Sempell Gate Valves, Forged High Pressure
Contents
1. gt PENTAIR SEMPELL A WARNING Storage in an open area for a limited period can be considered only in case the valves have appropriate packing packed incases lined with tarred paper and contents well protected with barrier sacks e Do not place consignment packages directly on the ground e Do not expose consignment packages to the weather or directly to the sun e Check the packages every two months www pentair com valves Operating and Safety Instructions Forged Steel Gate Valves Before installation these instructions must be fully read and understood These instructions summarise the main warnings concerning the routine operations as per the related Installation and Maintenance Manual A WARNING e Before lifting or handling the valve or the valve actuator assembly make sure you have no limitations to do it e Check if there are some safety messages attached to the lifting points of the valve or to the actuator RED RIGID LABEL and if any find the proper document in the user manual which describes how you can operate under safety conditions e For valve handling and or lifting the lifting equipment fasteners hooks etc must be sized and selected while taking into account the valve weight indicated in the packing list and or delivery note Lifting and handling must be made only by qualified personnel Do not use the lifting points located on the actuator if any to lift the valve These lifting poin2. m 1 25 4 M16 14 3 8 M10 30 p25 S175 M16 14 1 2 M12 70 1 375 34 92 M20 18 5 8 M16 140 1 75 44 45 M20 18 3 4 M20 260 2 50 8 M24 20 1 M24 580 225 57 15 M24 20 11 8 M27 760 2 5 63 5 M27 23 11 4 M30 1350 BNS 69 85 M27 23 3 76 2 M27 23 925 82 55 M30 28 3 75 95 25 M33 35 Service limitations According to PED ESR par 3 3 and related the design pressure and temperature are indicated on the nameplate TYPE O DOUBLE P SELF REL TURER RAIMONDI MFG PLANT RESCALDINA MI ITALY CE 0496 Sempell Installation of the safety device when present on site at customer care To avoid any danger to people it is mandatory to perform the safety device installation by following these instructions The connection pipe between the nozzle and the safety globe valve and that between the valve and the rupture disc are not at our care e The safety device has to be installed to the side of the valve with the outlet downwards e Incase of gate valves for steam service it is necessary to use a condensate filling pipe piece Pentair reserves the right to change the contents without notice
3. ter for testing and in case the piping system has been shut down after testing for a long time the following recommendations should be adopted a Use corrosion inhibitor with water to pressurize the piping system b After testing the piping system should be depressurized and the test water completely drained e For operating temperatures above 200 C 392 F a thermal insulation of the body is recommended Maintenance A WARNING e Depressurize the line before starting any maintenance Failure to do so may cause serious personal injury and or damage to the valve e Incase of valve removal depressurize the line before starting any operation with the valve in open position to avoid any remaining pressure in the body cavity Then close manually the valve by way and not by torque Pentair reserves the right to change the contents without notice SEMLT 0008 EN 1306 Operating and Safety Instructions Forged Steel Gate Valves Important e To ensure tightness of P S gasket pull up bolts must be tightened when the valve is under fully hydrostatic pressure test or twenty four hours in operation e Yearly checking of bolt torque is recommended See Tables 1 amp 2 e The segment ring has to be fixed by the safety ring Ensure that the segment ring is in the correct position Table Bolt Torque for Packing Bolts Stem Bolt Table II Bolt Torque for Bonnet Bolts DiameterDiameter Torque DiameterTorque in mm mm Nm in mm N
4. ts are for the actuator only e Caution must be taken during the handling to avoid that this equipment passes over the workers or over any other place where a possible fall could cause damage In any case the local safety regulations must be respected Installation In case the valve is equipped with electric actuator please refer to the following warnings A WARNING e See the actuator user manual for the actuator preparation e In the open direction only the stop has to be set with the limit switch In case the limit switch is not adjusted the backseat will be destroyed by the high torque e In the close direction the end stop also has to be set with the limit switch as the first stop The torque switch in the close position has to be set as a second stop e The adjustment of the limit switches in both end stop positions has to be handled when the actuator is assembled to the valve according to the operation instructions Important e Gate valves must be closed only by way and not by torque e Before welding make sure the valve is completely open e Verify that the direction of the flow of the line corresponds to the arrow indicated on the valve body e Valves without the arrow are bi directional e t is recommended to perform piping flushing before the valve installation If this is not possible the valves must be set with the disc in full open position before starting with flushing e f piping system is pressurized with wa
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