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. 🧰 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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How to Choose the Right Sight Glass Valve for Your Industry

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 Choosing the right sight glass valve depends on your industry’s fluid type, temperature, pressure, and compatibility. Industries like pharma, ETP, or oil & gas require different materials and designs. Select based on mounting type, visibility requirements, and cleaning ease to ensure safety and efficiency in your Udhhyog operations.

🧩 What Is a Sight Glass Valve?

A Sight Glass Valve is a transparent pipeline component used to visually inspect fluid flow while allowing isolation or control using valves.

πŸ›  Key Parts:

  • Transparent viewing window (glass or acrylic)

  • Control valve (ball, globe, or gate)

  • Metal body (SS, bronze, CI)

🏭 Why Your Industry Needs the Right Sight Glass Valve

Choosing the wrong valve may cause:

  • Leakage under high pressure

  • Inaccurate fluid inspection

  • Chemical incompatibility

  • Reduced operational life

Correct choice enhances:

  • Operator safety

  • Maintenance intervals

  • Visual clarity

πŸ”Ž Selection Checklist for Sight Glass Valves

✅ 1. Material Compatibility

MaterialIndustry Use
SS316Pharma, chemical, food
BronzeOil & lubrication
Cast IronGeneral water, wastewater

✅ 2. Pressure & Temperature Rating

TypePressure (bar)Temp (°C)
Acrylic GlassUp to 10Up to 80
Borosilicate10–4080–300

✅ 3. Mounting Orientation

  • Vertical: Ideal for pipelines

  • Horizontal: Used on tanks, filters

✅ 4. Valve Type

  • Ball Valve Sight Glass: Quick shut-off

  • Globe Valve Type: Controlled throttling

  • Gate Valve Sight: High flow, minimal pressure drop

✅ 5. Cleaning & Maintenance

  • Removable glass for ease of cleaning

  • Dust-proof seals and O-rings

πŸ”„ Common Types of Sight Glass Valves by Industry

IndustryRecommended TypeSpecial Feature
PharmaSS316 Tubular TypeEasy to sterilize, clear viewing
Chemical UdyogFlanged BorosilicateCorrosion-resistant, high-temp safe
Oil & GasBronze Threaded TypeRugged, shock-absorbing
Wastewater PlantsCI Welded TypeEconomical, low-maintenance
Food & BeverageAcrylic Sight SetLow temp, budget-friendly

πŸ’Έ Sight Glass Valve Price Comparison in India (2025)

SizeMaterialAvg Price (INR)
½"–1"Bronze₹2,500 – ₹3,800
1"–2"SS316₹3,500 – ₹6,800
2"–3"Cast Iron₹4,200 – ₹7,200

🏭 Udhhyog-Focused Industrial Applications

πŸ”§ Primary Applications:

  • Monitor fluid color, clarity, contamination

  • Confirm directional flow

  • Detect bubbles/foaming

πŸ§ͺ Industrial Use Cases:

  1. ETP Plants – Check clarity post-filtration

  2. Pharma Lines – Observe sterile solutions

  3. Boiler Systems – View steam condensate

πŸ”§ Installation & Maintenance Tips

Installation:

  • Use flange gaskets and thread sealants

  • Ensure proper alignment with pipeline flow

  • Avoid overtightening bolts to prevent glass cracks

Maintenance:

  • Clean glass every 30–45 days in Udyog setups

  • Replace rubber seals annually

  • Test valve closure every 3 months

 FAQs

What type of sight glass valve is used in pharma?

SS316 tubular sight glass valves are commonly used due to their hygienic design and corrosion resistance.

Can sight glass valves handle high pressure?

Yes, borosilicate sight glass valves can handle up to 40 bar pressure depending on the build.

Which industries need sight glass valves?

Industries like chemical, food, pharma, boiler systems, and wastewater plants require sight glass valves for visual fluid monitoring.

How often should I replace the glass?

Typically every 1–2 years or earlier if cracks, fogging, or leaks appear.

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