MS Puddle Flange for Water Tank – Use, ISI Codes & Installation Guide
MS Puddle Flange for Water Tank – Use, ISI Codes & Installation Guide
When constructing water tanks, sump tanks, or underground pipelines, one critical component is the MS puddle flange. It serves as a sealing device to prevent leakage where a pipe enters or exits an RCC structure. In this guide, we explore the role of MS puddle flanges in water tank construction, installation tips, ISI code standards, and where to buy quality products at the best price in India.
What Is a Puddle Flange in a Water Tank?
A puddle flange is a ring-like flange welded around a pipe that is embedded in concrete. Its purpose is to act as a physical barrier to water seepage between the pipe and the concrete. The MS (mild steel) variant is preferred for its strength and cost-efficiency in industrial and residential water tanks.
Applications of MS Puddle Flanges
- Overhead water tanks
- Underground sumps
- Firefighting water storage tanks
- Rainwater harvesting tanks
- Sewage and effluent treatment tanks
ISI Code & Fabrication Standards
While there is no single IS code solely for puddle flanges, manufacturers fabricate these as per standards related to steel pipes and flanges such as:
- IS 6392 – Steel Pipe Flanges
- IS 1239 – Mild Steel Tubes and Fittings
- IS 2062 – Steel Plates for Structural Use
Ensure your supplier uses certified steel and shares a fabrication drawing before dispatch.
Installation Tips for RCC Water Tank Projects
- Choose correct size (NB) matching your pipe outer diameter
- Ensure puddle flange is welded concentrically and checked for leaks
- Insert flange in RCC shuttering at required elevation
- Anchor using welding rods or reinforcements to keep it fixed
- Allow concrete to settle and cure fully around flange
Puddle Flange Sizes for Water Tanks
- 25 NB – Small-scale plumbing/rainwater tanks
- 50 NB – Domestic underground sumps
- 100 NB to 200 NB – Industrial water storage tanks
- 300 NB to 600 NB – Fire tanks, drainage systems
Where to Buy MS Puddle Flange for Water Tanks?
Udhhyog is a trusted supplier of ISI-certified MS puddle flanges in India. Sizes from 25NB to 600NB are available with epoxy or GI coating for waterproofing. You can place bulk orders and request custom fabrications for your tank project.
Related Pages
- MS Puddle Flange – Sizes, Weight & Price
- Download MS Puddle Flange Price PDF
- Top MS Puddle Flange Manufacturers
- Buy MS Puddle Flange in Delhi NCR
FAQs – MS Puddle Flange for RCC Water Tanks
Q1. Why is a puddle flange needed in water tanks?
It prevents water from seeping out where the pipe penetrates the RCC structure.
Q2. Can MS puddle flange be used in sewage tanks?
Yes, provided it has an epoxy coating for corrosion resistance.
Q3. What size is suitable for 4-inch water inlet?
Use a 100 NB MS puddle flange (actual OD approx. 114.3mm).
Q4. Is epoxy or GI better for waterproofing?
Epoxy is superior for long-term chemical and corrosion resistance.
Q5. How do I get a technical drawing?
Contact Udhhyog to receive a fabrication drawing based on your site’s RCC specs.
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