IS 3224 BIS Certification for Valve Fittings for Compressed Gas Cylinder Excluding Liquefied Petroleum Gas Cylinders

About IS 3224

Editions and amendments of IS 3224

Amendments:First Amendment (2024), Second Amendment (2025). Test reports must reflect the standard with its amendments.

Marking fee for IS 3224

BIS charges an annual minimum marking fee for the ISI mark under IS 3224, set by unit size, plus a per-unit rate once production passes the minimum:

Sampling and key tests for IS 3224

From the BIS product manual for IS 3224, which BIS officers and applicants follow for certification:

Sample quantity:(a) Assembled valves- 11 pieces/ 20 Pieces (For Valves

Tests BIS can carry out in a day during factory inspection:

• Tensile Strength & Cl. 5.3.1 Elongation
• Impact Strength Cl. 5.3.2
• Bursting pressure test on PRD Cl.13.4.2
• Yield temperature of fusible plug Cl. 13.4.3
• Valve inlet Cl.8
• Valve outlet Connections Cl 9
• Hydraulic Burst Pressure test Cl. 10.4.1
• Valve impact test Cl. 10.4.2
• Valving Torque test Cl. 10.4.3
• Excessive Torque test Cl. 10.4.4
• Leak tightness test Cl. 10.5
• Flame impingement test Cl. 10.8
• Flow capacity of PRD Cl. 10.9

The full type test covers every clause of IS 3224; the list above is what can be checked on site.

ISI licences under IS 3224

BIS records 19 operative licences (21 including deferred, cancelled or under stop marking). Most licensed factories are in Gujarat (5), Haryana (5), Maharashtra (2), Uttar Pradesh (2), Telangana (1).

Testing against IS 3224

BIS inspects the factory and has samples tested to the full Indian Standard at a BIS or BIS-recognised laboratory. After grant, the factory keeps testing production under the Scheme of Inspection and Testing, and BIS draws factory and market samples.

The test report has to cover every clause of IS 3224 that applies to the product, in the edition current on the date of testing. When BIS revises IS 3224 or replaces it with a new edition, existing licence holders move to the new edition by the date BIS sets in its notification.

How to get an ISI mark licence under IS 3224

The licence is granted to the manufacturer for a specific factory and product. Indian factories apply under Scheme-I; overseas factories apply under the Foreign Manufacturers Certification Scheme (FMCS) and must nominate an Authorised Indian Representative.

1. Confirm the exact Indian Standard and the varieties to cover
2. Get the product tested at a BIS-recognised lab (simplified procedure) or arrange BIS sampling
3. Apply on Manak Online with factory, quality-control and test documents
4. BIS factory inspection and sample verification
5. Grant of licence, then marking with the ISI mark and CM/L number

Timeline. BIS targets 30 days under the simplified procedure (applying with a recent lab test report) and 90 days under the normal procedure. Overseas factories under FMCS typically take around 6 months.

Fees. Application fee ₹1,000 and annual licence fee ₹1,000, inspection charges of ₹7,000 per man-day, testing charges, and an annual minimum marking fee set for each Indian Standard (with concessions for micro and small units).

Mark. Certified products carry the ISI Standard Mark with the IS number and the CM/L-XXXXXXXXXX licence number.

Frequently asked questions

Other standards in Cylinder, Valves and Regulator

• IS 3196 3 products
• IS 3745 Yoke Type Valve Connection for Small Medical Gas Cylinders
• IS 7142 Welded Low Carbon Steel Cylinders for Low Pressure Liquefiable Gases Not Exceeding 5 Litre Water Capacity
• IS 7285 2 products
• IS 7302 Valve Fittings for Gas Cylinder Valves for Use with Breathing Apparatus
• IS 7312 Welded and Seamless Steel Dissolved Acetylene Gas Cylinders
• IS 8737 Valve Fittings for Use with Liquefied Petroleum Gas Cylinders of More Than 5 Litre Water Capacity Part 2 Valve Fittings for Newly Manufactured LPG Cylinders
• IS 8776 Valve Fittings for Use with Liquefied Petroleum Gas (LPG) Cylinders up to and Including 5-Litre Water Capacity
• IS 9798 Low Pressure Regulators for Use with Liquefied Petroleum Gas (LPG) Mixtures
• IS 14899 Liquefied Petroleum Gas Containers for Automotive Use

Source: BIS lists of products under compulsory certification (Scheme-I, Scheme-II), checked October 2026. See the full BIS product list or all Indian Standards.