INTRODUCTION

Screw down bib taps and stop valves are fixtures found in plumbing systems, serving the purpose of regulating the water flow within the plumbing infrastructure.

To ensure the product quality of screw down bib taps and stop valves, the Bureau of Indian Standards (BIS) has made it mandatory for manufacturers to undergo BIS registration and obtain the BIS ISI mark before selling it in the market. Manufacturers can use the ISI Mark on their products only after obtaining a license from BIS that is granted after BIS registration. The presence of the ISI mark on a product indicates that it complies with BIS's stringent quality standards

IS 781: 1984 covers cast copper alloy screw down bib taps and water service stop valves. This standard specifies the requirements for copper alloy screw down bib taps and stop valves that are suitable for cold non-shock working pressures of up to 1.0 MPa.

REQUIREMENTS FOR IS 781:1984

1.     The male inlet on bib taps must be screwed, and stop valves must have screwed female, male, or mixed ends.

2.     The nominal sizes of bib taps and stop valves must be per standard.

3.     The nominal bore of the socket or pipe outlet to which the tap or valve is normally fitted shall be used to determine the nominal size of the bib tap and stop valves.

4.     The materials used in the manufacture of various components of bib taps and stop valves must meet the requirements specified in the standard.

5.     The dimensions of bib tap and stop valves and their components must be in accordance with the standard.

6.     All castings must be sound and free of laps, blow holes, and pitting, and both the external and internal surfaces must be clean, smooth, and sand-free.

7.     Bib taps must be built in such a way that the water stream does not break or spread excessively.

8.     The bib taps and stop valves must have a minimum finished mass as specified in the standard.

9.     The bib taps must always be brightly polished.

10.  Marking shall be done as per the requirements of IS 781:1984.

11.  Every bib taps or stop valve shall be marked with the manufacturer’s name or trade mark and nominal size on the body.

12.  The ISI mark can also be marked on bib taps and stop valves.

13.  The Manufacturer must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark).

TESTS

Every bib tap or stop valve complete with its components shall be tested in accordance with the method specified.

·       Dimensions and tolerances

·       Construction and workmanship

·       Finish

·       Hydrostatic pressure testing

Process for BIS ISI Mark Certification

To know the process in detail, please visit:

• ISI Mark Certification for Domestic Manufactures
• ISI Mark Certification for Foreign Manufactures

Under BIS Registration Products ISI and CRS

• BIS CRS Registration For IT Products List
• ISI Mark Registration For ISI Products List

Benefits of BIS Certification

The BIS registration provides the following benefits:

1.     Increase sales: BIS-registered products are more likely to be of higher quality and attract more customers.

2.     Reduce the amount of money spent on quality maintenance: Upon getting certification, there's no need to follow separate quality guidelines for products.

3.     Enhance product credibility and reduce environmental risk: BIS-certified items are genuine and trustworthy because they work really well and last a long time.

4.     Ensure the highest level of quality and dependability: The presence of a BIS registration number implies that the product is of high quality and dependability.

5.     Ensure the organization’s expansion: BIS certification boosts your product’s reputation, resulting in significant growth and market exposure.

CONCLUSION

Screw down bib taps and stop valves have been included in the mandatory ISI Certification Scheme under the IS 781:1984 standard. Manufacturers cannot import, export, or sell this product in the Indian consumer market without the ISI Mark imprinted.

If you need any assistance with BIS ISI registration for screw down bib taps and stop valves or ISI mark certification for screw down bib taps and stop valves, you can reach out to Evtlindia. We provide assistance with all documentation formalities with India's BIS office, ensuring a smooth and hassle-free registration experience, guiding you through the entire process from start to finish.

You can contact us via email at contact@evtlindia.com or by phone at 9560935898. Feel free to get in touch with us anytime for the support you need.