Equipment and Supplies: Samplers--Problems with installation of plastic nozzles on samplers June 13, 1980 QUALITY OF WATER BRANCH TECHNICAL MEMORANDUM NO. 80.18 Subject: Equipment and Supplies: Samplers--Problems with installation of plastic nozzles on samplers It has been brought to our attention that if teflon or nylon nozzles are screwed into the DH-48 sampler body too tightly, they will bend. This is due to the fact that the nose of the sampler is not perpendicular to the axis of the nozzle. Nozzles should be tightened by hand, and screwed in to the point at which the knurled part of the nozzle just touches the body. Tightening by pliers generally is not necessary, but if pliers must be used, do not tighten beyond this point. Other types of samplers may present a similar problem; however, we do not believe it to be as severe as that of the DH-48 sampler. Tightening of nozzles in all types of samplers by use of pliers is discouraged. R.J. Pickering File: EQ 1030 Memoranda superseded: None Keywords: Water quality, sediment samplers, nozzles, equipment. WRD Distribution: A, B, FO, PO