About us


Large volume and wide variety of hazardous and toxic materials are currently in use. Coupled with increasingly stringent regulatory requirements positive containment and control measures have become mandatory. BOS are well qualified to provide technological assistance for applications involving hazardous and difficult to- handle fluids and gases.

BOS engineers combine more than 28 years of experience in valve design and development with expertise in metallurgical techniques. Their strategic use of Special materials and other high-performance metals makes Bellow Seal Valves the optimum choice worldwide for a broad range of applications. The exceptional versatility, superior operating characteristics, robust construction and consistent dependability of Bell-O-Seal Valves have won us widespread acceptance across the industry, especially chemical and hydrocarbon processing industries.

Typical applications of our valves include: Thermic fluid, Ammonia, Chlorine, Phosgene, Butadiene, Benzene, Ethylene, Hydrochloric acid, Hydrogen, Steam, Fatty acid to name just a fraction of the many possible uses.

BOS’s time and again  performance tested assures safer operating conditions and compliance with anti-pollution regulation. 'Zero Stem' leakage design eliminates product losses, hazards to humans and the environment, and thus saving costly downtime on maintenance.










We are indeed grateful to all our customers and users of our product for making  BOS as one of the leading brands in the world for its Bellow Seal Valve. With an able support of my son Rajesh K Salins as the Managing Director of the company taking this mantel to greater height with our most efficient and able team.

BOS is committed to create a Clean and Green environment and for this BOS has strove hard to maintain the highest quality standards and systems. BOS is not only ISO 9001, but also CE / PED, Ta-Luft, API 591, API 624, Seismic, Functional, Fire Safe Test and many more. Having said this BOS is the only Indian company and the 6th company in the world having Euro Chlor and RusChlor certification, to be used in Caustic Chlorine plants. Today India is self-reliant and need not spend valuable foreign revenue.

Keeping in mind of our very beloved Prime Minister of India Mr. Narendra Modi of his motivation of MAKE IN INDIA, BOS is now moving in supporting this move of making Nuclear Valves for the Indian Nuclear department only. Moving towards making India stronger and self-reliant. BOS for its excellent performance , year after year we have been awarded Central Ministers Mr Suresh Prabhu (2015) and Mr Piyush Goyal (2017). Contributing towards the growth of the nation.

To a humble beginning of 15 people way back 1989 to a workforce of over 500 in 2019 with over 100,000 sq. feet of manufacturing with latest VMC’s, CNC’s, Laser Welding on Bellows, MSLD to PMI testing equipment’s, BOS forges forward to exporting of it valves not only to the Refinery, Petrochemical or Chemical plants, but also to the Solar power projects.

Last but not the least I give Glory and Honour to our Lord to having brought us to this day and I dedicate our company to him. It is my pleasure to welcome our chosen customer.