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About Us

Bachmann India was established in 1987 as an Indo- American Joint – Venture to address the need for highly engineered flue gas control and isolation equipment in the India sub – cotinent. A significant equity ownership is retained by Wahlco-Metroflex Inc., USA (now, part of the Senior Plc group), which provides original technical inputs for the design and supply of a comprehensive range of dampers, expansion joints and ductings.
Commencing from its first factory in Faridabad, Bachmann design dampers and diverters soon achieved rapid acceptance in the Indian market. Fabric expansion joints utilize high quality fabric composites custom engineered by our long experience in this field. Turnkey supply of Gas Turbine Inlet & Exhaust Systems commenced in 1996 in association with an Australian company (now part of Downer Engineering).
Operational flexibility is provided by a second design and manufacturing unit in South Inidia set-up in 2001 at Ambattur in Chennai. An early achievement of this unit was supply of six(6) off frame5 and Frame6 exhaust systems to Oman thru L & T. Bachmann India is the only Indian company to have supplied the Gas Flow Diverter for the massive Frame-9FA Gas-Turbine (PPCL, Bawana projects thru BHEL).High quality Acoustic Enclosure are supplied using the characteristic modular panel system developed by NAP Acoustics, who also provides the engineering expertise for steam Vent Silencers.
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Our Associates


WahlcoMetroflex, Inc. (https://www.wahlcometroflex.com/), designs, manufactures and services a broad range of high performance isolation and flow control dampers, expansion joints and releated duct systems. The OEM lines of equipment originally manufactured under the Bachmann, Tuboflex USA, Pentney Engineering, Metroflex & And co lables belong to WahlcoMetroflex. It operates out of its headquarters located at Lewiston, Maine, USA. In 2010, WMX merged with Senior Flexonics Pathway, Division of Senior Operations LLC.

It has an established trace record of over 50 years. The Wahlco Metroflex families of products are in service around the world in Power Plants, Refineries, Chemical Plants, Pulp & Paper Mills, Steel Mills, Incinerators and Combustion and Hot Gas Systems of many kinds.



Downer EDI Limited (Downer EDI) is an Australian listed company, which provides comprehensive engineering and infrastructure management services to the public and private power, rail, road, telecommunications, mining and mineral processing sectors in Australia, New Zealand, Asia and the Pacific.



NAP Acoustics was established in Singapore in 1988, and its principal activities are in acoustics, noise control and vibration engineering. Its manufacturing facilities located in Singapore, Hong Kong and Shenzhen, China cater to clients in 15 countries from U.A.E. to Japan. The company has its own R&D establishment with accredited acoustic testing facilities and in-house experts who are focused on developing the next-generation of acoustic products. It has a proven track record for the complete range of noise control products of NAP SILENTFLO, all of which are tested at NATA registered independent laboratories:

  • Modular Acoustic Enclosures
  • Transportation Noise Barriers
  • Gas Turbine Intake and Exhaust Silencers
  • Diesel Engine Exhaust Silencers
  • Steam Vent Silencers
  • Air-conditioning silencers
  • Acoustic Doors and Louvers


1.bill about1987-Incorporation of Company in joint venture with Bachmann Industries Inc., USA
1991-Bachmann India becomes sole Indian partner of Wahlco Group formed after merger with Metroflex, UK.
1992-Association with Wahlco, Inc., USA for supply of FGC systems to the Indian market
2.bill about1996-First Exhaust By-pass system supplied for NTPC Dadri (Siemens V94.2)
1999-Exhaust system components supplied to GE (Nuovo Pignone)
1999-India’s first FGC system (demonstration unit) operates at NTPC Talcher
3.bill about2002-Formal tie-up with Downer Engineering Australia for GT ancillaries
2004-Tech. agreement for
Acoustic Enclosures signed with db metals, Australia

2005-First Acoustic Enclosure for steam turbine supplied to BHEL
4.BILL ABOUT2006-2xV94.2 Exhaust systems commissioned at Konaseema Power Station
2008-ARAMCO certified large stacks are supplied to Saudi Arabia
2008-Sulphur Burning FGC systems commissioned at NTPC-Rihand
6.bill about2010-Supplied 4 units of GD & GFD for Frame9FA size Gas Turbine-Largest in India
2011-Received an order for 258 nos. damper for Mahagenco-Koradi TPS expansion projects
2012-Bachmann have technical collaboration with NAP Acoustic South East Asia Pte. LTd.
2012-Received an order for 330 nos. damper for NTPC-Kudgi projects
5.BILL ABOUT2013-Worlds biggest ever damper supplied to L & T MHI for Mahgenco-koradi project.(27245 x 12140)
2013-Booked order for supplying of Dampers for 2x660MW – RRVUNL CHHABRA SCTPS -II