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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Hydraulic Pressure Reducing Valve: Working, Types & Industrial Uses

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What is a Hydraulic Pressure Reducing Valve?

A hydraulic pressure reducing valve (PRV) automatically maintains a reduced, steady outlet pressure from a higher inlet pressure in hydraulic systems. These valves prevent damage to equipment and ensure consistent system performance across Udhhyog like manufacturing, construction, and process industries.

 How Does a Hydraulic PRV Work

A hydraulic PRV works by sensing the downstream pressure. When pressure exceeds the set limit, the valve throttles flow or closes to reduce it. It ensures safe and efficient operations in Udhhyog applications like presses, pumps, and CNC machines.

✅ Types of Hydraulic Pressure Reducing Valves

1. Direct-Acting PRV

  • Compact and fast-responding

  • Ideal for low-flow Udyog systems

2. Pilot-Operated PRV

  • Offers accurate pressure control

  • Best for high-pressure hydraulic Udyog machines

3. Relief-Type Reducing Valve

  • Diverts excess pressure to a reservoir

  • Used in mobile hydraulics and industrial presses

4. Proportional Reducing Valves

  • Electronically controlled

  • Suitable for CNC and automation Udyog sectors

๐Ÿ“Š Comparison Table: Hydraulic PRV Types

TypePressure RangeResponse TimeApplication Areas
Direct-ActingUp to 250 barFastMobile hydraulics, lifts
Pilot-OperatedUp to 400 barModerateIndustrial presses, Udyogs
Relief-TypeUp to 350 barFastSteel plants, forklifts
Proportional ValveCustomizableVariableAutomation, CNC machines

๐Ÿข Industrial Uses of Hydraulic PRVs (Udyog Applications)

Common Udyogs Using Hydraulic PRVs:

  • ⚒️ Manufacturing Units – Maintain steady force in presses

  • ⛏️ Construction Equipment – Regulate hydraulic cylinders

  • ⚖️ Chemical Plants – Control fluid flow & pressure

  • ✉️ Aerospace Workshops – High-precision machines

  • ⚙️ Automobile Udyogs – Robotics & assembly lines

Benefits for Udhhyog:

  • Prevents hydraulic system damage

  • Reduces downtime and energy loss

  • Supports accurate control in heavy-duty machines

๐Ÿ’ธ Price of Hydraulic Pressure Reducing Valves in India (2025)

Size (BSP/NPT)MaterialTypeAvg Price (INR)
1/4″ - 1″Cast Iron/BrassDirect Acting₹1,500 - ₹4,000
1″ - 2″Carbon SteelPilot Operated₹5,000 - ₹12,000
1″ - 3″SS 316Proportional Valve₹10,000 - ₹20,000

๐Ÿ“… Prices vary based on brand, certifications (ISO, CE), and quantity

How to Select the Right PRV for Your Udyog?

  1. Know Your System Pressure

  2. Choose Valve Type by Flow Needs

  3. Pick Material Based on Fluid Compatibility

  4. Check for Certifications (ISI, CE)

  5. Compare Industrial Brands: Rexroth, Yuken, Parker

 FAQ

What is the function of a hydraulic pressure reducing valve?

It regulates and lowers high inlet pressure to a controlled outlet pressure in hydraulic systems, protecting machinery and enhancing control.

Where are hydraulic PRVs used?

They're widely used in manufacturing Udyogs, construction machinery, CNC machines, chemical plants, and material handling systems.

What is the difference between pressure relief and reducing valve?

A pressure reducing valve maintains outlet pressure; a relief valve vents excess pressure to avoid damage.

What are the top brands of hydraulic PRVs in India?

Rexroth, Yuken, Parker, Eaton, and Polyhydron are preferred brands for Udyog buyers.

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