Catalog excerpts
CLAPET ANTI-RETOUR EtanchEitE METAL/METAL NON-RETURN VALVES METAL/METAL 4000 K et 4100 K 4000 I et 4100 I DESIGNATION Les clapets anti-retour Duff Norton Europe pour circuit hydraulique haute ou basse pression empechent I'inversion du debit dans un circuit ou protegent des surpressions qui peuvent se produire a certains endroits d'un circuit. Les clapets non guides ne sont pas totalement etanches sur les circuits de gaz, air comprime, vapeur, eau, etc. TARAUDAGE - ref. 4000 K : BSPP-F/F - DN 1/4" a 1" - ref. 4100 K : NPT-F/F - DN 1/4" a 1" PRESSION DE SERVICE Voir tableau DEscRIpTIoN Corps : - 4000 K : acier traite nickel chimique, taraudage BSPP - 4100 K : acier traite nickel chimique, taraudage NPT - 4000 I : acier inox 316 L, taraudage BSPP - 4100 I : acier inox 316 L, taraudage NPT BILLE, RESSORT ET GUIDE Acier inox pour tous modeles EtanchEitE Clapet constitue par une bille inox TARAGE STANDARD 0,5 bar pour circuit d'aspiration. 4,5 bars pour circuit de refoulement. Autres tarages sur demande, de 0,1 bar a 10 bars. DESIGNATION Duff Norton Europe non return valve for low or high pressure hydraulic circuits prevents reversal of the flow in a circuit or protects the circuit against overpressure. Non-guided valves are not completely gastight, compressed air, steam, water... TAppING -ref 4000 K BSPP-F/F - 0 from 1/4" to 1" -ref 4100 K NPT-F/F - 0 from 1/4" to 1" WORKING PRESSURE See table DEScRIpTION Body -4000 K: chemical nickel plated steel, BSPP tapping -4100 K: chemical nickel plated steel, NPT tapping -4000 I: stainless steel 316L, BSPP tapping -4100 I: stainless steel 316L, NPT tapping ball, spring and guide Stainless steel on all models TIGHTNESS Plug: stainless steel ball STANDARD cALIBRATION 0.5 bar for vacuum ciruits 4.5 bars for reversing circuits Other calibration on request, from 0.1 to 10 bars
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