The 2009 edition of IS 10124 Part 9 defines the technical criteria for manufactured unplasticized PVC (PVC-U) 60° bends utilized in drinking water piping systems. It details the dimensions, fabrication methods, identification marks, and pressure ratings in accordance with IS 4985, ensuring proper integration and safety in potable water distribution. This code is vital for manufacturers, design engineers, and quality assurance personnel working with PVC piping assemblies.
Overview
The 2009 edition of IS 10124 Part 9 defines the technical criteria for manufactured unplasticized PVC (PVC-U) 60° bends utilized in drinking water piping systems. It details the dimensions, fabrication methods, identification marks, and pressure ratings in accordance with IS 4985, ensuring proper integration and safety in potable water distribution. This code is vital for manufacturers, design engineers, and quality assurance personnel working with PVC piping assemblies.
Audience
Contents
Structure
Overview of IS 10124 Part 9 (2009) defining essential dimensions and minimum wall thicknesses for 60° bends used in potable water PVC piping. Applies to both plain-ended and elastomeric sealing ring joint types, with dimensions and thickness varying according to nominal pipe size and designated pressure class.
Lists key references including IS 4985 for PVC pipes and IS 10124 Part 1 for general fabricated fittings. Presents dimensional formulas such as bend radius (R = 3 × nominal outside diameter) and Y dimension calculation (Y = 2 × R × sin 60°). Defines minimum wall thickness as 90% of corresponding pipe thickness, rounded to 0.1 mm.
Details the production specifications for 60° bends adhering to dimensional tables and figures. Describes variations for elastomeric sealing ring joint bends. Summarizes wall thickness requirements per pressure class and licensing conditions for Standard Mark use under BIS regulations.
Defines primary dimensions such as Y (bend height), L (end length for plain ends), R (bend radius), and t (minimum wall thickness). Provides tables illustrating these dimensions across nominal sizes and pressure classes, emphasizing structural integrity and compatibility.
Specifies indelible marking requirements including manufacturer identification, pipe size and class, bend angle (60°), and color coding by pressure class. Details optional BIS Standard Mark application and licensing. Includes tables summarizing key dimension and wall thickness data.
Outlines marking placement on the outer curve with clear, durable methods such as embossing or engraving. Lists required marking elements including bend angle, nominal size, manufacturer ID, material grade, and batch number.
Describes conditions for applying BIS Standard Mark in compliance with the Bureau of Indian Standards Act 1986. Provides formulas for minimum wall thickness and bend radius, along with dimensional tables for various nominal sizes and pressure classes.
Presents graphical representations and key geometric parameters for 60° bends including radius, length, and angle. Explains arc length calculation and adaptations for elastomeric sealing ring joint bends.
Provides comprehensive tables showing dimensions and minimum wall thicknesses for plain and socketed ends of 60° bends, across different nominal sizes and pressure ratings.
Summarizes overarching requirements for materials, dimensions, testing, sampling, and conformity assessment applicable to all fabricated PVC-U fittings including bends, tees, and reducers.
Frequently Asked
The dimensional requirements for fabricated PVC-U 60° bends must comply with the specifications outlined in Table 1 and Figure 1 of IS 10124 Part 9 for standard bends. Elastomeric sealing ring joint bends follow Table 2 and Figure 2. These include parameters such as outside diameter, centerline radius, socket dimensions, and wall thickness based on pressure class, ensuring proper fit and performance.
IS 10124 Part 9 identifies the following pressure classes for 60° bends: Class 2 (0.4 MPa, Blue), Class 3 (0.6 MPa, Green), Class 4 (0.8 MPa, Brown), Class 5 (1.0 MPa, Yellow), Class 6 (1.25 MPa, Black), and a separate Plumbing category (Pink). These classes correspond to working pressure ratings per IS 4985 and guide wall thickness and marking.
Each 60° bend should bear a permanent mark including the manufacturer’s name or identification, nominal size, pressure class as per IS 4985, the bend angle (60°), and a color code representing the fitting class. The color codes range from blue for Class 2 to pink for plumbing fittings. The Standard Mark of BIS may also be applied subject to licensing.
Yes, IS 10124 Part 9 permits both plain-ended and socketed 60° bends. Bends can have plain ends or sockets on one or both ends, with socket dimensions conforming to IS 10124 Part 1. The choice between plain and socketed ends depends on agreement between manufacturer and purchaser.
60° bends with elastomeric sealing ring joints must adhere to dimensional tolerances and profiles specified in Table 2 and Figure 2 of IS 10124 Part 9. This includes precise groove dimensions, socket depths, and surface finishes to ensure effective sealing and mechanical integrity. These bends differ from plain-ended bends to accommodate sealing rings and maintain leak-tight connections.
Ask AI about any clause, requirement, or provision in IS 10124 PART 9. Get instant, clause-cited responses powered by our indexed library.
Free tier includes 150 queries (50 AI + 100 Reference) · No credit card required