cast copper alloy traps: Part 1 'P' and 'S' traps

IS 5219 Part 1: Scope & Key Specifications for Traps

The standard covers design and construction of 'P' and 'S' traps with either externally screwed or plain outlets. Key dimensional parameters are specified in Tables 1 & 2 (Clause 6.7, 7.1).

Key Dimensions (All in mm)

Notes:

• Water seal minimum varies by trap type (35 mm or 75 mm).
• Outlet threads conform to IS 2643 (parallel pipe threads).
• Dimensions ensure proper trap function and fitment in plumbing systems.

flowchart LR
    A[Internal Diameter (A)]
    B[Water Seal (B)]
    C[Height Over Collar (C)]
    D[Length of Outlet (D)]
    E[Centre Inlet to Outlet (E)]
    K[Internal Thread on Inlet (K)]

    A --> Trap
    B --> Trap
    C --> Trap
    D --> Trap
    E --> Trap
    K --> Trap

    subgraph Trap Dimensions
        Trap
    end

Use these tables for design, manufacturing, and inspection of traps per IS 5219 Part 1.

IS 5219 Part 1: Key Definitions & Dimensions for Traps

Definitions (Clause 2.0)

• Standardizes terms related to plumbing traps.
• Applies to 'P' and 'S' traps with specified dimensions and construction.

Trap Dimensions (Clause 6.7 & 7.1)

For Plain Outlet Traps (Table 2)

• Similar parameters but with plain outlet lengths (D) ranging 50-60 mm.
• Height over collar max varies from 15 to 45 mm.
• Centre inlet to outlet ranges from 95 to 170 mm.

Summary:

• Water Seal Depth (B): Minimum 35 mm (shallow) or 75 mm (deep).
• Internal Diameter (A): Matches nominal pipe size (30, 38, 48 mm).
• Threading:

IS 5219 Part 1: Nominal Sizes - Key Tables & Specifications

1. Coupling Nut & Blank Nut Dimensions (Clause 6.6)

2. 'P' and 'S' Trap Dimensions with Externally Screwed Outlet (Clause 6.7)

3. Straight Tail Pipes (Clause 6.4)

| Nominal Size (mm) | Bore Min

IS 5219 Part 1: Key Material Specifications & Dimensions

1. Materials (Clause 1.2)

• Pressings: Forgeable brass with composition:

  Element	Min %	Max %
  Copper	56.5	60.0
  Lead	1.0	2.5
  Zinc	Remainder	-

• Impurities: ≤ 0.75% total

• Reference Material: Brass Grade 3 per IS:292-1961 (Clause 4.1.1)

2. Coupling Nut & Blank Nut Dimensions (Clause 6.6)

3. Straight Tail Pipes Dimensions (Clause 6.4)

IS 5219 Part 1: Workmanship and Finish Summary

1. Workmanship (Clause 5.2)

• External surfaces of traps and components must have one of the following finishes:
  • Self-colour: Clean, free from grease and tool marks.
  • Polished finish.
  • Nickel or chromium plated finish.

2. Washers (Clause 4.3)

• Washers supplied should be:
  • Compressed fibre, Grade C as per IS 2712-1965, or
  • Suitable rubber material.

3. Coupling Nut & Blank Nut Dimensions (Clause 6.6 & 7.1)

Notes:

• Threads conform to IS 2643-1964 for fastening.
• Minimum dimensions ensure proper fit and sealing.
• Surface finish affects corrosion resistance and aesthetics.

flowchart TD
    A[Traps & Components] --> B{Surface Finish}
    B -->|Self-colour| C[Clean, no grease/tool marks]
    B -->|Polished| D[Shiny surface]
    B -->|Nickel/Chromium plated| E[Corrosion resistant]

    F[Washers] --> G[Compressed fibre Grade C (IS 2712)]
    F --> H[Suitable rubber material]

    I[Coupling Nut Dimensions] --> J[Nominal Size]
    J --> K[Internal Thread (IS

IS 5219 Part 1 (1969) — Design and Construction Key Specifications

1. Coupling Nut & Blank Nut Dimensions (Clause 6.6)

2. Straight Tail Pipes Dimensions (Clause 6.4)

IS 5219 Part 1 - Key Dimensions for Traps

1. Dimensions of 'P' and 'S' Traps with Externally Screwed Outlet (Table 1)

2. Dimensions of 'P' and 'S' Traps with Plain Outlet (Table 2)

IS 5219 Part 1: Associated Components Key Points

Definition (Clause 2.5)

• Associated components include tailpipes, coupling nuts, blank nuts, clean out plugs, removable caps, and washers.

Dimensions (Clause 7.1 & 6.1)

• Components must conform to dimensions in Tables 1 to 8 (not provided here).
• Tables 1 to 8 also show typical trap illustrations (main features only, not limiting design).

Materials (Clause 1.2)

• Pressings for associated components must be forgeable brass with composition:

• Total impurities ≤ 0.75%.

Summary Table (Material Composition)

| Component         | Material         | Composition (wt%)                |
|-------------------|------------------|--------------------------------|
| Associated Components | Forgeable Brass | Cu: 56.5-60.0, Pb: 1.0-2.5, Zn: remainder, impurities ≤0.75% |

Notes:

• Refer to Tables 1-8 in IS 5219 Part 1 for exact dimensions and typical shapes.
• Material quality ensures durability and corrosion resistance for plumbing traps and fittings.

flowchart LR
  A[Trap] --> B[Tailpipe]
  A --> C[Coupling Nut]
  A --> D[Blank Nut]
  A --> E[Clean Out Plug]
  A --> F[Removable Cap]
  A --> G[Washer]

For detailed dimensions, consult IS 5219 Part 1 Tables 1-8 directly.

IS 5219 Part 1 - Inspection and Testing Key Points

1. Inspection Access (Clause 6.7)

• Every trap (per Tables 1 & 2) must have a clean-out at the specified position.
• Clean-out plugs to be fitted as per Table 5.

2. Dimensional Specifications

Table 6: Dimensions of Straight Tail Pipes

Table 7: Dimensions of Bent Tail Pipes for Overflow

IS 5219 Part 1: Marking and Packaging Key Points

Marking (Clause 8.1 & 8.1.1)

• Each trap must be clearly and permanently marked with:
  • Manufacturer's name
  • Trade-mark (if any)
• Optional: ISI Certification Mark may be applied, indicating compliance with ISI quality and inspection standards.

Packaging

• No explicit packaging details in the clauses; however, traps and components must conform to dimensional specifications (Clause 7.1).

Key Dimensional Tables (Clause 6.4 & 7.1)

Bent Tail Pipes for Overflow Connections (Table 7)

| Bore (mm) | Length to Outlet CL (B) | CL Inlet to Outlet (C) | Collar Diameter (D) | Axial Collar Length Min (E) | Axial Spigot Length Min (F) | Spigot Diameter Max (G) | Wall Thickness Min (H) | Tail Diameter Max (I) | Bend Radius Min (K) | Min Straight Tail Length (L) | |-----------|-------------------------|-----------------------|--------------------|-----------------------------|-----------------------------|