#flowcontrolvalves

V-Tork manufactures AWWA-compliant knife gate valves that deliver rugged performance in fluid control systems. Designed to handle sludge, wastewater, and other high-solid media, these valves offer zero-leakage sealing, enhanced corrosion resistance, and robust actuation options. With easy maintenance and high reliability, V-Tork’s knife gate valves are widely used in treatment plants, chemical processing, and municipal systems. Trust a leading Indian manufacturer with global standards.

💧 Industrial Flow Control with Pilot Operated and Wafer Type NRV Valves – Powered by Udhhyog

In the world of industrial piping and fluid systems, the demand for reliable, efficient, and compact valve solutions continues to rise. Whether it’s for controlling flow direction, managing pressure, or preventing backflow, non return valves (NRVs) are essential. Among these, two of the most in-demand designs are the pilot operated non return valve and the wafer type NRV valve.

At Udhhyog, we specialize in delivering advanced flow control solutions to industries across India. With a strong presence in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and other key industrial states, our goal is to provide high-performance valves backed by engineering excellence and customer support.

In this article, we’ll explore both the pilot operated non return valve and the wafer type NRV valve, understand their working principles, advantages, applications, and how Udhhyog delivers the best in class products across sectors.

🔍 What is a Non Return Valve (NRV)?

A non return valve, also known as a check valve, allows fluid to flow in only one direction. Its primary role is to prevent reverse flow, which could otherwise damage pumps, contaminate clean lines, or disrupt system operation.

Unlike gate or globe valves, NRVs are automatic. They require no manual actuation or power supply, making them ideal for energy-efficient flow control.

🧠 Understanding the Pilot Operated Non Return Valve

The pilot operated non return valve is a smart evolution in NRV technology. Unlike conventional NRVs that depend purely on flow pressure to open or close, this type of valve includes a pilot mechanism—a control device that senses upstream or downstream conditions to trigger the valve operation.

✅ Key Features of Pilot Operated NRVs:

Precise Control: Opens only when system conditions meet specific pressure criteria.

No Slamming: Prevents sudden shut-off, reducing water hammer and shock.

Failsafe Mechanism: Designed to lock or unlock under set pilot pressures.

Remote Actuation: Some models allow manual or pneumatic overrides.

🔧 Applications:

High-pressure pumping stations

Water distribution networks

Oil and gas flow lines

Fire suppression systems

Marine and offshore platforms

These valves are especially valuable where flow reversal could damage critical equipment, or where automated safety control is required.

🧩 Wafer Type NRV Valve – Compact, Reliable, and Efficient

The wafer type NRV valve is one of the most space-efficient non return valves. It is designed to be sandwiched between two flanges in a piping system.

Instead of using a large body and bonnet like conventional valves, wafer NRVs consist of a flat disc or dual plates that open and close based on flow pressure.

✅ Benefits of Wafer Type NRV Valves:

Space Saving: Ideal for compact setups or where installation space is limited.

Lightweight Design: Reduces pipeline load and shipping cost.

Quick Installation: No need for special fittings—fits between existing flanges.

Low Pressure Drop: Disc design allows smooth, streamlined flow.

🔧 Typical Use Cases:

HVAC systems

Chemical dosing lines

Irrigation and agriculture

Cooling towers

Food and pharma processing units

At Udhhyog, our wafer type NRV valves are available in cast iron, stainless steel, bronze, and PTFE-lined variants to suit a wide range of fluids.

⚙️ Comparing Pilot Operated vs Wafer Type NRVs

FeaturePilot Operated NRVWafer Type NRVOperationControlled via pilot pressureAutomatic, spring/disk operatedInstallation SpaceRequires more spaceCompact and flange-mountedResponse TimeSlower but preciseFast closureApplicationsHigh-pressure, critical systemsStandard fluid flow systemsCostHigher due to control systemAffordable and widely used

🏭 Why Industries Prefer Udhhyog Valves

At Udhhyog, we are dedicated to delivering premium valve solutions to industries across India. Here’s why we’re the preferred partner for NRV systems:

✅ Wide Product Range:

Swing NRV

Lift NRV

Pilot operated non return valve

Wafer type NRV valve

Dual plate check valves

Foot valves and strainers

✅ Material Options:

Cast Iron (CI)

Ductile Iron (DI)

Carbon Steel (WCB)

Stainless Steel (SS 304, SS 316)

Bronze and Gunmetal

✅ Regional Expertise:

We are trusted suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and NCR regions—ensuring rapid dispatch and strong service support.

✅ Services Offered:

Bulk order support

OEM manufacturing

Technical consultation

On-site valve sizing and selection

Credit facility for loyal buyers

Explore our complete catalog: 👉 https://udhhyog.com/valves

🧰 Installation Tips for Long Valve Life

Whether you’re using a wafer type NRV valve or a pilot operated valve, correct installation is key to performance and safety.

Always verify the flow direction arrow during installation.

Use correct gaskets and flange standards.

Make sure the pipeline is free from debris before installation.

Do not overtighten bolts—use torque values recommended by the manufacturer.

For pilot operated valves, test the pilot control line for leaks or blockages.

At Udhhyog, we offer free technical support to clients for pre-installation and commissioning.

🌍 Where Are These Valves Used?

Here’s where our NRV valves deliver unmatched performance:

🚰 Water treatment plants

🏭 Chemical & petrochemical industries

🚢 Marine systems and shipyards

🛢️ Refineries and oil storage terminals

🧪 Pharma and clean water systems

🌾 Agricultural irrigation networks

🔥 Fire hydrant and suppression systems

Wherever there is flow, there is the need to control and protect—and that’s where Udhhyog comes in.

💡 How to Select the Right NRV Valve?

Choosing between pilot operated non return valve and wafer type NRV valve depends on:

✔ System pressure and flow conditions

✔ Space constraints

✔ Fluid type (corrosive, clean, viscous)

✔ Requirement of automation or pilot control

✔ Budget and maintenance access

Our engineering team at Udhhyog helps clients identify the best fit by analyzing data sheets, pressure ratings, and real-time flow demands.

📦 Udhhyog Valve Solutions – Fast, Reliable, Affordable

From custom valve sourcing to bulk supply for EPC projects, we are equipped to support industrial demands at scale.

🔹 Available Sizes: 15mm to 600mm 🔹 Pressure Classes: PN10, PN16, PN25, ANSI 150# 🔹 Certifications: ISI, ISO, IBR-compliant products 🔹 MOQ: As per customer need 🔹 Delivery Time: 2–5 working days (based on location)

🔚 Conclusion

If you're setting up a critical pumping system or optimizing a process line, the pilot operated non return valve offers unmatched control and protection. On the other hand, the wafer type NRV valve gives you compact, cost-effective backflow prevention.

At Udhhyog, we bring you both—crafted to perfection, tested for performance, and delivered with service you can trust.

💧 Industrial Flow Control with Pilot Operated and Wafer Type NRV Valves – Powered by Udhhyog

In the world of industrial piping and fluid systems, the demand for reliable, efficient, and compact valve solutions continues to rise. Whether it’s for controlling flow direction, managing pressure, or preventing backflow, non return valves (NRVs) are essential. Among these, two of the most in-demand designs are the pilot operated non return valve and the wafer type NRV valve.

At Udhhyog, we specialize in delivering advanced flow control solutions to industries across India. With a strong presence in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and other key industrial states, our goal is to provide high-performance valves backed by engineering excellence and customer support.

In this article, we’ll explore both the pilot operated non return valve and the wafer type NRV valve, understand their working principles, advantages, applications, and how Udhhyog delivers the best in class products across sectors.

🔍 What is a Non Return Valve (NRV)?

A non return valve, also known as a check valve, allows fluid to flow in only one direction. Its primary role is to prevent reverse flow, which could otherwise damage pumps, contaminate clean lines, or disrupt system operation.

Unlike gate or globe valves, NRVs are automatic. They require no manual actuation or power supply, making them ideal for energy-efficient flow control.

🧠 Understanding the Pilot Operated Non Return Valve

The pilot operated non return valve is a smart evolution in NRV technology. Unlike conventional NRVs that depend purely on flow pressure to open or close, this type of valve includes a pilot mechanism—a control device that senses upstream or downstream conditions to trigger the valve operation.

✅ Key Features of Pilot Operated NRVs:

Precise Control: Opens only when system conditions meet specific pressure criteria.

No Slamming: Prevents sudden shut-off, reducing water hammer and shock.

Failsafe Mechanism: Designed to lock or unlock under set pilot pressures.

Remote Actuation: Some models allow manual or pneumatic overrides.

🔧 Applications:

High-pressure pumping stations

Water distribution networks

Oil and gas flow lines

Fire suppression systems

Marine and offshore platforms

These valves are especially valuable where flow reversal could damage critical equipment, or where automated safety control is required.

🧩 Wafer Type NRV Valve – Compact, Reliable, and Efficient

The wafer type NRV valve is one of the most space-efficient non return valves. It is designed to be sandwiched between two flanges in a piping system.

Instead of using a large body and bonnet like conventional valves, wafer NRVs consist of a flat disc or dual plates that open and close based on flow pressure.

✅ Benefits of Wafer Type NRV Valves:

Space Saving: Ideal for compact setups or where installation space is limited.

Lightweight Design: Reduces pipeline load and shipping cost.

Quick Installation: No need for special fittings—fits between existing flanges.

Low Pressure Drop: Disc design allows smooth, streamlined flow.

🔧 Typical Use Cases:

HVAC systems

Chemical dosing lines

Irrigation and agriculture

Cooling towers

Food and pharma processing units

At Udhhyog, our wafer type NRV valves are available in cast iron, stainless steel, bronze, and PTFE-lined variants to suit a wide range of fluids.

⚙️ Comparing Pilot Operated vs Wafer Type NRVs

FeaturePilot Operated NRVWafer Type NRVOperationControlled via pilot pressureAutomatic, spring/disk operatedInstallation SpaceRequires more spaceCompact and flange-mountedResponse TimeSlower but preciseFast closureApplicationsHigh-pressure, critical systemsStandard fluid flow systemsCostHigher due to control systemAffordable and widely used

🏭 Why Industries Prefer Udhhyog Valves

At Udhhyog, we are dedicated to delivering premium valve solutions to industries across India. Here’s why we’re the preferred partner for NRV systems:

✅ Wide Product Range:

Swing NRV

Lift NRV

Pilot operated non return valve

Wafer type NRV valve

Dual plate check valves

Foot valves and strainers

✅ Material Options:

Cast Iron (CI)

Ductile Iron (DI)

Carbon Steel (WCB)

Stainless Steel (SS 304, SS 316)

Bronze and Gunmetal

✅ Regional Expertise:

We are trusted suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and NCR regions—ensuring rapid dispatch and strong service support.

✅ Services Offered:

Bulk order support

OEM manufacturing

Technical consultation

On-site valve sizing and selection

Credit facility for loyal buyers

Explore our complete catalog: 👉 https://udhhyog.com/valves

🧰 Installation Tips for Long Valve Life

Whether you’re using a wafer type NRV valve or a pilot operated valve, correct installation is key to performance and safety.

Always verify the flow direction arrow during installation.

Use correct gaskets and flange standards.

Make sure the pipeline is free from debris before installation.

Do not overtighten bolts—use torque values recommended by the manufacturer.

For pilot operated valves, test the pilot control line for leaks or blockages.

At Udhhyog, we offer free technical support to clients for pre-installation and commissioning.

🌍 Where Are These Valves Used?

Here’s where our NRV valves deliver unmatched performance:

🚰 Water treatment plants

🏭 Chemical & petrochemical industries

🚢 Marine systems and shipyards

🛢️ Refineries and oil storage terminals

🧪 Pharma and clean water systems

🌾 Agricultural irrigation networks

🔥 Fire hydrant and suppression systems

Wherever there is flow, there is the need to control and protect—and that’s where Udhhyog comes in.

💡 How to Select the Right NRV Valve?

Choosing between pilot operated non return valve and wafer type NRV valve depends on:

✔ System pressure and flow conditions

✔ Space constraints

✔ Fluid type (corrosive, clean, viscous)

✔ Requirement of automation or pilot control

✔ Budget and maintenance access

Our engineering team at Udhhyog helps clients identify the best fit by analyzing data sheets, pressure ratings, and real-time flow demands.

📦 Udhhyog Valve Solutions – Fast, Reliable, Affordable

From custom valve sourcing to bulk supply for EPC projects, we are equipped to support industrial demands at scale.

🔹 Available Sizes: 15mm to 600mm 🔹 Pressure Classes: PN10, PN16, PN25, ANSI 150# 🔹 Certifications: ISI, ISO, IBR-compliant products 🔹 MOQ: As per customer need 🔹 Delivery Time: 2–5 working days (based on location)

🔚 Conclusion

If you're setting up a critical pumping system or optimizing a process line, the pilot operated non return valve offers unmatched control and protection. On the other hand, the wafer type NRV valve gives you compact, cost-effective backflow prevention.

At Udhhyog, we bring you both—crafted to perfection, tested for performance, and delivered with service you can trust.

💧 Industrial Flow Control with Pilot Operated and Wafer Type NRV Valves – Powered by Udhhyog

In the world of industrial piping and fluid systems, the demand for reliable, efficient, and compact valve solutions continues to rise. Whether it’s for controlling flow direction, managing pressure, or preventing backflow, non return valves (NRVs) are essential. Among these, two of the most in-demand designs are the pilot operated non return valve and the wafer type NRV valve.

At Udhhyog, we specialize in delivering advanced flow control solutions to industries across India. With a strong presence in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and other key industrial states, our goal is to provide high-performance valves backed by engineering excellence and customer support.

In this article, we’ll explore both the pilot operated non return valve and the wafer type NRV valve, understand their working principles, advantages, applications, and how Udhhyog delivers the best in class products across sectors.

🔍 What is a Non Return Valve (NRV)?

A non return valve, also known as a check valve, allows fluid to flow in only one direction. Its primary role is to prevent reverse flow, which could otherwise damage pumps, contaminate clean lines, or disrupt system operation.

Unlike gate or globe valves, NRVs are automatic. They require no manual actuation or power supply, making them ideal for energy-efficient flow control.

🧠 Understanding the Pilot Operated Non Return Valve

The pilot operated non return valve is a smart evolution in NRV technology. Unlike conventional NRVs that depend purely on flow pressure to open or close, this type of valve includes a pilot mechanism—a control device that senses upstream or downstream conditions to trigger the valve operation.

✅ Key Features of Pilot Operated NRVs:

Precise Control: Opens only when system conditions meet specific pressure criteria.

No Slamming: Prevents sudden shut-off, reducing water hammer and shock.

Failsafe Mechanism: Designed to lock or unlock under set pilot pressures.

Remote Actuation: Some models allow manual or pneumatic overrides.

🔧 Applications:

High-pressure pumping stations

Water distribution networks

Oil and gas flow lines

Fire suppression systems

Marine and offshore platforms

These valves are especially valuable where flow reversal could damage critical equipment, or where automated safety control is required.

🧩 Wafer Type NRV Valve – Compact, Reliable, and Efficient

The wafer type NRV valve is one of the most space-efficient non return valves. It is designed to be sandwiched between two flanges in a piping system.

Instead of using a large body and bonnet like conventional valves, wafer NRVs consist of a flat disc or dual plates that open and close based on flow pressure.

✅ Benefits of Wafer Type NRV Valves:

Space Saving: Ideal for compact setups or where installation space is limited.

Lightweight Design: Reduces pipeline load and shipping cost.

Quick Installation: No need for special fittings—fits between existing flanges.

Low Pressure Drop: Disc design allows smooth, streamlined flow.

🔧 Typical Use Cases:

HVAC systems

Chemical dosing lines

Irrigation and agriculture

Cooling towers

Food and pharma processing units

At Udhhyog, our wafer type NRV valves are available in cast iron, stainless steel, bronze, and PTFE-lined variants to suit a wide range of fluids.

⚙️ Comparing Pilot Operated vs Wafer Type NRVs

FeaturePilot Operated NRVWafer Type NRVOperationControlled via pilot pressureAutomatic, spring/disk operatedInstallation SpaceRequires more spaceCompact and flange-mountedResponse TimeSlower but preciseFast closureApplicationsHigh-pressure, critical systemsStandard fluid flow systemsCostHigher due to control systemAffordable and widely used

🏭 Why Industries Prefer Udhhyog Valves

At Udhhyog, we are dedicated to delivering premium valve solutions to industries across India. Here’s why we’re the preferred partner for NRV systems:

✅ Wide Product Range:

Swing NRV

Lift NRV

Pilot operated non return valve

Wafer type NRV valve

Dual plate check valves

Foot valves and strainers

✅ Material Options:

Cast Iron (CI)

Ductile Iron (DI)

Carbon Steel (WCB)

Stainless Steel (SS 304, SS 316)

Bronze and Gunmetal

✅ Regional Expertise:

We are trusted suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, and NCR regions—ensuring rapid dispatch and strong service support.

✅ Services Offered:

Bulk order support

OEM manufacturing

Technical consultation

On-site valve sizing and selection

Credit facility for loyal buyers

Explore our complete catalog: 👉 https://udhhyog.com/valves

🧰 Installation Tips for Long Valve Life

Whether you’re using a wafer type NRV valve or a pilot operated valve, correct installation is key to performance and safety.

Always verify the flow direction arrow during installation.

Use correct gaskets and flange standards.

Make sure the pipeline is free from debris before installation.

Do not overtighten bolts—use torque values recommended by the manufacturer.

For pilot operated valves, test the pilot control line for leaks or blockages.

At Udhhyog, we offer free technical support to clients for pre-installation and commissioning.

🌍 Where Are These Valves Used?

Here’s where our NRV valves deliver unmatched performance:

🚰 Water treatment plants

🏭 Chemical & petrochemical industries

🚢 Marine systems and shipyards

🛢️ Refineries and oil storage terminals

🧪 Pharma and clean water systems

🌾 Agricultural irrigation networks

🔥 Fire hydrant and suppression systems

Wherever there is flow, there is the need to control and protect—and that’s where Udhhyog comes in.

💡 How to Select the Right NRV Valve?

Choosing between pilot operated non return valve and wafer type NRV valve depends on:

✔ System pressure and flow conditions

✔ Space constraints

✔ Fluid type (corrosive, clean, viscous)

✔ Requirement of automation or pilot control

✔ Budget and maintenance access

Our engineering team at Udhhyog helps clients identify the best fit by analyzing data sheets, pressure ratings, and real-time flow demands.

📦 Udhhyog Valve Solutions – Fast, Reliable, Affordable

From custom valve sourcing to bulk supply for EPC projects, we are equipped to support industrial demands at scale.

🔹 Available Sizes: 15mm to 600mm 🔹 Pressure Classes: PN10, PN16, PN25, ANSI 150# 🔹 Certifications: ISI, ISO, IBR-compliant products 🔹 MOQ: As per customer need 🔹 Delivery Time: 2–5 working days (based on location)

🔚 Conclusion

If you're setting up a critical pumping system or optimizing a process line, the pilot operated non return valve offers unmatched control and protection. On the other hand, the wafer type NRV valve gives you compact, cost-effective backflow prevention.

At Udhhyog, we bring you both—crafted to perfection, tested for performance, and delivered with service you can trust.

🛠️ A Complete Guide to Non Return Valves – By Udhhyog

A non return valve (NRV), also known as a check valve, plays a vital role in preventing backflow in industrial pipelines. At Udhhyog, we understand the importance of robust and reliable valve systems for industries ranging from water supply to chemical plants, oil refineries, and wastewater treatment.

In this article, we explore different types of check valves, including the highly popular check valve type wafer and dual plate non return valve, with a focus on their applications, advantages, and why Udhhyog is the trusted choice across India.

🔍 What is a Non Return Valve?

A non return valve allows fluid to flow in only one direction. Its main purpose is to prevent reverse flow which could damage equipment, contaminate clean water supplies, or disrupt industrial processes. These valves operate automatically and do not require any external control.

At Udhhyog, we offer a complete range of non return valves made from cast iron, stainless steel, and forged carbon steel, customized for your application needs.

🧩 Difference Between Check Valve and Non Return Valve

The terms check valve non return valve are often used interchangeably. Technically, both perform the same function—allowing flow in one direction and blocking reverse flow.

The main distinction lies in design and application context:

Check Valves are often used in high-pressure systems like oil and gas pipelines.

Non Return Valves (NRVs) are more common in water supply, drainage, and low-pressure systems.

Udhhyog supplies both, offering high-quality products manufactured to meet IS, ANSI, and DIN standards.

🧱 Types of Check Valves Supplied by Udhhyog

1. Swing Check Valve (Hinged NRV)

This is the most common a non return valve type. It consists of a disc that swings open with forward flow and closes under reverse pressure.

Applications: Water treatment plants, pump discharge lines.

Advantage: Low-pressure drop, easy maintenance.

2. Lift Check Valve

Lift check valves have a disc that moves up and down inside the body. Suitable for high-pressure vertical systems.

Applications: Boilers, steam lines.

Advantage: Tight sealing and durable construction.

3. Check Valve Type Wafer

A check valve type wafer is compact, lightweight, and easy to install between flanges. It fits in systems where space is limited.

Applications: HVAC systems, chemical plants.

Advantage: Cost-effective and corrosion-resistant.

Udhhyog offers wafer check valves in stainless steel, duplex steel, and PTFE-lined options depending on media compatibility.

4. Dual Plate Non Return Valve

A dual plate non return valve is a wafer-type valve with two spring-loaded plates that open with forward flow and shut instantly when flow reverses.

Applications: Power plants, oil and gas pipelines.

Advantage: Energy-efficient, less water hammer effect.

We offer dual plate NRVs in sizes ranging from 2" to 24", suitable for horizontal and vertical pipelines.

🧪 Why Wafer-Type and Dual Plate NRVs are Preferred in Industry

Compact design: Wafer valves are much slimmer compared to full-body swing valves.

Lightweight: Easier installation and lower freight costs.

Quick shut-off: Dual plates close faster than swing discs, reducing pressure surges.

Energy efficiency: Less flow resistance means lower pump energy consumption.

🏭 Udhhyog – Your Trusted Industrial Valve Supplier

At Udhhyog, we are more than just a valve supplier—we’re a partner in your infrastructure. Whether it's a government water board, an EPC contractor, or a manufacturing unit, we’ve earned the trust of clients across India.

✅ Why Choose Udhhyog?

We are suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh

Custom Valve Solutions – Tailored to meet media type, temperature, and flow requirements.

Reliable Inventory – From ½” to 24” NRVs in cast iron, WCB, SS316, and more.

Credit Facility Available – Flexible terms for long-term partners.

Fast Delivery – PAN India network with warehouses in Delhi & NCR.

Check out our full range: 👉 https://udhhyog.com/valves

🔄 How to Select the Right Check Valve?

Choosing the right check valve non return valve depends on:

Media Type: Water, gas, steam, chemicals.

Pressure & Temperature: Choose materials accordingly (CI, SS, PTFE).

Installation Orientation: Horizontal or vertical.

Space Constraints: Use wafer or dual plate valves in compact areas.

At Udhhyog, our technical experts help clients choose the best valve type based on data sheets and flow dynamics.

🧰 Installation Tips for Long Valve Life

Always check flow direction arrow before fitting.

Ensure no pipe misalignment that could stress the valve body.

Use PTFE tape or gaskets to prevent leakage.

For wafer and dual plate types, ensure correct centering between flanges.

Regular maintenance and correct installation can increase the life of your non return valve by years.

🌏 Where Are These Valves Commonly Used?

Municipal water supply lines

Oil and gas pipelines

Firefighting systems

Sewage and drainage systems

Chemical plants

Steam & boiler lines

With rising demand for water conservation and backflow prevention, industries are rapidly switching to dual plate NRVs and wafer check valves for long-term cost and performance benefits.

🔗 Related Products from Udhhyog

MS Flanges

Ball Valves

Butterfly Valves

GI Pipes & Fittings

🛠️ A Complete Guide to Non Return Valves – By Udhhyog

A non return valve (NRV), also known as a check valve, plays a vital role in preventing backflow in industrial pipelines. At Udhhyog, we understand the importance of robust and reliable valve systems for industries ranging from water supply to chemical plants, oil refineries, and wastewater treatment.

In this article, we explore different types of check valves, including the highly popular check valve type wafer and dual plate non return valve, with a focus on their applications, advantages, and why Udhhyog is the trusted choice across India.

🔍 What is a Non Return Valve?

A non return valve allows fluid to flow in only one direction. Its main purpose is to prevent reverse flow which could damage equipment, contaminate clean water supplies, or disrupt industrial processes. These valves operate automatically and do not require any external control.

At Udhhyog, we offer a complete range of non return valves made from cast iron, stainless steel, and forged carbon steel, customized for your application needs.

🧩 Difference Between Check Valve and Non Return Valve

The terms check valve non return valve are often used interchangeably. Technically, both perform the same function—allowing flow in one direction and blocking reverse flow.

The main distinction lies in design and application context:

Check Valves are often used in high-pressure systems like oil and gas pipelines.

Non Return Valves (NRVs) are more common in water supply, drainage, and low-pressure systems.

Udhhyog supplies both, offering high-quality products manufactured to meet IS, ANSI, and DIN standards.

🧱 Types of Check Valves Supplied by Udhhyog

1. Swing Check Valve (Hinged NRV)

This is the most common a non return valve type. It consists of a disc that swings open with forward flow and closes under reverse pressure.

Applications: Water treatment plants, pump discharge lines.

Advantage: Low-pressure drop, easy maintenance.

2. Lift Check Valve

Lift check valves have a disc that moves up and down inside the body. Suitable for high-pressure vertical systems.

Applications: Boilers, steam lines.

Advantage: Tight sealing and durable construction.

3. Check Valve Type Wafer

A check valve type wafer is compact, lightweight, and easy to install between flanges. It fits in systems where space is limited.

Applications: HVAC systems, chemical plants.

Advantage: Cost-effective and corrosion-resistant.

Udhhyog offers wafer check valves in stainless steel, duplex steel, and PTFE-lined options depending on media compatibility.

4. Dual Plate Non Return Valve

A dual plate non return valve is a wafer-type valve with two spring-loaded plates that open with forward flow and shut instantly when flow reverses.

Applications: Power plants, oil and gas pipelines.

Advantage: Energy-efficient, less water hammer effect.

We offer dual plate NRVs in sizes ranging from 2" to 24", suitable for horizontal and vertical pipelines.

🧪 Why Wafer-Type and Dual Plate NRVs are Preferred in Industry

Compact design: Wafer valves are much slimmer compared to full-body swing valves.

Lightweight: Easier installation and lower freight costs.

Quick shut-off: Dual plates close faster than swing discs, reducing pressure surges.

Energy efficiency: Less flow resistance means lower pump energy consumption.

🏭 Udhhyog – Your Trusted Industrial Valve Supplier

At Udhhyog, we are more than just a valve supplier—we’re a partner in your infrastructure. Whether it's a government water board, an EPC contractor, or a manufacturing unit, we’ve earned the trust of clients across India.

✅ Why Choose Udhhyog?

We are suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh

Custom Valve Solutions – Tailored to meet media type, temperature, and flow requirements.

Reliable Inventory – From ½” to 24” NRVs in cast iron, WCB, SS316, and more.

Credit Facility Available – Flexible terms for long-term partners.

Fast Delivery – PAN India network with warehouses in Delhi & NCR.

Check out our full range: 👉 https://udhhyog.com/valves

🔄 How to Select the Right Check Valve?

Choosing the right check valve non return valve depends on:

Media Type: Water, gas, steam, chemicals.

Pressure & Temperature: Choose materials accordingly (CI, SS, PTFE).

Installation Orientation: Horizontal or vertical.

Space Constraints: Use wafer or dual plate valves in compact areas.

At Udhhyog, our technical experts help clients choose the best valve type based on data sheets and flow dynamics.

🧰 Installation Tips for Long Valve Life

Always check flow direction arrow before fitting.

Ensure no pipe misalignment that could stress the valve body.

Use PTFE tape or gaskets to prevent leakage.

For wafer and dual plate types, ensure correct centering between flanges.

Regular maintenance and correct installation can increase the life of your non return valve by years.

🌏 Where Are These Valves Commonly Used?

Municipal water supply lines

Oil and gas pipelines

Firefighting systems

Sewage and drainage systems

Chemical plants

Steam & boiler lines

With rising demand for water conservation and backflow prevention, industries are rapidly switching to dual plate NRVs and wafer check valves for long-term cost and performance benefits.

🔗 Related Products from Udhhyog

MS Flanges

Ball Valves

Butterfly Valves

GI Pipes & Fittings

🛠️ A Complete Guide to Non Return Valves – By Udhhyog

A non return valve (NRV), also known as a check valve, plays a vital role in preventing backflow in industrial pipelines. At Udhhyog, we understand the importance of robust and reliable valve systems for industries ranging from water supply to chemical plants, oil refineries, and wastewater treatment.

In this article, we explore different types of check valves, including the highly popular check valve type wafer and dual plate non return valve, with a focus on their applications, advantages, and why Udhhyog is the trusted choice across India.

🔍 What is a Non Return Valve?

A non return valve allows fluid to flow in only one direction. Its main purpose is to prevent reverse flow which could damage equipment, contaminate clean water supplies, or disrupt industrial processes. These valves operate automatically and do not require any external control.

At Udhhyog, we offer a complete range of non return valves made from cast iron, stainless steel, and forged carbon steel, customized for your application needs.

🧩 Difference Between Check Valve and Non Return Valve

The terms check valve non return valve are often used interchangeably. Technically, both perform the same function—allowing flow in one direction and blocking reverse flow.

The main distinction lies in design and application context:

Check Valves are often used in high-pressure systems like oil and gas pipelines.

Non Return Valves (NRVs) are more common in water supply, drainage, and low-pressure systems.

Udhhyog supplies both, offering high-quality products manufactured to meet IS, ANSI, and DIN standards.

🧱 Types of Check Valves Supplied by Udhhyog

1. Swing Check Valve (Hinged NRV)

This is the most common a non return valve type. It consists of a disc that swings open with forward flow and closes under reverse pressure.

Applications: Water treatment plants, pump discharge lines.

Advantage: Low-pressure drop, easy maintenance.

2. Lift Check Valve

Lift check valves have a disc that moves up and down inside the body. Suitable for high-pressure vertical systems.

Applications: Boilers, steam lines.

Advantage: Tight sealing and durable construction.

3. Check Valve Type Wafer

A check valve type wafer is compact, lightweight, and easy to install between flanges. It fits in systems where space is limited.

Applications: HVAC systems, chemical plants.

Advantage: Cost-effective and corrosion-resistant.

Udhhyog offers wafer check valves in stainless steel, duplex steel, and PTFE-lined options depending on media compatibility.

4. Dual Plate Non Return Valve

A dual plate non return valve is a wafer-type valve with two spring-loaded plates that open with forward flow and shut instantly when flow reverses.

Applications: Power plants, oil and gas pipelines.

Advantage: Energy-efficient, less water hammer effect.

We offer dual plate NRVs in sizes ranging from 2" to 24", suitable for horizontal and vertical pipelines.

🧪 Why Wafer-Type and Dual Plate NRVs are Preferred in Industry

Compact design: Wafer valves are much slimmer compared to full-body swing valves.

Lightweight: Easier installation and lower freight costs.

Quick shut-off: Dual plates close faster than swing discs, reducing pressure surges.

Energy efficiency: Less flow resistance means lower pump energy consumption.

🏭 Udhhyog – Your Trusted Industrial Valve Supplier

At Udhhyog, we are more than just a valve supplier—we’re a partner in your infrastructure. Whether it's a government water board, an EPC contractor, or a manufacturing unit, we’ve earned the trust of clients across India.

✅ Why Choose Udhhyog?

We are suppliers in Delhi, Punjab, Gujarat, Rajasthan, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh

Custom Valve Solutions – Tailored to meet media type, temperature, and flow requirements.

Reliable Inventory – From ½” to 24” NRVs in cast iron, WCB, SS316, and more.

Credit Facility Available – Flexible terms for long-term partners.

Fast Delivery – PAN India network with warehouses in Delhi & NCR.

Check out our full range: 👉 https://udhhyog.com/valves

🔄 How to Select the Right Check Valve?

Choosing the right check valve non return valve depends on:

Media Type: Water, gas, steam, chemicals.

Pressure & Temperature: Choose materials accordingly (CI, SS, PTFE).

Installation Orientation: Horizontal or vertical.

Space Constraints: Use wafer or dual plate valves in compact areas.

At Udhhyog, our technical experts help clients choose the best valve type based on data sheets and flow dynamics.

🧰 Installation Tips for Long Valve Life

Always check flow direction arrow before fitting.

Ensure no pipe misalignment that could stress the valve body.

Use PTFE tape or gaskets to prevent leakage.

For wafer and dual plate types, ensure correct centering between flanges.

Regular maintenance and correct installation can increase the life of your non return valve by years.

🌏 Where Are These Valves Commonly Used?

Municipal water supply lines

Oil and gas pipelines

Firefighting systems

Sewage and drainage systems

Chemical plants

Steam & boiler lines

With rising demand for water conservation and backflow prevention, industries are rapidly switching to dual plate NRVs and wafer check valves for long-term cost and performance benefits.

🔗 Related Products from Udhhyog

MS Flanges

Ball Valves

Butterfly Valves

GI Pipes & Fittings