How to Use a Puddle Flange in RCC Slab Construction – Step-by-Step Guide

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  A puddle flange is a simple yet essential fitting used in civil construction to prevent water leakage where pipes pass through concrete structures. In RCC (Reinforced Cement Concrete) slabs, these flanges act as a seal that stops water from migrating along the outer surface of a pipe. Whether you are working on water tanks, basements, lift pits, or underground pipelines, installing a puddle flange correctly ensures waterproofing and structural durability. This step-by-step guide from Udhhyog , a leading supplier of GI, MS, and SS puddle flanges in India, explains how to use a puddle flange during RCC slab construction. ๐Ÿงฐ Step-by-Step Guide ✅ Step 1: Choose the Right Puddle Flange Select a puddle flange based on the pipe size and material (MS, GI, or SS). GI puddle flanges are ideal for general drainage and water pipes. Use stainless steel for corrosive environments or coastal zones. At Udhhyog , we provide puddle flanges in custom sizes with...
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Non-Return Valves (NRVs): Swing, Wafer, Foot, Dual Plate, and Pilot Operated Explained

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Non-Return Valves (NRVs): Swing, Wafer, Foot, Dual Plate, and Pilot Operated Explained

Non-return valves (NRVs), or check valves, are essential in preventing reverse fluid flow in systems. They're widely used in water supply, HVAC, petrochemical, and hydraulic Udhhyog. Selecting the right type ensures safety, reduces maintenance, and increases efficiency.


1. Swing Check Valve

A swing check valve uses a hinged disc to allow forward flow and block reverse flow. It's ideal for low-pressure applications in horizontal pipelines.


Features:

Simple mechanical design

Minimal pressure drop

Suitable for large pipe diameters

Udhhyog Applications:

Plumbing systems

Industrial pipelines

Wastewater treatment

 2. Wafer Type Check Valve

Wafer check valves are slim, lightweight, and sandwiched between two pipe flanges. They require less space and are suitable for vertical or horizontal flow.


Benefits:

Compact & space-saving

Quick installation

Low-pressure loss

Udyog Applications:

HVAC systems

Power plants

Oil & gas pipelines

 3. Foot Valve

Short Answer:

Foot valves are a type of check valve placed at the suction end of a pump, with a strainer to block debris and maintain pump prime.


Key Features:

Strainer integrated

Prevents dry running

Installed underwater

Udyog Applications:

Agricultural borewells

Industrial water pumping

Irrigation systems

4. Dual Plate Check Valve

Short Answer:

Dual plate valves use two spring-loaded plates that close automatically to prevent backflow. They're suitable for high-pressure flow systems.


Highlights:

Low weight, compact

Suitable for vertical/horizontal flow

Minimizes water hammer

Udyog Applications:

Steam & gas pipelines

Chemical industries

Marine systems

 5. Pilot-Operated Check Valve

Short Answer:

Pilot-operated check valves open or close based on pilot pressure and are highly effective in hydraulic and automation systems.


Benefits:

Accurate flow control

Handles high-pressure systems

Ideal for complex circuits

Udyog Applications:

Hydraulic presses

Aerospace engineering

Industrial automation

 Comparative Table of NRV Types

Valve Type

Application Area

Orientation

Price (1-Inch)

Maintenance

Swing Valve

Plumbing, drainage

Horizontal

₹150 - ₹600

Low

Wafer Valve

HVAC, pipelines

Horizontal/Vertical

₹300 - ₹1,000

Low

Foot Valve

Pumps, borewells

Vertical (Suction)

₹250 - ₹800

Medium

Dual Plate Valve

Steam, industrial

Horizontal/Vertical

₹800 - ₹2,000

Low

Pilot Valve

Hydraulics, machinery

Horizontal

₹1,200+

Medium

 Choosing the Right NRV for Your Udyog

Key Considerations:

Type of fluid (water, oil, air)

System pressure and temperature

Installation space

Flow direction (vertical/horizontal)

Maintenance requirements

FAQ – People Also Ask

Q1: What is the most common type of NRV used in Udyogs?

Swing and dual plate check valves are widely used due to their durability and versatility in fluid handling systems.


Q2: How do foot valves help in pump systems?

Foot valves prevent reverse water flow and debris entry, maintaining suction and preventing dry pump damage.


Q3: Are pilot-operated valves suitable for high-pressure systems?

Yes, pilot-operated check valves perform best in hydraulic and high-pressure automation systems with complex control requirements. 

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