Injection Moulded PVC Socket Fittings With Solvent Cement Joints for Water Supplies, Part 5: Specific Requirements for 45-degree Tees
1987 Edition

IS 7834 Part 5: Overview of Application and Specifications for 45° Tees

• Scope Definition: Establishes criteria for the production, dimensional standards, tolerance limits, and marking conventions for injection moulded PVC 45° tee socket fittings intended for water supply infrastructure.

• General Framework: Adherence to IS 7834 Part 1 is mandatory for material standards, manufacturing techniques, testing, sampling, and inspection.

Dimensional Data for 45° Tee Laying Lengths (Clause 2.2.2)

• Important Note: Larger diameter 45° elbows are generally not recommended according to ISO standards.

Marking and Cross-Referencing Other Fitting Types

• Marking protocols follow BIS specifications outlined in Clause 3.1.
• Other parts of IS 7834 address different fittings such as elbows, sockets, unions, and caps.

flowchart LR
    A[IS 7834 Part 5] --> B[Scope: 45° PVC Tee Fittings]
    B --> C[Manufacturing & Dimensional Requirements]
    B --> D[Tolerance Specifications]

IS 7834 Part 5: Specifications and Requirements for 45° PVC Tee Socket Fittings

2.1 Scope

• Defines the manufacturing processes, dimensional standards, permissible tolerances, and marking for injection moulded PVC 45° tee fittings used in potable water supply systems.

2.2 Dimensions and Tolerances (Clause 2.2.2)

Note: Usage of 45° elbows larger than 160 mm is discouraged as per ISO guidelines.

2.3 Marking Requirements (Clause 3.1)

• Markings must adhere to BIS standards including manufacturer's identification, size, and pressure class.

2.4 General Manufacturing Criteria (Clause 2.1)

• Material selection, production method, testing, sampling, and inspection should comply with IS 7834 Part 1.

Visual Overview of 45° Tee Dimensions

flowchart LR
    A[PVC 45° Tee] --> B[Laying Length Z]
    A --> C[Socket Length Z1]

General Guidelines under IS 7834 Part 5 for 45° Tee Fittings

• Material and Fabrication: Must align with IS 7834 Part 1 (1987) covering injection moulded PVC fittings including protocols for materials, production, testing, and inspections.

• Marking Practices: As prescribed by BIS under Clause 3.1, ensuring traceability and specification clarity.

• Dimensional Data: Laying lengths Z and Z1 for sizes 20 mm to 160 mm with specified tolerance limits.

• Note: ISO does not recommend larger sizes beyond these limits.

Additional Information

• The standard also encompasses other fittings including elbows, sockets, unions, and caps.
• Dimensional illustrations can be referenced in the code’s Fig. 1.

graph TD
    A[IS 7834 Part 5] --> B[Material & Manufacturing as per Part 1]
    B --> C[Marking & Dimensional Compliance]

Manufacturing Guidelines in IS 7834 Part 5 for 45° Tee Fittings

• Production processes are to comply with IS 7834 Part 1, ensuring injection moulded PVC fittings meet quality standards.

• Markings must be applied as per BIS requirements in Clause 3.1.

• Laying lengths for 45° tees (Z and Z1) are detailed with strict tolerances to maintain joint integrity.

Note: ISO advises against the use of 45° elbows exceeding 160 mm.

Key Points

• Injection moulding must ensure dimensional accuracy for solvent cement joint compatibility.
• Quality control hinges on adherence to specified tolerances.

graph LR
    A[Pipe] --> B[45° Tee]
    B --> C[Dimensional Compliance]

IS 7834 Part 5 (1987): Key Illustration of 45° Tee Geometry

• Fig. 1 (Clause 2.2.1) provides a schematic representation of the 45° tee fitting.

• Detailed dimensions and tolerances are specified in Clause 2.2.2, including laying lengths Z and socket lengths Z1.

• Socket inside diameter and length must comply with IS 7834 Part 1.

• Marking must include manufacturer identification, fitting size, and pressure class.

flowchart TB
    A[Main Pipeline] -->|Laying Length Z| B[Branch Socket]
    B -->|Socket Length Z1| C[Socket End]

Dimensional Specifications and Tolerance Limits for 45° Tee Fittings as per IS 7834 Part 5 (1987)

• The laying lengths Z and Z1 for 45° tees are provided with defined tolerance ranges to ensure proper fit and function.

• Socket dimensions (inside diameter and length) must conform with IS 7834 Part 1.

• Markings should include manufacturer information, fitting size, and pressure rating class.

• Usage of 45° elbows exceeding 160 mm is not recommended.

graph TD
    A[Main Pipeline] -->|Laying Length Z| B[Branch Socket]
    B -->|Socket Length Z1| C[Socket End]

Specifications for Socket Internal Diameter and Length for 45° Tees (IS 7834 Part 5, 1987)

• Socket inside diameter and length dimensions must strictly adhere to the values established in IS 7834 Part 1.

• The laying length measurements Z and Z1 with tolerances are tabulated below:

• Larger sizes beyond 160 mm for 45° elbows are dissuaded by ISO recommendations.

• Markings on the fittings must contain manufacturer identification, size, and pressure classification.

flowchart LR
    A[45° Tee Socket] --> B[Internal Diameter]
    A --> C[Socket Length]
    B & C --> D[Conformance to IS 7834 Part 1]

Marking Requirements under IS 7834 Part 5 for 45° PVC Tee Socket Fittings

• Each 45° tee must be clearly marked with:

  • Manufacturer’s name or unique identification symbol
  • Nominal size of the fitting
  • Corresponding pressure class indicating working pressure

• The dimensional laying lengths Z and Z1 with tolerances are prescribed in Clause 2.2.2.

• Larger 45° elbows are not advised.

• Socket inside diameters and lengths must comply with Part 1 of IS 7834.

graph TD
    A[Fitting Marking] --> B[Manufacturer Identification]
    A --> C[Fitting Size]
    A --> D[Pressure Class]
    A --> E[Dimensional Compliance]

Standard Marking Requirements for 45° PVC Tee Fittings (IS 7834 Part 5)

• Mandatory markings include:

  • Manufacturer’s name or identification mark
  • Nominal size
  • Pressure rating class (working pressure)

• Dimensional laying length details as specified in Clause 2.2.2:

• Socket inside diameter and length must align with IS 7834 Part 1.

• The standard governs injection moulded PVC fittings with solvent cement joints specifically for water supply applications.

flowchart LR
    A[45° Tee Fitting] --> B{Marking}
    B --> C[Manufacturer Name/ID]
    B --> D[Fitting Size]
    B --> E[Pressure Class]