1. Swing Type Reflux Valve
Disc swings open/close based on flow.
Commonly used in sewage and water supply systems.
2. Lift Type Reflux Valve
Disc lifts vertically during forward flow.
Best for high-pressure applications.
3. Spring-Loaded Reflux Valve
Spring ensures quick closing action.
Suitable for vertical or inclined pipelines.
4. Dual Plate Check Valve
Two spring-loaded plates.
Compact, lightweight option for industrial systems.
Where are Reflux Valves Used?
✔ Water supply systems
✔ Sewage treatment plants
✔ Drainage lines
✔ Firefighting pipelines
✔ Irrigation systems
✔ Industrial fluid transfer lines
✔ Pump delivery pipelines
Reflux Valve Price List in Delhi
Here’s a general pricing range based on valve size and material:
| Size (mm) | Type | Material | Price Range (INR) |
|---|---|---|---|
| 50 mm | Swing Type | Cast Iron | ₹1,000 – ₹1,800 |
| 80 mm | Swing Type | Cast Iron | ₹1,500 – ₹2,200 |
| 100 mm | Spring Loaded | Ductile Iron | ₹2,500 – ₹4,500 |
| 150 mm | Dual Plate | SS/DI | ₹4,000 – ₹7,000 |
| 200 mm | Lift Type | Ductile Iron | ₹6,000 – ₹10,000 |
| 250 mm+ | Custom Options | SS/CI | ₹10,000+ |
📌 Note: Prices vary by brand, pressure class (PN10/PN16), material, and order volume.
For latest rates and discounts, contact Udhhyog directly.
How to Select the Right Reflux Valve
✅ 1. Pipeline Size
Choose valve size based on pipeline diameter and flow rate.
✅ 2. Flow Direction & Orientation
Confirm installation is in the correct flow direction as per diagram.
✅ 3. Valve Type
Use swing type for water and drainage.
Use spring-loaded for vertical pipes.
✅ 4. Material Compatibility
Cast Iron – Cost-effective, suitable for water.
Ductile Iron – Stronger, high pressure.
Stainless Steel – For chemical or corrosive fluids.
✅ 5. Maintenance Access
Prefer bolted cover valves for easy inspection.
Why Choose Udhhyog – Best Reflux Valve Supplier in Delhi
At Udhhyog, we deliver top-quality reflux valves backed by:
⭐ Premium Quality Materials
Valves built from tested CI, DI, and SS with anti-corrosion coatings.
⭐ Custom Sizes & Bulk Supply
Available in 50mm to 600mm sizes, pressure class PN10, PN16.
⭐ Fast Delivery Across North India
We supply across Delhi, Haryana, Punjab, UP, J&K, and Himachal Pradesh.
⭐ Competitive Pricing
Factory-direct rates and bulk discounts.
⭐ After-Sales Support
We provide technical support, installation guidance, and product warranty.
Conclusion
A reflux valve is an essential safeguard in fluid management systems, ensuring smooth one-way flow and preventing costly damage due to backflow.
With multiple valve types and material options available, it's important to choose the right reflux valve based on your system’s size, fluid type, and orientation.
For reliable and affordable reflux valves in Delhi, Udhhyog is your go-to source for quality, service, and support.
Contact Udhhyog – Reflux Valve Manufacturer in Delhi
📞 Call Now or Visit Udhhyog to explore our complete range of check valves and non-return valve solutions.
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