Sintex group, known for its Sintex branded water tanks, has agreed to sell its overseas business to a consortium of private equity investors as part of efforts to pare debt and repay lenders. Sintex Plastics Technology, the arm of the group engaged in manufacturing of water storage tanks and other building products and solutions, has entered into a definitive agreement to sell its European subsidiary Sintex NP SAS to Xtech Invest SAS for a consideration of €155 million.