vitreous sanitary appliances (vitreous china): Part 14 Specific requirements of integrated squatting pans

Scope of IS 2556 Part 14: Integrated Vitreous Squatting Pans

This standard specifies requirements for patterns, dimensions, tolerances, construction, finish, tests, inspection, and marking for integrated vitreous squatting pans.

Key Specifications:

• Functional Dimensions (Table 1, Fig. 1):

  Parameter	Symbol	Value (mm)
  Length	L	500
  Overall length, Max	L1	730
  Length of opening	L2	430
  Width of opening (small end)	W1	150
  Width of opening (wide end)	W2	230
  Height	h1	320 ± 10
  Slope of bottom of pan	z	100 ± 3°
  Depth of water seal, Min	T	50

• Connecting Dimensions (Table 2):

  Parameter	Symbol	Value (mm)
  Depth of flush inlet socket	a	≥ 25
  Distance from flush inlet socket end to outlet	b	≥ 70
  Internal dia. of outlet	d1	≥ 80
  External dia. of outlet	d2	102 ± 5
  Internal dia. of flush inlet socket	d3	50 ± 3
  Length of serrated part of outlet	m	≥ 40
  Centre of outlet height from bottom	h'	140
  Outlet angle with vertical	e1	104°

• Two-Piece Bend Dimensions (Table 3, Fig. 3):

  Parameter	Symbol	Value (mm)
  Internal dia. of outlet	d1	≥ 80
  External dia. of outlet	d2	102 ± 5
  Internal dia. of inlet socket	d5	115
  Depth of inlet socket	f	≥ 40
  Height of bend	h	207

Additional Notes:

IS 2556 Part 14 - Key References, Dimensions & Specifications

1. Functional Dimensions (Table 1, Clause 5.1)

2. Connecting Dimensions (Table 2, Clause 5.1)

3. Two-Piece Bend Dimensions (Table 3, Clause 6.3)

IS 2556 Part 14 — Terminology & Key Specifications for Integrated Squatting Pans

Functional Dimensions (Table 1, Clause 5.1)

Connecting Dimensions (Table 2, Clause 5.1)

Two-Piece Bend Dimensions (Table 3, Clause 6.3)

Notes:

• Ovality is permissible within specified tolerances for diam

IS 2556 Part 14 — Patterns and Sizes: Key Dimensions & Specifications

1. Functional Dimensions (Table 1, Fig. 1)

2. Connecting Dimensions (Table 2, Fig. 1)

3. Two-Piece Bend Dimensions (Table 3, Fig. 3)

IS 2556 Part 14: Dimensions and Tolerances for Squatting Pan (Long Pattern 500)

Key Functional Dimensions (Table 1, Clause 5.1)

Two-Piece Bend Dimensions (Table 3, Clause 6.3)

• Ovality is permissible within the allowed dimensions for internal and external diameters.
• Minimum depth of water seal must not be less than 50 mm (Clause 4.2).
• For unspecified tolerances, refer to Clause 8 of IS 2556 (Part 1):1994.

Notes:

• Dimensions are in millimeters.
• Functional dimensions ensure proper fitting and operation.
• Tolerances ensure manufacturing consistency.
• Water seal depth is critical for odor prevention.

flowchart LR
    A[Squatting Pan] --> B[Functional Dimensions]
    B --> C[Length (L) = 500 mm]
    B --> D[Height (h1) = 320 ± 10 mm]
    B --> E[Slope (z) = 100° ± 3°]
    B --> F[Water Seal Depth (T) ≥ 50 mm]
    A --> G

IS 2556 Part 14: Key Construction Dimensions & Specifications for Integrated Squatting Pans

1. Functional Dimensions (Table 1, Clause 5.1)

2. Connecting Dimensions (Table 2, Clause 5.1)

3. Two-Piece 'S' Trap Bend Dimensions (Table 3, Clause 6.3)

4. Additional Specifications

IS 2556 Part 14: Surface Finish and Glazing Key Points

1. Surface Finish (Clause 1.18):

• Interior surface of the pan up to 40 mm below flushing rim must be smudged with quartz powder (contrasting color) passing through a 1.18 mm IS sieve.
• After flushing, no smudge should remain, ensuring smooth, defect-free glaze.

2. Glazing Requirements:

• Follow general glazing requirements as per IS 2556 (Part 1):1994, including:
  • No visible defects (cracks, blisters).
  • Minimum thickness and uniformity of glaze.
  • Proper adhesion and smooth finish for hygiene and durability.

Key Dimensions for Integrated Squatting Pan (Table 1, Clause 5.1)

Notes on Testing (Clause 6.3 & Toilet Paper Test)

• Toilet paper test ensures pan flushes waste effectively:
  • Paper size: ~150 mm x 115 mm, thickness 0.05 mm.
  • Pan must discharge full charge at least 3 out of 4 flushes.

Summary Diagram: Surface Finish & Glazing Test

flowchart TD
    A[Apply Quartz Powder] --> B[Flush Pan]
    B --> C{Smudge Remaining?}
    C -- No --> D[Pass Surface Finish Test]
    C -- Yes --> E[Fail - Rework Required]

References:

• IS 2556 (Part 1):1994 - General glazing and finish requirements
• IS 2556 (Part 14

IS 2556 Part 14: Performance Tests Key Points

1. Toilet Paper Test (Clause 8.2)

• Test Procedure:
  • Fill pan to nominal water seal level.
  • Flush six pieces of toilet paper (usual type or polyethylene sheet, 0.05 mm thick, ~150 mm x 115 mm, loosely crumpled).
  • Repeat flushing 4 times.
  • Pan must discharge full charge at least 3 out of 4 times.

2. Dimensions for Two-Piece Bend (Clause 6.3, Table 3)

• Ovality allowed within specified tolerances.

3. Functional Dimensions of Pan (Clause 5.1, Table 1)

4. Connecting Dimensions (Clause 5.1, Table 2)

IS 2556 Part 14: Sampling, Process Inspection & Lot Inspection

1. Sampling & Inspection Method

• Refer IS 9140:1995 for detailed procedures on:
  • Sampling plan
  • Process inspection
  • Lot inspection

2. Key Specifications for Pan (Table 1 - Functional Dimensions)

3. Ball for Flushing Test (Clause 1.075)

• Material: Non-absorbent
• Relative density: 1.075 to 1.080
• Diameter: 43 ± 0.5 mm
• Procedure: Place ball in pan, flush normally to check discharge.

4. Toilet Paper Test (Clause 6.3)

• Use usual toilet paper or polyethylene sheet (0.05 mm thick, approx. 150x115 mm, loosely crumpled).
• Flush 4 times; at least 3 flushes must fully discharge the paper.

5. Two Piece Bend Dimensions (Table 3)

flowchart TD
    A[Sampling] --> B[Process Inspection]
    B --> C[Lot Inspection]
    C --> D[IS 9140:199

IS 2556 Part 14: Marking and Certification Key Points

Clause 10.2 BIS Certification Marking:

• Use of Standard Mark is governed by the Bureau of Indian Standards Act, 1986.
• License for the use of the Standard Mark is granted under specific conditions by BIS.
• Each piece of sanitary appliance (e.g., squatting pan) may be marked with the Standard Mark (Clause 10.2.1).

Summary Table: BIS Certification Marking Conditions (Clause 10.2.2)

Important Notes:

• The Standard Mark certifies compliance with IS 2556 Part 14.
• Marking ensures traceability and quality assurance.
• For licensing details, manufacturers must contact BIS directly.

flowchart LR
    A[Manufacturer] --> B[Apply for BIS License]
    B --> C[Compliance Verification]
    C --> D{License Granted?}
    D -->|Yes| E[Use BIS Standard Mark on Product]
    D -->|No| F[No Marking Allowed]

This marking system assures users of product quality and adherence to Indian standards.

IS 2556 Part 14: Committee Composition & Key Specifications

Committee Composition (Annex A):

• Chairman: Shri S. Prakash (Delhi Water Supply & Sewage Disposal Undertaking)
• Members: Representatives from Public Health Engineering, Industry (e.g., E.I.D. Parry, Kirloskar Brothers), Research Institutes (CSIR), Defence, Municipal Corporations, BIS, and others.
• Subcommittee on Domestic Sanitary Appliances: Convened by Shri R.K. Somany with members from ceramics, water boards, research institutes.

Key Tables & Specifications:

Functional Dimensions of Integrated Squatting Pan (Table 1, Clause 5.1)

Two Piece Bend Dimensions (Table 3, Clause 6.3)

Additional Notes:

• The Standard Mark use is governed by BIS Act 1986 (Clause 10.2.2).
• Testing includes flushing with toilet paper or polyethylene sheet to ensure discharge efficiency (Clause 6.3).
• General requirements follow IS 2556 Part 1: 1994 for vitreous china sanitary appliances.

graph TD
A[IS 2556 Part 14]