Dual Plate, Wafer & Swing: Exploring the Top Non-Return and Check Valve Types with Pricing

 



Introduction

Non-return valves (NRVs), also known as check valves, are crucial components in industrial and plumbing systems. These valves ensure unidirectional flow and prevent backflow, protecting equipment and maintaining operational efficiency. In the Udhhyog sector, they are widely used in water pumps, hydraulic lines, air systems, and more.



Top Check Valve Types

1. Dual Plate Check Valve

  • Design: Two spring-loaded plates mounted on a central hinge.

  • Application: Ideal for industrial pipelines, HVAC systems, and water treatment plants.

  • Benefits:

    • Lightweight and compact

    • Low pressure drop

    • Easy to install horizontally or vertically

2. Wafer Type Check Valve

  • Design: Thin profile, fits between two flanges.

  • Application: Common in water supply, oil & gas, and chemical industries.

  • Benefits:

    • Space-saving design

    • Quick response to flow reversal

    • Suitable for limited-space installations

3. Swing Check Valve

  • Design: Hinged disc swings open and closed.

  • Application: Used in water, sewage, and low-velocity fluid systems.

  • Benefits:

    • Reliable for large flow rates

    • Simple construction

    • Low maintenance

Materials & Sizes Available

Valve TypeCommon MaterialsAvailable Sizes
Dual PlateSS304, SS316, CI, WCB1" to 24"
WaferSS, Brass, Bronze, PVC½" to 12"
SwingMS, CI, SS, Brass1" to 36"

Price Comparison by Valve Type (Approx.)

Valve Type1-Inch Size Price (INR)Industrial Range (INR)
Dual Plate₹350–₹600₹600–₹6,000
Wafer₹150–₹300₹300–₹3,500
Swing₹200–₹400₹400–₹5,000

Note: Prices vary by brand, material, and Udyog volume orders.

Applications in Udyog (Industry)

  • Water Supply Systems

  • Chemical Processing Units

  • Oil & Gas Plants

  • Power Plants

  • Pulp & Paper Industries

  • Food & Beverage Processing

How to Select the Right NRV or Check Valve

  1. Check the fluid type – gas, liquid, or slurry.

  2. Assess system pressure and temperature.

  3. Choose correct material – based on corrosion resistance and application.

  4. Ensure size compatibility with the pipeline.

  5. Confirm Udyog compliance standards (ISI, API, etc.).

FAQ – Non-Return Valves

What is the purpose of a non-return valve?

It allows fluid to flow in one direction and prevents reverse flow, protecting pumps and piping systems.

What is the most common type of check valve?

Swing and wafer check valves are among the most commonly used across plumbing and industrial Udhhyog.

Where are dual plate NRVs used?

Dual plate NRVs are commonly used in large-scale industrial Udyog, especially in power and chemical sectors.

How much does a 1-inch check valve cost?

A 1-inch check valve generally costs between ₹150 to ₹600 depending on the type and material.

Which valve is best for vertical installation?

Wafer and dual plate valves are ideal for vertical installations due to their compact, responsive design.

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