BIS Certification for Horizontal Centrifugal Pumps IS 6595 (Part 2): 2024

• Designed for efficient handling of clear, cold water in general applications
• Engineered for stable performance under continuous operation
• Tested for efficiency and durability
• Made with BIS-compliant materials

BIS certification under IS 6595 (Part 2): 2024 is required for businesses involved in manufacturing, importing, or supplying clear and cold water centrifugal pumps in India. Applicable to:

• Manufacturers (India): Must get BIS certification if the pumps are covered under QCO.
• Foreign Manufacturers - Need certification to export the product to India.
• Importers/Brand Owners - Must ensure that the Industrial centrifugal pumps are BIS certified before selling.
• Sellers/Distributors - Should only sell certified water pumps.

• R (Required): Test must be conducted in the manufacturer’s in-house laboratory .
• S (Subcontracting Allowed): Test can be conducted in a BIS-recognized or NABL-accredited external laboratory.

• Material of Construction Verification (R) - Ensures compliance with IS 6595 material requirements and corrosion resistance standards
• Constructional Feature Inspection (R) - Verifies pump design, casing structure, and dimensional conformity
• Casting Quality Check (R) - Ensures defect-free casting of volute casing, impeller, and pump body
• Component Integrity Test (S) - Confirms mechanical strength and assembly reliability of pump components
• Direction of Rotation Check (R) - Ensures correct rotational direction as per design requirement
• Design Limitation Verification (R) - Confirms pump operates within specified design limits

• Hydrostatic Test of Volute Casing (R) - Ensures casing strength against internal pressure
• Impeller Balancing Test (R) - Ensures vibration-free and smooth rotation of impeller
• Performance Test (S) - Evaluates discharge, head, and efficiency of pump
• Guarantee Performance Test (S) - Verifies pump performance against declared specifications
• Tolerance on Pump Performance Test (S) - Ensures acceptable deviation limits as per IS requirements
• Discharge Measurement Test (S) - Measures flow rate (LPS) of pump
• Total Head Test (S) - Confirms pumping head performance under rated conditions

• Vibration Test (S) - Ensures mechanical stability during operation
• Speed Measurement Test (S) - Verifies the rated RPM of the pump
• Power Input Test (S) - Measures kW consumption during operation
• Voltage & Frequency Check (S) - Ensures stable operation under rated electrical supply
• Current Measurement Test (S) - Confirms motor current within safe limits
• Power Factor Test (S) - Evaluates the electrical efficiency of motor

• Continuous Operation Test (S) - Ensures long-duration operational reliability
• Thermal Stability Test (S) - Verifies heat generation under rated load conditions
• Load Endurance Test (S) - Confirms performance stability under continuous load

• Dynamic Balancing of Pump Assembly (R) - Ensures smooth operation and reduced vibration
• Dimensional Verification Test (S) - Confirms compliance with design drawings
• Casing Strength Test (R) - Verifies structural integrity of pump casing
• Impeller Strength Test (R) - Ensures durability under hydraulic load

• Routine Testing of Each Pump (R) - Ensures production consistency and conformity
• Batch Sampling Test (S) - Confirms uniformity across production lots
• Test Record Maintenance (R) - Maintains traceability of all test results
• Calibration of Test Equipment (R) - Ensures accuracy of measurement instruments
• Incoming Material Inspection (R) - Verifies compliance of raw materials used

• Type Test for Design Approval (S) - Conducted for new pump designs
• Design Change Re-Testing (S) - Required when design modifications are made
• Periodic Performance Verification Test (S) - Ensures long-term compliance
• Annual Compliance Test (S) - Confirms continued adherence to IS 6595 requirements

• ISI Marking Verification (R) - Ensures correct use of BIS Standard Mark
• Labelling Compliance Check (R) - Verifies proper product marking and details
• Licence Scope Verification (R) - Confirms rated parameters match certified scope
• Standard Compliance Declaration Check (R) - Ensures conformity with IS 6595:2024 requirements

The BIS certification process ensures that the water pumping systems 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:

1. 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).
2. Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories for material safety and structural durability.
3. Application Submission: The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
4. Factory Inspection: BIS officials inspect the manufacturing unit to verify the production process, safety measures, and quality control system.
5. Grant of BIS License: If all requirements are met, BIS grants the certification license under Scheme-I.
6. 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.