Specification for Door Closers (Pneumatically Regulated) for Light Doors Weighing up to 40 kg

IS 6343: Scope - Key Points & Tables

Scope: Specifies materials, manufacture, testing, and performance criteria for pneumatic door closers.

Key Specifications:

• Materials (Clause 3.1, Table 1):

  Component	Suitable Material	IS Standard Reference
  Cylinder	Brass/Mild Steel/Aluminium tube	IS 407, IS 3601, IS 738
  Piston/Rod	Steel, Cast Iron, Aluminium/Zinc alloy	IS 7283, IS 210, IS 617
  Brackets/Fittings	Mild Steel, Cast Iron, Aluminium alloy	IS 226, IS 210, IS 617
  Spring	Steel	IS 2507, IS 4454
  Regulating Screws	Brass, Bronze, Aluminium alloy, Steel	IS 292, IS 28, IS 617

• Testing & Sampling (Clause 13.3.1 & 13.3.2):

  • Sample sizes and acceptance criteria are defined for manufacture, finish, dimensions, general requirements, and performance.
  • Endurance test:
    • For lots ≤ 300: Test 2 door closers
    • For lots > 300: Test 5 door closers
  • All tested must satisfy endurance requirements per Clause 7.2 to accept the lot.

Sampling Table (Summary):

Notes:

• Final test results to be rounded as per IS 2-1960.
• This standard is part of a series on builder's hardware.

flowchart TD
    A[Lot of Door Closers] --> B{Lot Size ≤ 300?}
    B -- Yes --> C[Test 2 door closers for endurance]
    B -- No --> D[Test 5 door closers for endurance]
    C & D --> E{All pass endurance test?}
    E -- Yes --> F[Lot accepted]

IS 6343 - Definitions & Key Specifications Summary

Definitions (General)

• Door Closer: Mechanical device to close a door automatically.
• Lot: Quantity of door closers from a production batch for inspection/testing.
• Defective: Door closer failing any manufacturing, finish, dimension, or performance criteria.

Sampling & Testing (Clause 13.3)

• Sample Size & Acceptance Criteria (Table 2):
  • Sample size determined based on lot size.
  • Acceptance/Rejection numbers define conformity.
• Endurance Test (Clause 13.3.2):
  • For lot ≤ 300: Test 2 door closers.
  • For lot > 300: Test 5 door closers.
  • Door closers must pass endurance per Clause 7.2 to accept the lot.

Materials for Pneumatically Regulated Door Closers (Table 1, Clause 3.1)

Sampling & Acceptance Flow (Simplified)

flowchart TD
  A[Select Sample from Lot] --> B{Defectives ≤ Acceptance Number?}
  B -- Yes --> C[Accept Lot]
  B -- No --> D{Defectives ≥ Rejection Number?}
  D -- Yes --> E[Reject Lot]
  D -- No --> F[Take Second Sample]
  F --> G[Combine Defectives]
  G --> H{Combined Defectives ≤ Acceptance Number?}
  H -- Yes --> C
  H -- No

IS 6343: Materials and Construction for Door Closers (Pneumatically Regulated)

1. Materials for Main Components (Clause 3.1, Table 1)

2. Sampling & Testing (Clause 13.3.1 & 13.3.2)

• Sample Size for Manufacture, Finish, Dimensions, General Requirements & Performance:
  Refer to Table 2 (not fully provided) for acceptance/rejection criteria.

• Endurance Test:

  • For lot size ≤ 300: Test 2 door closers
  • For lot size > 300: Test 5 door closers
  • All tested units must satisfy endurance requirements per Clause 7.2.

Summary Table of Materials

| Component         | Material Options                         | IS Codes (Examples)               |
|-------------------|----------------------------------------|---------------------------------|
| Cylinder          | Brass, Mild Steel, Aluminium Tubes     | IS: 407, 3601, 738              |
| Piston/Rod        | Steel, Cast Iron, Aluminium, Zinc Alloy|

IS 6343: Dimensions and Tolerances for Door Closers

Key points from Clause 5.1:

• Dimensions and tolerances for all door closer components are mutually agreed between purchaser and manufacturer.
• No fixed dimensional tables are specified in the standard itself.
• The closer consists of a cylindrical body (brass, aluminum, or steel) with:
  • Minimum wall thickness: 1 mm
  • One end open for piston servicing
  • Mounted on brackets with holes for at least 4 screws
• Assembly parts like bearing pins and screws must be secured.

Typical Dimensions & Tolerances (Industry Practice)

Quality Control (Clause 13.3.1 & Table 2)

• Sampling and acceptance criteria for dimensions and finish are based on lot size.
• Defective units are checked against acceptance/rejection numbers.
• Endurance testing is mandatory for lot conformity.

Summary Diagram: Door Closer Components and Dimensions

graph LR
A[Cylindrical Body] -->|Wall Thickness ≥1mm| B[Piston Access End]
A --> C[Bracket with ≥4 Screw Holes]
C --> D[Secured Bearing Pins & Screws]

Note: For precise dimensions and tolerances, refer to the purchase agreement or manufacturer's datasheet as per IS 6343 Clause 5.1.

IS 6343: General Requirements - Key Points & Tables

1. Materials for Door Closer Components (Clause 3.1, Table 1)

2. Sampling & Testing (Clause 13.3.1 & 13.3.2)

• Sampling for Manufacture, Finish, Dimensions, General Requirements & Performance:

  • Use Table 2 (not fully provided here) for sample size and acceptance criteria.
  • If defectives ≤ acceptance number → Lot accepted.
  • If defectives ≥ rejection number → Lot rejected.
  • If defectives between acceptance and rejection → Take second sample and combine results.

• Endurance Test (Clause 13.3.2):

  • For lot size ≤ 300, test 2 door closers.
  • For lot size > 300, test 5 door closers.
  • Door closers must have passed initial tests (Clause 13.3.1).
  • All tested must satisfy endurance requirements per Clause 7.2 to accept the lot.

3. Dimensions & Tolerances (Clause 5.1)

• Dimensions and tolerances are agreed upon between purchaser and manufacturer.

Summary Diagram: Sampling & Testing Process

flowchart TD
    A[Start: Lot of Door Closers] --> B[Draw Sample per Table 2]
    B --> C{Defectives ≤ Acceptance Number?}
    C -- Yes

IS 6343: Performance Requirements for Pneumatic Door Closers

Key Points from Clause 7 & 13.3.1:

• Performance Tests: Door closers must be tested for manufacture, finish, dimensions, general requirements, and performance.
• Sampling & Acceptance Criteria:
  • If defective units ≤ acceptance number → Lot accepted.
  • If defective units ≥ rejection number → Lot rejected.
  • If defective units between acceptance and rejection → second sample tested.
  • Combined defectives from both samples determine final acceptance.

Sampling Table (Table 2 Summary):

(Refer IS 6343 Table 2 for exact values based on lot size)

Materials (Clause 3.1 & Table 1):

Summary Diagram of Performance Testing Flow

flowchart TD
    A[Start: Sample Door Closers] --> B{Defectives ≤ Acceptance?}
    B -- Yes --> C[Accept Lot]
    B -- No --> D{Defectives ≥ Rejection?}
    D -- Yes --> E[Reject Lot]
    D -- No --> F[Take Second Sample]
    F --> G[Combine Defectives]
    G --> H{Combined Defectives ≤ Acceptance

IS 6343: Endurance Test for Door Closers

Key Specifications (Clause 7.2)

• Test Setup: Closer fitted to door of maximum permissible weight.
• Operations: 50,000 cycles (1 open + 1 close = 1 operation).
• Speed: 6 to 8 operations per minute.
• Continuous Operations: Minimum 3,000 operations without interruption.
• Acceptance Criteria: No defects, failures, or deterioration after test.

Sampling & Conformity (Clauses 13.3.1 & 13.3.2)

• Endurance Test Samples:
  • Lots ≤ 300: 2 closers
  • Lots > 300: 5 closers
• All tested samples must pass endurance test to accept the lot.

Summary Diagram of Endurance Test Process

flowchart TD
    A[Select door closer] --> B[Fitted to max weight door]
    B --> C[Perform 50,000 operations]
    C --> D{Any defects/failures?}
    D -- No --> E[Pass endurance test]
    D -- Yes --> F[Fail endurance test]

Note: The endurance test ensures durability and reliability under repetitive use as per IS 6343 standards.

IS 6343 - Finishing and Painting: Key Points

• Putty Application (Clause 8.2.3):
  Use putty conforming to IS:110-1968 for filling and smoothing surfaces before painting.

• Painting Procedure (Clause 8.2.4):
  Apply two coats of enamel paint:

  • First coat: Undercoat
  • Second coat: Finish coat (enamel paint)

• Phosphate Treatment:
  Iron and steel surfaces should be phosphate treated for corrosion protection before painting.

• Quality Assurance:
  Door closers and hardware may carry the ISI Certification Mark ensuring compliance with quality and inspection standards (Clause 9.1.1).

Typical Painting Specification Summary

Notes on Paint Thickness & Coverage (General Practice)

flowchart TD
    A[Surface Cleaning] --> B[Phosphate Treatment]
    B --> C[Putty Application (IS:110)]
    C --> D[Primer Coat (Undercoat)]
    D --> E[Two Coats of Enamel Paint]
    E --> F[Finished Surface]

For detailed chemical composition or paint mix, refer to IS specifications for ready mixed paints and primers. Always ensure surface is dry and free of rust before treatment and painting.

IS 6343 - Marking of Door Closers: Key Points

• Clause 9.1.1: Door closers may carry the ISI Certification Mark, indicating compliance with IS standards under ISI's inspection and quality control.

• Use of ISI Mark: Governed by Indian Standards Institution (Certification Marks) Act. It assures:

  • Production per IS requirements.
  • Supervised inspection/testing.
  • Continuous conformity checks by ISI.

• Manufacturer’s Responsibility: Obtain license for ISI Mark use from ISI.

Sampling and Conformity (Clause 13.3.1 & Table 2)

• Sample Size and Acceptance Criteria for manufacture, finish, dimensions, general requirements, and performance:

• If defectives ≤ acceptance number → Lot accepted.

• If defectives ≥ rejection number → Lot rejected.

• If defectives between acceptance and rejection → Take second sample and combine results.

Endurance Test (Clause 13.3.2)

• For lots ≤ 300: Test 2 door closers.

• For lots > 300: Test 5 door closers.

• All tested closers must satisfy endurance requirements per Clause 7.2.

Summary Diagram

flowchart TD
    A[Lot of Door Closers] --> B{Lot Size ≤ 300?}
    B -- Yes --> C[Sample 2 units]
    B -- No --> D[Sample 5 units]
    C & D --> E[Test Manufacture, Finish, Dimensions, Performance]
    E --> F{Defectives ≤ Acceptance?}
    F -- Yes --> G[Lot Accepted]
    F -- No --> H{Defectives ≥ Rejection?}
    H -- Yes --> I[Lot Rejected]
    H -- No --> J[Take Second Sample]
    J --> K[Combine Defectives]
    K --> F

Note: Refer IS 6343 for detailed test procedures and licensing conditions for ISI Mark use.

Packing Specifications (IS 6343 - Clause 10.1):

• Each door closer must be wrapped in craft paper or polyethylene sheet.
• Packed inside cardboard boxes.
• Each box must have a label with:
  • Manufacturer's name or trademark.
  • Quantity in the package.
  • Serial number or batch number.

Key Table: Sample Size and Criterion for Conformity (Table 2)

• Used for checking manufacture, finish, dimensions, general requirements, and performance.
• If defectives ≤ Ac → Lot accepted.
• If defectives ≥ Re → Lot rejected.
• If Ac < defectives < Re → Take second sample and combine results.

Summary Diagram of Packing Process

flowchart TD
    A[Door Closer] --> B[Wrap in Craft Paper or Polyethylene]
    B --> C[Place in Cardboard Box]
    C --> D[Label Box]
    D --> E[Manufacturer Name]
    D --> F[Quantity]
    D --> G[Serial/Batch Number]

This ensures protection, traceability, and quality control during shipment and storage.

IS 6343 - Accessories: Key Specifications & Materials

1. Materials for Door Closer Accessories (Clause 3.1, Table 1)

2. Endurance Test for Accessories (Clause 13.3.2)

• Sample size for endurance test:
  • Lots ≤ 300: Test 2 door closers
  • Lots > 300: Test 5 door closers
• Test per Clause 7.2 (Endurance test procedure)
• Acceptance: All tested closers must satisfy standard requirements for lot acceptance.

3. Packaging Requirements (Clause 10.1)

• Each door closer packed in craft paper or polyethylene sheet inside cardboard box.
• Box label must include:
  • Manufacturer's name/trademark
  • Quantity
  • Serial or batch number

Summary Diagram of Material Flow for Accessories

graph TD
    A[Door Closer Accessories] --> B(Cylinder)
    A --> C(Piston/Piston Rod)
    A --> D(Brackets & Fittings)
    A --> E(Spring)
   

IS 6343 Key Points on Installation of Door Closers

Clause 6.6: Installation Instructions

• Each door closer must come with clear, detailed installation and regulation instructions.
• Ensures proper fitting, adjustment, and functioning.

Materials for Door Closer Components (Clause 3.1, Table 1)

Endurance Test (Clause 13.3.2)

• For lots ≤ 300 units: Test 2 door closers.
• For lots > 300 units: Test 5 door closers.
• Test per Clause 7.2 for endurance.
• All tested units must satisfy requirements for the lot to pass.

Summary Diagram: Installation Process

flowchart TD
    A[Receive Door Closer] --> B[Read Installation Instructions]
    B --> C[Select Suitable Mounting Location]
    C --> D[Fix Brackets and Fittings]
    D --> E[Install Cylinder & Piston]
    E --> F[Adjust Regulating Screws]
    F --> G[Test Door Operation]
    G --> H{Satisfactory?}
    H -- Yes --> I[Complete Installation]
    H -- No --> F

For detailed installation, always refer to the manufacturer's manual alongside IS 6343.

IS 6343 - Sampling and Testing for Conformity (Clause 13.3)

Key Points:

• Sampling Method: Random sampling for manufacture, finish, dimensions, general requirements, and performance tests.
• Testing: All sampled door closers are examined; any defect means the item is defective.
• Decision Criteria:
  • If defectives ≤ Acceptance Number → Lot accepted.
  • If defectives ≥ Rejection Number → Lot rejected.
  • If defectives between acceptance and rejection → Take a second sample of same size.
  • Combine defectives from both samples and decide as per acceptance/rejection numbers.

Table 2: Sample Size & Criteria for Conformity

Guarantee Clause (12.1)

• Each door closer must have a 1-year guarantee against manufacturing defects or failures.
• Manufacturer must repair or replace defective closers free of charge within this period.

flowchart TD
    A[Start: Select Lot