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This Indian Standard lays down the requirements for the design, materials, construction, performance, and testing of pressure regulators. It applies to regulators used with oxygen, acetylene, LPG, hydrogen, and other industrial gases. The scope includes both single-stage and two-stage regulators that reduce high cylinder pressure to the required working pressure in a controlled and safe manner. The standard specifies requirements for regulator body strength, pressure-reducing mechanism, gauges, safety devices, and connection fittings. It also ensures compatibility with cylinders and prevention of leaks, backflow, or pressure surges. Dimensional requirements are included to facilitate interchangeability and safe connections across different manufacturers. Stringent testing ensures that pressure regulators comply with all performance and safety requirements. Tests include verification of pressure reduction accuracy, flow stability, resistance to leakage, endurance under cyclic loading, and safety valve operation. Regulators are also subjected to burst pressure and strength tests to ensure they can withstand extreme conditions without failure. These tests confirm reliability in industrial environments where regulators are exposed to frequent usage and varying gas pressures.

BIS certification under IS 6901:2018 assures that pressure regulators are safe, durable, and compliant with national standards. For manufacturers, it establishes credibility, ensures regulatory compliance, and enhances acceptance in domestic and export markets. Certified regulators also reduce liability risks and boost confidence among customers. For industries and end-users, the use of certified regulators minimizes the risk of gas leaks, explosions, and operational failures. Certified regulators ensure consistent gas flow, stable pressure, and longer equipment life, thereby improving welding quality, operational safety, and overall productivity. In critical industries such as fabrication, construction, shipbuilding, and automotive manufacturing, the reliability of certified regulators translates directly into workplace safety and cost efficiency.