API - Leser

Type 526Spare parts recommendationsThe following recommendations for spare parts should be taken as a guideline.The actual needs for the replacement of parts depend on various conditions like• operating temperature• set pressure and operating pressure• fluid• environment• material selectionType 526These operating conditions have a significant influence on the product life of safety relief valves.Item Component Commision / start-up Two year operating Fife year operating60 Gasket 1 per valve 1 per valve 2 per valve7 Disc 1 per 5 valves 2 per 5 valves 1 per valve61 Ball 1 per 5 valves 2 per 5 valves 1 per valve57 Ball 1 set per 5 valves 1) 2 sets per 5 valves 1) 1 set per valve 1)5 Nozzle 0 0 1 per 5 valves15 Stainless steel bellows 1 per 5 valves 2 per 5 valves 1 per valve12 Spindle 0 0 1 per 5 valves1 per valve: per each supplied safety valve one piece shall be provided1 per 5 valves: one spare part per 5 supplied equal safety valves1)1 set = 15 piecesRework of seat and discMinor damages on the seating surfaces of nozzle and disc can be repairedby lapping or by machining and successive lapping. For this purpose LESERoffers lapping stamps as well as lapping paste.Lapping stampsOrifice Designation and size Material-No.D + E Lapping stamp no. 3, d 0 18 / orifice D + E 445.1359.0000F + G Lapping stamp no. 4, d 0 23 / orifice F + G 445.1459.0000H Lapping stamp no. 5, d 0 29 / orifice H 445.1559.0000J Lapping stamp no. 6, d 0 37 / orifice J 445.1659.0000K Lapping stamp no. 7, d 0 46 / orifice K 445.1759.0000L + M Lapping stamp no. 8, d 0 60 / orifice L + M 445.1859.0000N Lapping stamp no. 9, d 0 74 / orifice N 445.1959.0000P Lapping stamp no. 10, d 0 92 / orifice P 445.2059.0000Q + R Lapping stamp no. 12, d 0 125 / orifice Q + R 445.2259.0000T Lapping stamp no. 13, d 0 165 / orifice T 445.2359.0000Lapping pasteLapping paste Supplying-lot Designation ApplicationTetraboron paste“WL” F 800Tetraboron paste“WL” F 1200Tubes to 100 g net F grinding-paste 800 Primary lappingTubes to 100 g net F grinding-paste 1200 FinishingLWN 480.01-E01/83