AT 450, 45, 459, 4520, Dimension range PN Temperatuer range Material DN 5-00 6-0 - 300 ºC Cast iron DN 5-50 40-85 - 450 ºC Steel DN 5-00 40-270 - 400 ºC Sainless seel AT 450, 45, 459, 4520, Range of Application Safety valve to protect pressure vessels and pipe systems with liquids, air, gases and m. Suitable as overflow valve at constant backpressure. Quality Assurance Approved by TÜV and most of the classification authorities Fulfil requirements acc. to ISO 426. Certificate SS-EN 0204, type 2, 3 and from most of the classification authorities. Type of certificate has to be specified upon ordering. CE-marking Fulfil PED 97/23/EC acc. to category IV group and 2. AT 450-4576 Material Specification AT 450/AT 45 AT 459/AT 4520 AT 4575/AT 4576 Body GG-25 GP-240GH (GS-C25) GX5CrNiMo9--2 2 Seat X2CrNiMo7-2-2 X2CrNiMo7-2-2 X2CrNiMo7-2-2 3 Disc X39CrMo7- X39CrMo7- X2CrNiMo7-2-2 4 Spindle X20Cr3 X20Cr3 X2CrNiMo7-2-2 5 Spring W.nr..200 W.nr..200 X0CrNi8-8 6 Guide GGG-40/X2CrMoS7 GGG-40/X2CrMoS7 X6CrNiMoTi7.22 7 Bonnet GGG-40 GGG-40 G-X6 CrNiMo 8 0 8 Spring plate, 2 pcs W.nr..078/0.8040 W.nr..078/0.8040 G-X6 CrNiMo 8 0 9 Adjusting screw X2CrMoS7 X2CrMoS7 X2 Cr Ni Mo 73 2 0 Ball X40Cr3 X40Cr3 X40Cr3 a Cap (2) GG-25 GG-25 X2CrNiMo 7 3 2 b Lever (4) GGG-40 GGG-40 G-X6Cr Ni Mo 80 2a Soft sealing EPDM EPDM EPDM (D) 2b Soft sealing Neoprene (K) Neoprene (K) Neoprene (K) 2c Soft sealing Viton (L) Viton (L) Viton (L) C Gas tight lever A 4 5 B 3 2 Gas tight cap Soft sealing disc B Edition 2, 2008-0-5 Page (6)
AT 450, 45, 459, 4520, Dimension and weight AT 450, 45, 459, 4520 DN 5 20 25 32 40 50 65 80 00 25* 50 * Seat Ø 2 8 8 8 23 29 37 46 60 74 92 A (2) 28 28 28 28 28 233 35 360 400 500 600 A (4) 25 25 25 25 25 230 330 375 435 540 640 B 90 95 00 05 5 25 45 55 75 200 225 C 50 50 50 200 200 250 250 300 350 400 450 Weight 5 6 6 8 9 2 5 20 33 48 65 *Only AT 459/AT 4520. measurements in mm, weight in kg. (2)=gas tight cap. (4)=gas tight lever. AT DN 5 20 25 32 40 50 65 80 00 Seat Ø 2 8 8 8 23 29 37 46 60 A (2) 200 200 200 200 200 20 285 330 45 A (4) 25 25 25 25 25 230 280 325 40 B 90 95 00 05 5 25 45 55 75 C 50 50 50 200 200 250 250 300 350 Weight 5 6 6 8 9 2 5 20 33 Measurements in mm, weight in kg. (2)=gas tight cap. (4)=gas tight lever. Function and Design Spring loaded and directly acting safety relief valve. With lever for manual testing alternatively gas tight cap. Disc with soft sealing is recommended for fluid wich is difficult to get the valve tight after discharging. Technical Information Pressure increase The safety relief valve is in full open position at a pressure witch exceeds the set pressure max. 0%. For set pressure lower than,0 bar the pressure exceeding is set pressure +0, bar. If lower pressure exceeding is requested please contact Armatec. Blowing down Steam/air/gases: Max 0% at set pressure 3,0 bar Max 0,3 bar at set pressure <3,0 bar Liquids: Max 20% at set pressure 3,0 bar Max 0,6 bar at set pressure <3,0 bar If lower blowing down is requested please contact Armatec Rätten till ändringar utan föregående meddelande förbehålls. Armatec ansvarar inte för eventuella tryckfel eller missförstånd. Dokumenten får kopieras endast i sin helhet. Edition 2, 2008-0-5 Page 2 (6)
AT 450, 45, 459, 4520, Pressure and temperature AT 450/ AT 459/ AT 4575/ AT 45 AT 4520 AT 4576 Set pressure Max. Set pressure Max. Set pressure Max. max. temp. max. temp. max. temp. DN bar 300 C bar 450 C bar 400 C 5 6 40 40 20 6 40 40 25 6 40 40 32 6 40 40 40 6 40 40 50 6 40 40 65 6 40 26 80 6 35 25 00 6 30 22 25-32 - 50-6 - Pressure and temperatures acc. to applied standards for respective valve material. At temperature above 200 o C the temperature has to be specified in order so high temperature spring can be delivered. If other temperatures and pressures limits are requested please contact Armatec. Soft sealing Temperature range soft sealed safety valves; AT 45, AT 4520 och AT 4576 O-ring Neoprene (CR) K -40-+00 C i.g. refrigants Ethylene (EPDM) D -45-+50 C i.g. hot water and m Viton (FPM) L -20-+80 C, i.g. oil and air Others Dimensioning according to given conditions can be sent on request. Please state: fluid, at liquids even density, capacity/power, max temperature and set pressure With bar means bar over pressure bar(ö), bar(g), bar(e), atö or kg/cm 2 if others not are stated. With Nm 3 /h means capacity in normal cubic metre free air/gas (N=normal) and equal with m 3 /h if others not are stated. Lowest set pressure of safety relief valves with soft sealing disc is,0 bar. Capacity coefficient m/gases αd D/G DN5 metal to metal: 0,62 DN5 soft sealed: 0,59 DN20: 0,29 DN25-50: 0,38 Capacity coefficient liquids αd F DN5 metal to metal: 0,48 DN5 soft sealed: 0,47 DN20: 0,9 DN25-50: 0,25 Seat diameter, Do see Dimension and weight. Edition 2, 2008-0-5 Page 3 (6)
AT 450, 45, 459, 4520, Dimensioning DN5-50 DN 5 5 20 25+32 40 50 Seat Met. 2mm Soft. 2mm 8mm 8mm 23mm 29mm Pö bar stae srea 0,2 36 43 678 35 4 633 500 32 38 967 53 63 32 84 99 5 0,5 57 70 2378 54 66 2333 32 39 2 68 84 2789 37 4544 77 27 7233 8 02 3222 77 97 356 72 90 2867 06 33 3767 73 28 656 277 347 9789 2 28 63 4556 2 56 4467 33 70 4056 78 227 5333 290 370 87 46 588 3889 3 72 22 5578 63 20 5467 84 237 4967 240 309 6533 392 504 0667 624 802 7000 4 24 278 6433 203 264 6300 233 30 5733 306 396 7544 499 646 2333 793 026 9556 5 257 333 7200-37 7056 279 363 64 366 476 500 598 777 3778 950 233 2889 6 299 390 7878-370 7722 326 424 7022 426 556 9233 696 908 5 06 433 24000 7 34 447 85-424 8344 37 486 7578 486 637 9978 793 039 6333 256 644 25889 8 383 503 900-478 8922 47 547 8 546 77 0667 89 67 7444 4 856 27667 9 426 560 9656-532 9467 462 609 8600 606 798 333 989 300 8444 567 2067 29333 0 467 67 078-586 9978 508 670 9067 666 878 889 087 433 9444 722 2278 3000 2 55 729-692 0889 599 793 9922 784 039 3 278 689 2333 2033 2689 33889 4 634 842 2000-800 778 690 96 0722 904 89 4 467 956 23000 2344 3 36667 6 78 954 2889-907 2667 78 039 444 023 356 5 667 22 24667 2656 3522 39 8 802 068 3667-04 3444 872 56 2 33 5 6000 856 2478 26 2967 3944 4556 20 887 78 4444-22 4 963 278 2778 256 678 6889 2056 2744 27556 3278 4367 43778 22 97 289 5-222 4778 056 400 3444 378 833 7667 2256 3000 28889 3589 4778 45889 24 056 400 5778-333 5444 44 522 4000 500 2000 8444 2444 3267 30 3900 5200 48000 26 33 5 6444-433 6 233 644 4667 622 256 9222 2644 3533 3444 42 56 49889 28 222 622 7000-544 6667 322 767 5 744 2322 20000 2844 3789 32556 4522 6033 5778 30 300 744 7667-656 7333 422 889 5667 867 2478 20667 3044 4056 33667 4844 6456 53556 32 389 856 8222-767 7889 5 20 6222 989 2644 2333 3244 4322 34778 556 6867 55333 34-967 8778-867 8444-233 6667-2800 22000-4578 35889-7289 57 36-2078 9333-978 9000-2267 7222-2967 22667-4844 36889-7700 58778 38-289 9889-2078 9444-2389 7667-322 23222-5 38000-822 60333 40-2300 20333-289 9889-25 8-3289 23889-5367 38889-8544 6889 Pö = set pressure Acc. to applied standards (RN78 5..2) the value above shall be multiplied by safety factor 0,9. Saturated m in kg/h. Air in Nm 3 /h (free air) at 0 o C and atmospheric pressure 03 mbar(a). Water in kg/h at 20 o C. Capacities are given for 0% pressure increasing of set pressure. Contact Armatec to dimensioning of other fluids etc. Rätten till ändringar utan föregående meddelande förbehålls. Armatec ansvarar inte för eventuella tryckfel eller missförstånd. Dokumenten får kopieras endast i sin helhet. Edition 2, 2008-0-5 Page 4 (6)
AT 450, 45, 459, 4520, Dimensioning DN65-50 DN 65 80 00 25 50 Seat 37mm 46mm 60mm 74mm 92mm Pö bar 0,2 37 62 8322 2 250 2889 359 425 2889 547 647 33333 844 00 5444 0,5 288 353 778 446 546 8222 758 928 30889 44 4 47 778 278 72778 450 564 5889 694 873 24667 78 477 4889 789 2256 63778 2778 3489 98556 2 75 957 22556 56 478 34778 967 25 59222 3000 3822 90 4644 59 3888 9 3 06 300 27556 567 20 42667 2667 3422 72556 4056 52 033 3 6278 8067 7 4 289 667 3889 989 2578 49222 3389 4388 83778 556 6667 2777 8 7978 03 9666 7 5 544 2000 35667 2389 300 55 4056 5277 93667 678 8033 4222 2 9556 2333 22000 0 6 800 2344 39000 2778 3622 60333 4733 677 0266 7 7200 9389 5555 6 4444 24 7 2044 2689 42 367 456 65 5400 7066 088 9 82 0756 6888 9 2667 6556 26 8 2300 3022 45 3556 4678 69667 6056 7966 888 9 9222 2 8000 0 4222 8667 27888 9 9 2556 3367 47778 3944 5200 73889 6722 8855 2555 6 0233 3444 9 5778 20778 29555 6 0 28 3700 50333 4344 5733 77889 7389 9744 3222 2 222 4778 20 7333 22889 3 2 33 4389 55222 522 6778 85333 87 444 4555 6 3222 7556 22 20444 27 34 4 4322 5067 59667 5900 7833 92 0044 3222 5666 7 5222 20222 23888 9 23556 3333 36888 9 6 4822 5744 63778 6678 8878 98556 333 5 6777 8 7222 23000 25444 4 26667 35444 39444 4 8 5333 6422 67556 7456 9933 0444 4 2667 6888 7777 8 9222 25667 27000 0 29889 40222 4777 8 20 5844 700 7222 8244 0989 0 4000 8666 8777 8 2333 28333 28555 6 - - - 22 6344 7789 74778 9033 2000 555 6 5333 20444 9666 7 23333 3 29888 9 - - - 24 6856 8467 78000 98 3000 2 6667 22222 20555 6 25333 33778 3222 2 - - - 26 7367 944 8222 0600 4 2555 6 8000 23999 2333 3 - - - - - - 28 7889 9822 84333 333 5 3000 0 9333 25777 22222 2 - - - - - - 30 8400 0500 87222 2 6222 3444 4 20667 27555 23000 0 - - - - - - 32-90 2889 7222 3888 9 22000 29333 23666 7 - - - - - - 34-778 92889-8333 4333 3-3666 24444 4 - - - - - - 36 - - - - 9667 4777 8-33444 25 - - - - - - 38 - - - - 20667 5222 2 - - - - - - - - - 40 - - - - 2778 5555 6 - - - - - - - - - Pö = set pressure Acc. to applied standards (RN78 5..2) the value above shall be multiplied by safety factor 0,9. Saturated m in kg/h. Air in Nm 3 /h (free air) at 0 o C and atmospheric pressure 03 mbar(a). Water in kg/h at 20 o C. Capacities are given for 0% pressure increasing of set pressure. Contact Armatec to dimensioning of other fluids etc. Accessories and Options Test Gag for blocking the lift. Lift restriction. Soft sealing O-ring of Kalrez (FFKM) C for temperature range 0-250 o C. Series AT 4575 is available of G-X6CrNi8.0. Heating jacket. Edition 2, 2008-0-5 Page 5 (6)
AT 450, 45, 459, 4520, Proportional opening characteristic series AT 452-4574. With stainless bellows series AT 4522-4578. Installation Conn. Flanges drilled acc. to AT 450/AT 45 AT 459/AT 4520/AT 4575/AT 4576 Inlet SS 335-PN6 SS 335-PN 40 Outlet SS 335-PN6 SS 335-PN 40 See separate installation instruction. The valve shall be mounted with bonnet in vertical position and straight upwards. Maintenance and Spare parts See separate installation and maintenance instruction. Marking Manufacturer, Armatec article number, DN, PN, CE, material and flow arrow. TÜV approval label with manufacturer fig. no. 433 mounted on body. Set pressure is punched on outlet flange and TÜV label. How to order Metal to metal sealed safety relief valves Example: AT 450-4-5,0-25 AT 450-4 -5,0-25 Fig. no. Design Set pressure (bar) DN AT 450=cast iron -2=gas tight cap AT 459=steel -4=gas tight lever AT 4575=stainless steel How to order Soft sealing safety relief valve Example: AT 45D4-5,0-25 AT 45 D 4-5,0-25 Fig. no. O-ring Design Set pressure (bar) DN AT 45=cast iron D=EPDM 2=gas tight cap AT 4520=steel L=Viton 4=gas tight lever AT 4576=stainless steel K=Neoprene N=Nitrile Rätten till ändringar utan föregående meddelande förbehålls. Armatec ansvarar inte för eventuella tryckfel eller missförstånd. Dokumenten får kopieras endast i sin helhet. Edition 2, 2008-0-5 Page 6 (6)