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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Sight Glass Valve Types, HSN Code, Price & Top Manufacturers in India

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Sight glass valves are critical components used in pipelines to observe fluid flow, mainly in Udhhyog and industrial systems. They come in various types like tubular, double window, and full view, each suited for specific pressure and temperature conditions. The standard HSN code is 8481, and pricing varies depending on the material and size, typically ranging from ₹400 to ₹5000 in India.

Top Indian manufacturers offer reliable quality with materials like SS, brass, bronze, and MS. You can buy from verified suppliers listed on platforms like TradeIndia, IndiaMART, and Justdial. Always choose based on pressure rating, compatibility, and transparency needs.

 Types of Sight Glass Valves

1. Full View Sight Glass Valve

  • Offers 360° visibility

  • Best for clear fluids

  • Available in SS and borosilicate glass

 2. Double Window Sight Glass Valve

 3. Tubular Sight Glass Valve

  • Cylindrical glass tube

  • Suitable for vertical flow lines

  • Economical and easy to maintain

 4. Reflex & Transparent Sight Glass

  • Used in boilers and chemical tanks

  • Accurate level indication

TypeUse CaseMaterialRange
Full ViewClear liquids, food-gradeSS, Glass₹800–₹3000
Double WindowSteam, chemicalsMS, SS₹1200–₹4500
TubularVertical linesBrass, SS₹400–₹1500
Reflex/TransparentLevel gaugesGlass + Metal₹1500–₹5000

 Sight Glass Valve HSN Code

 What is the HSN Code of Sight Glass Valves?

  • HSN Code: 8481

  • Category: Taps, cocks, valves, and similar appliances for pipes

  • Applicable GST: 18%

 Sight Glass Valve Price in India (2024)

 Average Price Range:

  • ½" SS Sight Glass Valve: ₹400 – ₹900

  • 1" Bronze Sight Glass Valve: ₹1000 – ₹2500

  • Industrial Full View Valve: ₹1800 – ₹5000

Price Depends On:

  • Valve Size (½" to 4")

  • Valve Type (Double window, tubular, etc.)

  • Material Used (SS, MS, Brass, Bronze)

  • Application (Udyog process, chemical line, food-grade, etc.)

 Top Sight Glass Valve Manufacturers in India

Popular Brands & Udyog-Trusted Suppliers

  1. Beekay Valves – Delhi

  2. GM Engineering – Gujarat

  3. Leader Valves – Punjab

  4. DPP Valves – Maharashtra

  5. DRP Valve Udyog – Rajasthan

 Where to Buy:

  • Online B2B: TradeIndia, Justdial, IndiaMART

  • Offline Dealers: Industrial areas in Delhi, Mumbai, Pune, Ludhiana

H2: FAQs – Sight Glass Valves

What is a sight glass valve used for?

Used to visually inspect liquid flow in industrial pipelines.

What are the main types of sight glass valves?

Full view, double window, tubular, and transparent sight glasses.

What is the HSN code for sight glass valves?

HSN code is 8481.

What materials are used in sight glass valves?

Stainless steel, brass, bronze, mild steel, and borosilicate glass.

Where can I buy sight glass valves in bulk?

From B2B sites like TradeIndia, Justdial, and IndiaMART, or manufacturers directly.

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