When I was in Bombay during 1976 we had purchased  two Ganesh sprayers for our rose garden at Virar. They had an attachment , where the nozzle could be unscrewed and an extension  PVC  tube could be screwed on. This attachment is not shown in your web site.  When  moved to Sydney the ganesh sprayers moved with us. People laughed at us, but old is gold. Believe it or not, the sprayers are still  in use except for change of washers occasionally.  I have a suggestion. The nozzle could be unscrewed and an attachment of say one to two metre PVC  tube attached ending in a lance.  Another suggestion is please use Dupont washers. They last for two to three years When I visit Bombay next (now Mumbai) I will buy a few of the Ganesh sprayers and  present them as gifts to my friends, so that they can see how made in India is better than made in U K,  Italy or Germany. After you have carried out my suggestion of using DuPont washers and the spraying lance please let me know.  Long  live ASPEE and their great products. Bharat Mata ki Jai. Thanks and regards