Replacement Quartz Sleeve for SITA UV 405, SI028103, 500 mm x 23 mm, article 3848-0715. Data: overall length 500 mm, outside diameter 23 mm. OEM reference: SI028103 / 028103 / 28103. Fits: SITA LCD 405, SITA UV 405. Takes lamp SI028102 (437 mm). Supplied as a replacement part made to the dimensions and electrical data of the original; the OEM reference is given for identification. The quartz sleeve isolates the lamp from the water and passes the germicidal UV into the chamber. It fouls with hardness, iron and manganese deposits and is cleaned or replaced when the UV intensity reading cannot be recovered. Check overall length, outside diameter and whether one end is domed (closed) before ordering, and replace the sealing O-rings whenever the sleeve is removed. SITA LCD / Rack LCD series data: low-pressure 40-80 W lamps, 9,000-10,000 h lamp life, 1-40 m3/h, chamber in AISI 304 or 316L. Spare part for UV disinfection systems of S.I.T.A. srl, Genoa, Italy, which builds low-pressure, amalgam and medium-pressure UV units for drinking water, food and beverage, aquaculture, swimming pool, marine and wastewater duty (series AL, LCD / Rack LCD, AM, IT, 440, HDPE, SBT, SMP, SSD, TOC, GR and Pool).