Is there any mechanism or tool that helps in cleaning (accessing) gate pocket from Fe debris?Will the 3E butterfly with horizontal stem provide better sealing in such condition? A full answer will require more details from your side, but since you are lacking response let me try anyway:A gatevalve allowing Fe-debris to be catched in pockets under normal conditions indicates not the best valve construction suitable or selected under the present conditions.Cleaning might be difficult, and best solution could (as you suggest as alternative) be to change the conditions/ equipment.Is pigging possible and will this help?Change to gate-valve construction without pockets?Change to other type of valve (same building length and flanges), double eccentric BFL possible?

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