Unplasticized Polyvinyl Chloride (UPVC) injection moulded fittings are widely used in soil and waste discharge systems for inside and outside buildings. These fittings have been designed in such a way that they make sure that the flow of waste takes place smoothly and efficiently in plumbing and drainage systems. They have been made up of high-quality UPVC materials.
To maintain the quality and reliability of these fittings, the Bureau of Indian Standards (BIS) has established guidelines under IS 14735: 1999. This standard outline guideline is about material quality, impact resistance, dimensional accuracy, and overall performance of injection moulded fittings. Manufacturers who comply with this standard are eligible to obtain BIS certification and use the Standard Mark on their products. This ensures the safety of the product and compliance in the Indian market.
What is IS 14735: 1999
This is the Indian Standard for UPVC Injection Moulded Fittings used in Soil and Waste Discharge Systems, which outlines the standard requirements for fittings used in drainage systems to ensure safety and durability. This standard is set by the BIS (Bureau of Indian Standards) to ensure that product quality and safety are met, and the fittings are
- Manufactured using approved unplasticized PVC material
- Verified for impact resistance
- Tested for accurate dimensions and proper fitting
- Assessed for resistance to stress, heat, and chemical exposure
- Designed to ensure leak-proof performance
- Ensured to maintain structural stability
Who is eligible for UPVC Drainage Fittings BIS License
BIS authorisation under IS 14735: 1999 is required for businesses involved in manufacturing, importing, or supplying soil waste drainage fittings in India.
Applicable to:
- Manufacturers (India) - Must get BIS approval if the products are covered under QCO.
- Foreign Manufacturers - Need certification to export rainwater drainage fittings to India.
- Importers/Brand Owners - Must ensure that the products are BIS certified before selling.
- Sellers/Distributors - Should only sell certified ventilation pipe fittings.
Testing and Inspection Requirements
To ensure the quality, safety needs, and adequate performance of UPVC ventilation and drainage system fittings, the standard set by the Bureau of Indian Standards (BIS) defines proper testing and inspection requirements during manufacturing.
Manufacturing & Standards Compliance Tests
- IS 14735 Compliance Verification (R) - Ensures UPVC fittings meet all requirements of IS 14735:1999, including amendments.
- Process Control Verification (R) - Confirms proper injection moulding, cooling, shaping, and finishing of fittings.
- Specification Compliance Review (R) - Ensures dimensional, mechanical, and material properties meet BIS standards.
- Production Traceability Check (R) - Ensures traceability from raw material batches to finished fittings.
Material & Chemical Verification Tests
- PVC Material Verification (S) - Confirms compliance of raw PVC compound with IS 14735 requirements.
- Titanium Dioxide Content Test (S) - Determines TiO₂ content for colour stability and performance.
- Sulphated Ash Content Test (R) - Measures inorganic residue in material.
- Resistance to Sulphuric Acid Test (S) - Checks chemical resistance of fittings.
- Effect on Water Test (S) - Ensures fittings do not contaminate potable water.
Dimensional & Geometrical Tests
- Outer Dimensions Check (R) - Measures dimensions of fittings as per standard tables.
- Wall Thickness Measurement (R) - Ensures uniform thickness of moulded fittings.
- Socket & End Dimension Test (R) - Verifies socket and spigot dimensional accuracy.
- Access Opening Dimension Check (R) - Ensures compliance for inspection openings.
- Vent Cowl Dimension Check (R) - Confirms correct size and shape of vent components.
- Pipe Clip Dimension Check (R) - Ensures proper fit and sizing of clips.
- Tolerance Compliance Check (R) - Ensures all fittings meet IS 14735 tolerances.
Mechanical & Functional Tests
- Stress Relief Test (R) - Evaluates dimensional stability after heat exposure.
- Impact (Drop) Test (R) - Checks resistance to impact at specified conditions.
- Water Tightness of Joint Test (R) - Ensures leak-proof performance of assembled joints.
- Assembly Fitment Test (R) - Confirms proper fitting with pipes and accessories.
Thermal & Physical Stability Tests
- Vicat Softening Temperature Test (S) - Determines heat resistance and softening point.
- Workmanship Inspection (R) - Checks surface finish, moulding quality, and defects.
- Visual Appearance Test (R) - Ensures fittings are free from cracks, voids, or deformation.
Surface & Quality Control Tests
- Colour Consistency Check (R) - Ensures uniform colour across production batches.
- Surface Finish Inspection (R) - Confirms smoothness and absence of defects.
Performance & Joint Integrity Tests
- Sealing Ring Compatibility Test (S) - Ensures compatibility with IS 5382 sealing rings.
- Leakage Resistance Test (R) - Confirms no leakage under working pressure conditions.
How to apply for UPVC Plumbing Fittings BIS Approval
The BIS Authorisation process ensures that the UPVC plumbing fittings meet the required standards for proper and efficient operation. This process is set by the Bureau of Indian Standards (BIS) and includes the following steps:
- Online Registration: Manufacturers register on the BIS Manak portal by submitting company, factory, and product details. Foreign manufacturers must appoint an Authorized Indian Representative (AIR).
- Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories to verify material quality, dimensional accuracy, and pressure resistance.
- Application Submission: The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection: BIS officials inspect the manufacturing units to verify the production process, safety measures, and quality control system.
- Grant of BIS License: If all requirements are satisfied, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: After approval, the manufacturer can use the ISI mark on the product with a CM/L number, confirming that the product meets BIS standards.
IS 14735: 1999 Approval Documents Checklist
The following documents are typically required for obtaining BIS approval:
Basic Details: - GST Certificate
- Email ID, Contact Number
- Factory, Office Address
- Rent and Lease Agreement(if applicable)
- Partnership Deed (if partnership firm)
| Product and Packing Details: - Quantity per Package
- Nature of Packing
- Nature of Printing / Marking on Product
|
Testing and Quality Control: - List of testing Equipment
- Calibration Certificates
- QC or Lab In-charge Appointment Letter
- Qualification
| Raw Material Details: - List of Row Materials
- Supplier Details
- Raw Material Invoices
- Raw Material Test Certificates
|
Manufacturing Details: - List of Machinery
- process flow chart
- Layout plan of Factory
| Brand and Certification Documents: - Trademark / Brand Certificate
- Consent Latter From BIS Recognized Laboratory
|
Production Details: - Annual Installed Capacity
- Last Year Production Value
| Additional Documents: - Weekly Off Details
- Hygiene Documents(if applicable)
- Relaxation Latter(if applicable)
- Any Other Relevant Documents
|
Management Details: - Top Management Details
- Concerned Person for BIS Communication
| Required Documents: - Agreement with AIR
- Aadhaar Card with AIR
- AIR Nomination Form
- Required Undertakings
- Scope of License
|
Foreign manufacturers must additionally appoint an Authorized Indian Representative (AIR) to coordinate with the Bureau of Indian Standards (BIS) and manage compliance requirements in India.
Marking Requirements & License Validity
Marking Requirements
When a manufacturer obtains BIS Approval, the ISI Mark for PVCu soil and waste discharge fittings must be clearly and permanently marked on its packaging or on the product. In addition to the ISI Mark, other important details must also be provided on the product or packaging, as specified in the table below, this ensures the product meets all quality and safety standards.
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 14735: 1999 |
| CML Number | Certification Marks License (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Batch / Date | Batch number, heat number, or manufacturing date for traceability |
Note: Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
UPVC Drainage Fittings BIS Approval Validity
After obtaining BIS approval for the drainage fittings, the approval is valid for a fixed period and must be maintained by following BIS rules and standards.
| particulars | Details |
|---|
| Initial Validity | Typically 1 to 2 years, depending on BIS approval conditions |
| Renewal | Must be renewed before expiry by submitting the application along with the prescribed fee and updated documents |
| Surveillane | Includes periodic factory inspections and market sample testing conducted by BIS |
| Compliance | Continuous following to standard and applicable Quality Control Orders (QCOs) is mandatory |
| Risk | Non-compliance or failed sample testing may lead to suspension or cancellation of the BIS license |
Fees for BIS License UPVC Injection Moulded Fittings
The cost of BIS Approval for plumbing fittings includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
| Charge Type | Indian Manufacturers | Foreign Manufacturers |
|---|
| Application Fee | INR 1,000 | USD 15 |
| Audit Charges | INR 7,000 | USD 3,200 – 5,900 |
| License Fee | INR 1,000 | USD 15 |
| Marking Fee | As applicable | As applicable |
| Testing Charges | As applicable | As applicable |
| EVTL India Consultancy Fee | As per actual | As per actual |
Note:
- Application fee for foreign manufacturers is payable via SWIFT (SAARC countries may pay in INR with applicable GST).
- Audit charges for foreign manufacturers vary based on country/location.
- Marking fee depends on the product category and production volume (MSME benefits may apply).
- Testing charges are paid directly to BIS-approved laboratories.
- Consultancy fees depend on product type and factory location
Conclusion
The Bureau of Indian Standards has specified the minimum requirements for UPVC Injection Moulded Fittings used in soil and waste discharge systems under IS 14735: 1999. The certification ensures that the moulded fittings meet strict quality parameters and joint performance. It also guarantees the reliable performance of fittings in drainage systems under varying load conditions. This standard plays an important role in maintaining uniform quality across building drainage and sewerage systems.
BIS certification is mandatory for all manufacturers of moulded fittings to avoid any legal action. The product license. Manufacturers can strengthen their brand reputation in the market by obtaining the product license. EVTL India offers end-to-end support in documentation, filling the application, and testing coordination.
