Specification for Delivery Breechings, Dividing And Collecting Instantaneous Pattern For Fire Fighting Purposes

IS 905 - Scope Summary

• Scope: Covers general shapes, principal dimensions, and materials for water fittings used in fire fighting.
• Key Clauses:
  • 4.2: Shapes and main dimensions per Figures 1 & 2.
  • 3.3: Washers must be rubber per IS 937-1965.
  • Materials: Leaded tin bronze, high tensile brass, naval brass, aluminium alloys, phosphor bronze, stainless steel wire (all per relevant IS specs).
  • Marking (7.1.1): Breechings may carry ISI Certification Mark ensuring quality & conformity.

Principal Dimensions:

• Male half coupling as per IS 903, thread per IS 2643 (Part 1).
• Female outlet with twist release lug per IS 5290 Fig. 3.
• Thread length: 12 ±1 mm.

Quality:

• All parts must be well finished, free from burrs, defects, or repairs (Clause 5.1).

Typical Thread Specification (per IS 2643 Part 1)

Material Standards Reference

flowchart LR
    A[Water Fittings Scope] --> B[Dimensions (Fig 1 & 2)]
    A --> C[Materials per IS Specs]
    A --> D[Threads per IS 2643]
    A --> E[Marking - ISI Certification]
    A --> F[Quality - Finish & Defect Free]

For detailed dimensions and drawings, refer to Figures 1, 2, and 3 of IS 905 and related IS codes.

IS 905: Types and Dimensions Summary

• Types Covered: Delivery breechings — Dividing and Collecting types as per Fig. 1 & 2.
• Materials: Washers made of rubber conforming to IS:937-1965.
• Threads: As per G 2_ and G 22 of IS:2643 (Part 1) for 12±1 mm length.
• Couplings: Male half coupling per IS:903 (tail adapted to inlet).
• Female Outlet: Twist release type lug as per Fig. 3 of IS:5290.
• Dimensions: All dimensions in millimeters; follow detailed figures in the standard for exact sizes.
• Marking: Breechings may bear ISI Certification Mark per Clause 7.1.1.

Key Dimension Notes:

Material Specification for Washers:

• Rubber as per IS:937-1965.

flowchart LR
    A[Delivery Breeching] --> B[Dividing Type (Fig. 1)]
    A --> C[Collecting Type (Fig. 2)]
    B --> D[Male Half Coupling (IS:903)]
    C --> D
    D --> E[Threads (IS:2643)]
    A --> F[Female Outlet with Twist Release Lug (IS:5290)]
    A --> G[Rubber Washer (IS:937)]

For precise dimensions, refer to Figures 1 & 2 of IS 905. The standard ensures compatibility and interchangeability in firefighting water fittings.

IS 905 - Materials: Key Specifications & References

1. Material Specifications:

• Rubber Washers: Must conform to IS 937-1965 (Washers for water fittings for fire fighting).
• Copper Alloys:
  • Sand castings: Grade 2 (IS 318-1962) or Grade 3 (IS 304-1961)
  • Die castings: Grade 3 (IS 292-1961)
  • Hot forgings: Grade 1 (IS 291-1977)
• Aluminium Alloy Castings: As per IS 617-1975, Designation 4450 or 4225.
• Other Materials:
  • Leaded tin bronze, high tensile brass, naval brass, phosphor bronze wires, stainless steel wires, aluminium alloys—all as per their respective IS codes (revised versions).

2. Material Types & Dimensions:

• Clause 4.2 refers to general shape and dimensions shown in Fig. 1 and 2 (not provided here).
• Materials must meet mechanical and chemical properties per the relevant IS standards.

Summary Table of Key IS Codes for Materials:

If you need specific mechanical properties or dimensions, please specify the component or material type.

IS 905: General Shape and Principal Dimensions

• Clause 4.2 specifies that the general shape and principal dimensions of each type of fitting are as per Fig. 1 and Fig. 2 of the standard.
• These figures detail dividing breeching and collecting breechings, including:
  • Male half coupling (per IS:903) with tail to suit inlet.
  • Female outlet with twist release type lug (per Fig. 3 of IS:5290).
  • Threads as per G 2½ of IS:2643 (Part 1) for a length of 12 ± 1 mm.
• All dimensions are in millimeters.

Key Specifications:

• Washers must be rubber conforming to IS:937-1965.
• Threads follow IS:2643 (Part 1) for pipe fittings.
• Couplings as per IS:903.
• Twist release lugs as per IS:5290.

Summary Table (Example Dimensions from Fig.1 & 2):

Conceptual Diagram (Simplified):

graph LR
A[Male Half Coupling] --> B[Threaded Section (12mm)]
B --> C[Tail to suit inlet]
D[Female Outlet] --> E[Twist Release Lug]

This ensures compatibility and interchangeability in fire-fighting water fittings per IS 905.

IS 905: Manufacturing and Finish Requirements – Key Points

Clause 5.1: Manufacturing Finish

• 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.
• Ensures durability and safety in service.

Material Specifications (Clause 3.3):

• Washers made of rubber per IS 937-1965.
• Castings and ingots must conform to relevant IS standards:
  • Leaded tin bronze, high tensile brass, naval brass, aluminium alloys, phosphor bronze, stainless steel wire.
• Aluminium alloy castings per IS 617-1975 (Designation 4450 or 4225).

Types and Dimensions (Clause 4.2):

• Shapes and principal dimensions as per Figures 1 & 2 in IS 905.
• Standardized dimensions ensure interchangeability and fit.

Summary Table of Material Standards

flowchart LR
    A[Raw Material] --> B[Casting & Forging]
    B --> C[Finishing]
    C --> D[Inspection]
    D --> E{Defects?}
    E -- No --> F[Approved Part]
    E -- Yes --> G[Reject or Repair]
    G --> F

Note: Repairs like welding are not allowed per Clause 5.1.

This ensures high-quality, durable components conforming to IS 905 standards.

IS 905: Performance Requirements Summary

Key Performance Requirements (Clause 6)

• All parts must have a good finish, free from burrs and sharp edges.
• Castings must be clean, sound, and defect-free (no plugging, welding, or repairs).
• Materials must conform to relevant IS specifications (e.g., rubber washers per IS 937-1965).

Materials Specifications (Relevant to Performance)

General Dimensions & Shape

• Refer to Figures 1 & 2 in the standard for principal dimensions and shapes (Clause 4.2).

Summary Table: Performance Checks

flowchart TD
    A[Start: Material Selection] --> B[Check IS Specifications]
    B --> C[Manufacture Parts]
    C --> D[Inspect Surface Finish]
    D -- Good Finish --> E[Check Casting Quality]
    D -- Defects --> F[Reject or Rework]
    E -- Sound & Defect-Free --> G[Verify Dimensions]
    E -- Defective --> F
    G --> H[Performance Requirements Met]

This ensures compliance with IS 905 performance criteria.

IS 905 - Marking of Breechings (Clause 7.1 & 7.1.1)

Key Marking Requirements:

Each breeching must be clearly and permanently marked with:

• Manufacturer's name or trade-mark
• Type of breeching
• Year of manufacture

Additionally, the breeching may bear the ISI Certification Mark as per Clause 7.1.1, which assures compliance with the standard and quality control under ISI supervision.

Threads & Couplings Specifications:

• Threads: As per G 2 of IS:2643 (Part 1) for length 12 ±1 mm
• Female outlet: Twist release type lug as per Fig. 3 of IS:5290
• Male half coupling: As per IS:903 (tail to suit inlet)

Important Notes:

• ISI Mark usage is governed by the Indian Standards Institution (Certification Marks) Act.
• Marking ensures traceability and quality assurance.
• Dimensions and shapes are detailed in Fig. 1 and Fig. 2 of IS 905.

Summary Table:

flowchart TD
    A[Breeching] --> B[Mark Manufacturer Name]
    A --> C[Mark Breeching Type]
    A --> D[Mark Year of Manufacture]
    A --> E[ISI Certification Mark (optional)]
    B --> F[Traceability]
    C --> F
    D --> F
    E --> G[Quality Assurance]

This marking ensures compliance, traceability, and quality verification for fire-fighting water fittings.

IS 905: Testing Procedures - Key Points

1. General Requirements (Clause 5.1):

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

2. Material Specifications:

   • Washers must conform to IS 937-1965 (rubber).
   • Castings and ingots must meet relevant IS specifications for materials like leaded tin bronze, brass, naval brass, aluminium alloys, phosphor bronze, and stainless steel wire.

3. Dimensional Checks (Clause 4.2):

   • Shapes and principal dimensions must follow figures in the standard (Fig. 1 & 2).
   • Threads conform to IS 2643 (Part I) with specified lengths (12±1 mm).

4. Marking (Clause 7.1.1):

   • Products may carry the ISI Certification Mark, ensuring compliance with inspection and quality control.

Summary Table: Key Testing & Inspection Checks

Typical Testing Flowchart (Mermaid.js)

flowchart TD
    A[Start: Receive Parts] --> B[Visual Inspection]
    B -->|Pass| C[Dimensional Check]
    B -->|Fail| D[Reject/Repair]
    C -->|Pass| E[Material Verification]
    C -->|Fail| D
    E -->|Pass| F[Marking & Certification]
    E -->|Fail| D
    F --> G[Dispatch]
    D --> H[Rework or Scrap]

This ensures all parts meet IS 905 quality and performance standards before use.

IS 905: Compatibility with Fire Fighting Equipment – Key Specifications

• Fittings Compatibility:

  • Dividing Breeching: Male fitting on inlet side; female fittings on two outlets.
  • Collecting Breeching: Female fitting on outlet side; male fittings on two inlets. (Clause 2.1)

• Thread Specifications:

  • Threads as per G 2 of IS:2643 (Part 1) for length 12±1 mm.
  • Female outlet with twist release lug as per Fig. 3 of IS:5290.
  • Male half coupling as per IS:903 (tail to suit inlet).

• Marking:

  • Breechings may carry the ISI Certification Mark ensuring compliance with IS 905 and quality control (Clause 7.1.1).

• Standardization Purpose:

  • Ensures interchangeability and compatibility with other fire fighting equipment (Clause 0.3).

Summary Table of Key Dimensions

Notes on Units (SI Units per IS 905)

flowchart LR
    A[Dividing Breeching] -->|Inlet| B(Male Fitting)
    A -->|Outlets| C(Female Fittings x 2)
    D[Collecting Breeching] -->|Inlets| E(Male Fittings x 2)
    D -->|Outlet| F(Female Fitting)

This ensures seamless connection with standard fire fighting hoses and couplings, maintaining system integrity and operational safety.

IS 905: Certification & Quality Control - Key Points

Certification:

• ISI Mark usage is governed by the Indian Standards Institution (Certification Marks) Act.
• ISI Mark ensures compliance with IS 905 under a strict system of inspection, testing, and quality control.
• Continuous ISI surveillance ensures product conformity.
• Manufacturer must obtain ISI license to use the ISI Mark.

Quality Control Specifications:

• Clause 5.1: 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.
• Washers must conform to IS 937-1965 (rubber specification).
• Materials must adhere to relevant IS specifications for metals (e.g., leaded tin bronze, brass, stainless steel).

Marking:

• Breechings may be marked with ISI Certification Mark (Clause 7.1.1).
• Marking ensures traceability and quality assurance.

Summary Table: Quality Control Checks

flowchart LR
    A[Manufacturing] --> B[Inspection & Testing]
    B --> C{Quality Control Checks}
    C --> D[Surface Finish]
    C --> E[Casting Integrity]
    C --> F[Material Compliance]
    C --> G[Marking & Certification]
    G --> H[ISI Mark License]
    H --> I[Continuous Surveillance]

Note: For detailed dimensions and threading, refer to IS 2643 and IS 903 as cited in IS 905.