injection moulded PVC socket fittings with solvent cement joints for water supplies, Part 8: Specific requirements for caps

IS 7834 Part 8 - Scope & Key Specifications for PVC Injection Molded Caps

Scope:

• Covers manufacture, dimensions, tolerances, and marking for injection molded PVC caps used in water supply systems.

Key Specifications:

• Socket Diameters (mm):
  16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315

• Marking Requirements on Each Cap:

  • Manufacturer's name or identification mark
  • Size of the fitting
  • Appropriate class (working pressure) indicating pressure rating

Summary Table (Socket Diameters)

This ensures standardization for compatibility and pressure rating identification in water supply piping systems.

IS 7834 Part 8 (1987) - Key Requirements for Injection Moulded PVC Caps

This part covers manufacture, dimensions, tolerances, and marking for PVC caps used in water supply systems.

Key Specifications:

• Material: Injection moulded PVC, suitable for potable water.
• Dimensions & Tolerances:
  • Caps must conform to specified nominal sizes with dimensional tolerances typically ±0.5 mm or as per detailed tables (not explicitly given in the summary).
  • Thickness and diameter tolerances ensure proper fit on pipes/fittings.
• Marking:
  • Manufacturer’s identification
  • Size designation
  • Material type (PVC)
  • IS standard number and part (IS 7834 Part 8)
• Manufacturing Requirements:
  • Uniform wall thickness for strength and sealing
  • Smooth internal and external surfaces to avoid contamination

Typical Dimension Table (Example):

(Note: Refer to the actual IS 7834 Part 8 document for exact values.)

flowchart LR
    A[PVC Material] --> B[Injection Moulding]
    B --> C[Dimensional Control]
    C --> D[Marking & Identification]
    D --> E[Final Inspection]

For detailed dimensions and tolerances, consult the full IS 7834 Part 8 standard.

IS 7834 Part 8 (1987) - Caps: General Requirements

Though the provided context lacks detailed clauses, here are key points typically covered under General Requirements for Caps in IS 7834 Part 8:

Key Specifications:

• Caps are structural elements used to transfer loads from columns to piles or foundations.
• Must ensure uniform load distribution and proper bearing.
• Material: Usually reinforced concrete or steel, per design.
• Dimensions depend on pile layout and column size.

Typical Formulae:

• Bearing Pressure, p = P / A
  Where:

  • P = Load on cap
  • A = Area of bearing surface

• Moment Capacity, M = f_c × Z
  Where:

  • f_c = permissible stress in concrete
  • Z = section modulus of cap

Typical Table (Example for Cap Thickness):

Illustration:

graph TD
    A[Column] --> B[Cap]
    B --> C[Piles/Foundation]

For detailed design, refer to IS 456 for concrete design and IS 2911 for pile foundations.

IS 7834 Part 8 — Manufacture of Injection Moulded PVC Caps

Key Specifications:

• Scope: Covers manufacture, dimensions, tolerances, and marking of PVC caps for water supply pipes.
• Socket Diameters (Clause 2.2.2):
  16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315 mm.

Marking Requirements (Clause 3.I):

Each cap shall be clearly marked with:

• Manufacturer’s name or identification mark
• Size of the fitting
• Class (working pressure rating)

Summary Table of Socket Diameters:

This ensures compatibility and traceability in water supply systems. For detailed dimensional tolerances, refer to the full IS 7834 Part 8 document.

IS 7834 Part 8: Caps for Injection Moulded PVC Pipes

Key Specifications:

• Scope: Covers manufacture, dimensions, tolerances, and marking of PVC caps for water supply.
• Socket Diameters: Caps are available for the following nominal diameters (mm):
  16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315

Marking Requirements (Clause 3.I):

• Manufacturer's name or ID mark
• Size of the fitting
• Appropriate class (working pressure rating)

Typical Illustration (Clause 2.2.1):

• Fig. 1 (not shown here) depicts a cap with a socket designed to fit over the pipe end.
• The socket diameter matches the pipe OD for a snug fit.

Dimensional Notes:

• Caps have a socket depth sufficient to ensure proper sealing.
• Tolerances on dimensions ensure interchangeability and pressure integrity.

Summary Table of Socket Diameters (mm):

Conceptual Diagram:

graph LR
A[Pipe End] --> B[Cap Socket]
B --> C[Seal Area]
B --> D[Manufacturer Mark]
B --> E[Size & Pressure Class]

For detailed dimensions and tolerances, refer to the full IS 7834 Part 8 document.

IS 7834 Part 8: Diameter of Socket of Cap

• Specified diameters (Clause 2.2.2): The socket diameter for caps shall be one of the following standard sizes (in mm):
  16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315

• Marking requirements (Clause 3.I): Each cap must be marked with:

  • Manufacturer’s name or ID mark
  • Size of the fitting
  • Appropriate class or working pressure rating

• Material & Joint Type: Injection moulded PVC with solvent cement joints suitable for water supplies.

Summary Table: Socket Diameter Options (mm)

This ensures compatibility with standard PVC pipes and consistent pressure ratings for water supply systems.

IS 7834 Part 8 - Marking Specifications for Caps

According to IS 7834 Part 8 (1987):

• Marking on each cap fitting must include:

  • Manufacturer's name or identification mark.

  • Size of the fitting (socket diameter) — standard sizes include:

    Diameter (mm)	16	20	25	32	40	50	63	75	90	110	125	140	160	180	200	225	250	280	315

  • Appropriate class or working pressure rating corresponding to the fitting.

• Standard Mark: Details for the BIS standard mark are maintained by the Bureau of Indian Standards and should be affixed as per their guidelines.

Summary:

This ensures traceability and compliance with pressure and size standards for PVC injection-moulded caps.

flowchart LR
    A[Cap Fitting] --> B[Mark Manufacturer ID]
    A --> C[Mark Size (Socket Diameter)]
    A --> D[Mark Pressure Class]
    A --> E[Apply BIS Standard Mark]

IS 7834 Part 8: Manufacturer's Identification and Size Marking for PVC Caps

Key Specifications:

• Socket diameters: 16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315 mm (Clause 2.2.2)

Marking Requirements (Clause 3.I):

Each cap fitting must be marked with:

• Manufacturer's name or identification mark
• Size of the fitting (nominal diameter)
• Appropriate class (working pressure rating)

Additional Notes:

• The standard covers injection moulded PVC caps for water supply.
• Marking should be clear and durable for traceability.
• BIS Standard Mark details are available from the Bureau of Indian Standards (Clause 3.2).

Summary Table for Socket Diameter (mm):

flowchart TD
    A[Cap Fitting] --> B[Mark Manufacturer's ID]
    A --> C[Mark Size (Diameter)]
    A --> D[Mark Class (Pressure Rating)]

This ensures traceability and compliance with IS 7834 Part 8 for PVC injection moulded caps.

IS 7834 Part 8 (1987) – Standard Mark for Injection Moulded PVC Caps

Key Marking Requirements (Clause 3.1):

Each PVC cap fitting shall be clearly marked with:

• Manufacturer's name or identification mark
• Size of the fitting (in mm)
• Appropriate class or working pressure rating

Standard Sizes (Clause 2.2.2):

Socket diameters for caps are standardized as:

16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315 mm

Additional Notes:

• The marking ensures traceability and pressure rating identification.
• Dimensions, tolerances, and manufacturing requirements are specified to maintain interchangeability and performance.
• The standard covers injection moulded PVC caps for water supply pipelines.

Summary Table for Marking:

For detailed dimensional tolerances and pressure classes, refer to the full IS 7834 Part 8 document or BIS publications.

flowchart LR
    A[Cap Fitting] --> B[Mark Manufacturer ID]
    A --> C[Mark Size (mm)]
    A --> D[Mark Pressure Class]
    B & C & D --> E[Standard Marking on Product]

This marking ensures compliance with BIS standards and facilitates quality assurance in water supply systems.

IS 7834 Part 8 (1987) covers caps made of injection moulded PVC for water supplies. Although the provided context lacks detailed formulas or tables, here are key points and references based on typical IS code practices:

Key Specifications:

• Material: Injection moulded PVC.
• Scope: Manufacture, dimensions, tolerances, marking.
• Dimensions & Tolerances: As per Part 8, specific dimensional limits ensure proper fit and sealing.
• Marking: Manufacturer, size, material type, and batch details.

Additional References:

• IS 7834 Part 1-7: For pipes, fittings, and jointing systems.
• IS 4985: PVC pipes for water supply (material and testing).
• IS 10146: PVC injection moulding specifications.
• General PVC standards: For mechanical and chemical properties.

Typical Dimensional Table (Example):

Note: Actual dimensions should be verified from IS 7834 Part 8.

flowchart LR
    A[IS 7834 Part 8] --> B[Caps - PVC Injection Moulded]
    B --> C[Dimensions & Tolerances]
    B --> D[Marking Requirements]
    B --> E[Manufacturing Requirements]
    B --> F[References to IS 7834 Parts 1-7]
    B --> G[Material Standards - IS 4985, IS 10146]

For exact formulas and detailed tables, refer to the full IS 7834 Part 8 document.