La présente norme concerne les robinets-vannes en acier munis de brides ou d'embouts à souder de DN 25 à DN 600 et d'ISO PN 20 à ISO PN 420 (1).Le robinet-vanne est du type suivant : tige de manoeuvre montante à filetage extérieur, arcade, volant de manoeuvre non montant, chapeau boulonné sur le corps et divers types d'obturateurs.La nomenclature des pièces constitutives d'un robinet-vanne est donnée dans l'annexe 1. Cette dernière illustre également quelques dispositions acceptables pour la réalisation d'un robinet-vanne à coin.
ISO 10434:2004 specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions would indicate a need for full port openings, heavy wall sections and large stem diameters. It sets forth the requirements for the following gate valve features: bolted bonnet; outside screw and yoke; rising stems; nonrising handwheels; single or double gate; wedge or parallel seating; metallic seating surfaces; flanged or butt-welding ends. It covers valves of the nominal sizes DN 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500 and 600, corresponding to nominal pipe sizes NPS 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24. It is applicable to pressure Class designations 150, 300, 600, 900, 1500 and 2500.
COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.
Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!
Request your free, no-obligation live demo
I discover COBAZ