Specification for landing valves

IS 5290: Scope - Key Points & Specifications

• Scope: Defines shapes and dimensions of valve types (see Fig. 1 to 4 in the standard).
• Material Specifications:
  • Tooth seat valve: Forged brass, Grade FLB as per IS 6912:1985 or IS 291:1989 (Naval brass rods).
  • Blank cap: Made of ABS plastics.
• Rounding Off: Final test or analysis values must be rounded per IS 2:1960 rules, retaining the same significant figures as specified.
• Referenced Standards (Annex A):
  • IS 291:1989 – Naval brass rods and sections.
  • IS 3444:1987 – Corrosion-resistant alloy steel & nickel base castings.

Summary Table: Material for Valve Components

Rounding Rule (IS 2:1960)

• Round off final values to the same number of significant digits as the specified value.
• Example: If specified value = 12.3 (3 significant digits), round test results to 3 significant digits.

flowchart LR
    A[Valve Type] --> B[Shape & Dimensions (Fig 1-4)]
    B --> C[Material Specs]
    C --> D[Tooth Seat Valve: Forged Brass (IS 6912/IS 291)]
    C --> E[Blank Cap: ABS Plastic]
    F[Testing & Analysis] --> G[Rounding per IS 2:1960]
    H[Referenced IS Codes] --> C

This concise scope ensures correct material and dimensional conformity for valves under IS 5290.

IS 5290 Key References and Specifications

• Shape & Dimensions:
  Refer to Figures 1 to 4 in Clause 5.2 for detailed shapes and dimensions of various types covered.

• Rounding Off:
  Follow IS 2:1960 for rounding numerical results—retain the same significant figures as specified.

• Threads:
  Use G3 threads as per IS 2643 (Part I) - 1975 for threaded components.

• Annex A:
  Contains a list of Indian Standards that complement IS 5290, essential for complete compliance.

Summary Table

flowchart LR
    A[IS 5290 Standard] --> B[Clause 5.2: Shapes & Dimensions (Fig.1-4)]
    A --> C[Annex A: Related Indian Standards]
    A --> D[IS 2:1960 Rounding Rules]
    A --> E[IS 2643: G3 Threads]

This ensures compliance with dimensional, threading, and calculation accuracy requirements under IS 5290.

IS 5290 - Terminology & Key Specifications

• Shape & Dimensions:
  Defined in Figures 1 to 4 (Clause 5.2). These figures specify the geometric profiles for each type covered by the standard.

• Rounding Off Values:
  Follow IS 2:1960 for rounding test/analysis results:

  • Retain the same number of significant digits as the specified value.
  • Ensures consistency and accuracy in reporting.

• Thread Specifications:
  Threads are per IS 2643 (Part I) - 1975, specifically G3 threads.

Summary Table

If you need geometric details or thread profiles, refer to the respective figures and IS 2643 for exact dimensions and thread forms.

IS 5290: Materials Specifications Summary

• Tooth, seat valve material:
  Forged brass conforming to Grade FLB of IS 6912:1985 or IS 291:1989 (Naval brass rods and sections).

• Blank cap material:
  ABS plastic.

• Corrosion-resistant castings:
  Alloy steel and nickel base castings per IS 3444:1987, specifically Grade 1 and 4.

• Packing threads:
  As per G 1% threads of IS 2643 (Pt I) - 1975.

Relevant IS Codes for Materials:

Summary Diagram of Material Selection Flow:

flowchart TD
    A[Valve Component] --> B[Tooth, Seat Valve]
    A --> C[Blank Cap]
    B --> D[Forged Brass (IS 6912 / IS 291)]
    C --> E[ABS Plastic]
    A --> F[Packing Threads]
    F --> G[G 1% Thread (IS 2643)]
    A --> H[Corrosion Resistant Castings]
    H --> I[Alloy Steel/Nickel Base (IS 3444 Grades 1 & 4)]

This ensures compliance with IS 5290 materials requirements for durability and corrosion resistance.

IS 5290: Types and Dimensions of Springs

• Clause 5.2 specifies the shapes and dimensions of springs, detailed in Figures 1 to 4 (not provided here).
• All dimensions are in millimeters (mm).

Key Specifications:

• Wire Material:
  • Phosphor bronze wire per IS 7608:1987 for copper alloy valves.
  • Stainless steel wire per IS 6528:1972 for aluminium, zinc alloy, and stainless steel valves.

Typical Dimensions (example from IS 5290 for common spring types):

Refer to Figures 1-4 in IS 5290 for exact geometry and dimensions.

Material Standards Summary:

flowchart LR
    A[Spring Types] --> B[Compression Springs]
    A --> C[Tension Springs]
    B --> D[Phosphor Bronze Wire]
    C --> E[Stainless Steel Wire]
    D --> F[IS 7608:1987]
    E --> G[IS 6528:1972]

For precise design, always consult Figures 1-4 of IS 5290 and material specs.

IS 5290: Manufacturing and Finish Key Points

• Finish Quality (Clause 6.1):

  • All parts must have a good finish, free from burrs and sharp edges.
  • Castings must be clean, sound, and free from plugging, welding, or repairs.

• Shape & Dimensions (Clause 5.2):

  • Refer to Figures 1 to 4 for detailed shapes and dimensions of each type (not provided here).
  • These figures define standard profiles critical for manufacturing compliance.

• Rounding Off (General Clause):

  • Apply IS 2:1960 for rounding test or analysis results.
  • Retain the same significant figures as specified in the standard.

• Packing Threads:

  • Threads should conform to G 1% of IS: 2643 (Pt I) - 1975.

Summary Table for Finish & Manufacturing

flowchart TD
    A[Raw Material] --> B[Manufacturing]
    B --> C[Surface Finishing]
    C --> D{Quality Check}
    D -->|No burrs, smooth edges| E[Casting Inspection]
    E -->|Clean & sound| F[Dimension Check (Fig 1-4)]
    F --> G[Thread Check (IS 2643)]
    G --> H[Final Product]

This ensures compliance with IS 5290 manufacturing and finish requirements.

IS 5290: Performance Requirements and Tests Summary

1. Hydrostatic Pressure Test (Clause 7.2)

• Test Pressure: 2.1 MN/m² (21 kgf/cm²)
• Condition: Valve open, outlet closed
• Duration: 2½ minutes
• Acceptance: No leakage through valve body or spindle gland
• Note: Initial water drops allowed until rubber sealing is proper

2. Dimensional Tolerances

• Tolerance: ±0.5 mm (where not specified)
• Units: All dimensions in millimeters

3. Rounding Off (General)

• Follow IS 2:1960 for rounding numerical values.
• Retain significant figures equal to those in the specified values.

Key Points:

Diagram: Hydrostatic Pressure Test Setup

flowchart LR
    A[Water Source] --> B[Valve (Open)]
    B --> C[Valve Body]
    C --> D[Outlet (Closed)]
    style B fill:#f9f,stroke:#333,stroke-width:2px
    style D fill:#f96,stroke:#333,stroke-width:2px

This ensures the valve integrity under pressure without leakage.

IS 5290 - Marking Specifications Summary

Marking Requirements:

• BIS Certification Mark:
  As per Clause 8.1.1, valve assemblies may bear the BIS Standard Mark to indicate conformity.

• Rounding Off:
  Final test values must be rounded off according to IS 2:1960 rules, retaining the same significant digits as specified.

• Packing Threads:
  Packing threads should comply with G 1% of IS: 2643 (Part 1) - 1975 (Dimensions for pipe threads for fastening purposes).

Key References for Marking:

Important Notes:

• Marking must be clear, durable, and legible.
• Include manufacturer identification, batch number, and BIS mark if applicable.
• Use colors as per IS 5:1978 for paint/enamel marking.
• Thread dimensions and profiles must follow IS 2643 for compatibility.

Example: Rounding Off Rule (IS 2:1960)

flowchart LR
    A[Valve Assembly] --> B{Marking Required?}
    B -- Yes --> C[BIS Certification Mark]
    B -- No --> D[Manufacturer Mark]
    C --> E[Apply IS 5 Color Code]
    D --> E
    E --> F[Apply Thread Dimensions as per IS 2643]
    F --> G[Final Inspection & Rounding as per IS 2]

For detailed thread profiles and dimensions, refer to IS 2643 (Part 1): 1975.

IS 5290 Annex A: List of Referenced Indian Standards

This standard references various IS codes essential for materials, dimensions, and specifications related to fire fighting valves and components. Key referenced IS codes include:

Important Notes:

• Threads G3 conform to IS 2643 (Part 1) - 1975, specifying pipe thread dimensions for fastening.
• BIS Certification Marking (Clause 8.1.1) applies to valve assemblies.
• These referenced standards cover materials, dimensions, and quality requirements for components used in fire fighting systems.

Example: Pipe Thread Dimensions (IS 2643 Part 1)

IS 5290 - Committee Composition Summary

The committee responsible for IS 5290 is the Fire Fighting Sectional Committee, CED 22. The detailed composition is provided in Annex B of the standard.

Key Details:

• Chairman: Fire Adviser, Ministry of Home Affairs
• Members: Representatives from ministries (Home Affairs, Railways, Defence), government departments (Municipal Corporations, Urban Development), research institutes (CSIR, BARC), industry experts, and manufacturers.
• Ex-officio Member: Director General, BIS
• Secretary: Director (Giv Engg), Ministry of Home Affairs

Purpose:

• To prepare and revise standards related to fire fighting equipment and practices.
• Includes technical experts, government officials, and industry representatives to ensure comprehensive coverage.

Table: Sample Committee Composition Extract

This composition ensures multi-disciplinary input for robust fire fighting standards.

graph TD
    A[Fire Adviser, Ministry of Home Affairs] --> B[Committee Chairman]
    B --> C[Members from Govt. Ministries]
    B --> D[Industry Experts]
    B --> E[Research Institutes]
    B --> F[BIS Director General (Ex-officio)]
    C --> G[Railways, Defence, Urban Development]
    D --> H[Manufacturers, Consultants]
    E --> I[CSIR, BARC]

For detailed member list and roles, refer to Annex B of IS 5290.