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Valeur de pression du réservoir d’air

2020-10-27View Original

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Que signifient les lettres W21.8-14RH(F) sur la valve de dépression du réservoir de gaz ? Quelle lettre représente la filetage extérieur ?
Reply #22020-11-08
Bouteilles en acier au méthane de 40 litres QF-30, QF-30A, etc., avec des filets de type W21.8-14LH (F) ; diamètre extérieur W21.8 de 21,8 mm, 14 dents par pouce, où 14 indique un pas de 1,8142 mm, et LH indique approximativement la direction des filets.

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