Section 5(2)(e) in The U.P. Licences for the Possession of Denatured Spirit and Specially Denatured Spirit Rules, 1976
(e)The spirit vapour pipe from the evaporator shall be securely attached to the condenser and the recovered spirit shall pass through a close main pipe soldered or rivetted to the condenser and the cover of the receiver respectively and extended nearly to the bottom of the receiver.