Heavy Duty Non-Return Valves S/520, C/520 Series In-Line, Non-Return Valves G 1/8 to G 1 or 1/8 to 1 NPT Permit free flow of air in one direction only Simple, reliable design High operating pressure Technical data Ordering information To order, quote model number from table Medium: overleaf, e.g. S/521 for the G 1/4 model Compressed air, filtered, lubricated and non-lubricated Operation: Non-return valve Mounting: Line mounted Alternative Models Port sizes: T50 Series In-line push-in non-return valves, G 1/8 S/520 1/8 NPT C/520 see page 5.10.002 G 1/4 S/521 1/4 NPT C/521 T55 and 56 Series In-line threaded Aluminium G 3/8 S/532 3/8 NPT C/532 non-return, see page 5.10.007 G 1/2 S/522 1/2 NPT C/522 G 3/4 S/523 3/4 NPT C/523 G 1 S/524 1 NPT C/524 Operating pressure: 0,3 - 16 bar Operating temperature: -20C to +80C *Consult our Technical Service for use below +2C For high temperature applications (150C Max) TS, TC/520 Series version should be ordered 1 2 Materials: Brass body, nitrile rubber seals, aluminium valve Note: FKM Seals for high temperature version Our policy is one of continued research and development. We therefore reserve the right to amend, 1/08 N/en 5.10.001.01 without notice, the specifications given in this document.Haevy Duty Non-Return Valves General information Model Port size Flow Factor Cracking Weight Kit (Note) BSPP NPT C * Cv Kv** Pressure (bar) (kg) BSPP NPT S/520 1/8 2,40,60,51<0,10,04QS/520/00 C/520 1/8 2,4 0,6 0,51<0,1 0,04 QC/520/00 S/521 1/4 4,310,92<0,10,09QS/521/00 C/521 1/4 4,3 1 0,92<0,1 0,09 QC/521/00 S/532 3/8 10,52,62,24<0,10,14QS/532/00 C/532 3/8 9,2 2,2 1,96<0,1 0,14 QC/532/00 S/522 1/2 174,23,62<0,10,21QS/522/00 C/522 1/2 13 3,2 2,77<0,1 0,21 QC/522/00 S/523 3/4 4210,38,95<0,10,55QS/523/00 C/523 3/4 38 9,3 8,1 <0,1 0,55 QC/523/00 S/524 1 65 16 13,85 <0,1 1,1 QS/524/00 C/524 1 65 16 13,85 <0,1 1,1 QC/524/00 3 *1)C* in dm / (s.bar) 3 *2)Ku** in m /h Note: For high temperature applications a T should be added on spares Kit part number (Te. TQS) 520)00 NNoonn--rreettuurrnn VVaallvvee MMooddeell SS//552200 (BSPP) SS//552211 (BSPP) SS//553322 (BSPP) SS//552222 (BSPP) SS//552233 (BSPP) SS//552244 (BSPP) B CC//552200 (NPT) CC//552211 (NPT) CC//553322 (NPT) CC//552222 (NPT) CC//552233 (NPT) CC//552244 (NPT) BB 43 48 62 76 92 124 1 1 3 1 3 CC 8 4 8 2 4 1 DD 10 11 13 17 18 25 14 19 22 27 36 49 D BSPP = According to BS2779 and ISO-228/1 NPT = Products are finished with National Pipe Straight Threads for Couplings, which are specifically designed to mate with NPT male threads Warning These products are intended for use in industrial compressed air The system designer is warned to consider the failure modes of all systems only. Do not use these products where pressures and component parts used in fluid power systems and to provide adequate temperatures can exceed those listed under Technical Data. safeguards to prevent personal injury or damage to equipment in the event of such failure. Before using these products with fluids other than those specified, System designers must provide a warning to end users in the for non-industrial applications, life-support systems, or other system instructional manual if protection against a failure mode applications not within published specifications, consult NORGREN. cannot be adequately provided. Through misuse, age, or malfunction, components used in fluid power System designers and end users are cautioned to review specific warnings systems can fail in various modes. found in instruction sheets packed and shipped with these products. Our policy is one of continued research and development. We therefore reserve the right to amend, 1/08 N/en 5.10.001.02 without notice, the specifications given in this document. C