Control systems Safety valves
4
Table 3 SVL488 flow capacity for water in kilogrammes per hour (kg/h) at 20 °C and pounds per hour (lb/h) at 68 °F. (calcualted in accordance with AD-MERKBLATT A2 and TRD 421 at 10% overpressure) Derated coefficient of discharge (Kdr) = 0.52
Valve size DN in/out
DN25/40 (1"/1½") 416 (0.64 in²)
DN40/65 (1½"/2½") 1 075 (1.67 in²)
DN50/80 (2"/3") 1 662 (2.58 in²)
DN65/100 (2½"/4") 2 827 (4.38 in²)
DN80/125 (3"/5") 4 301 (6.67 in²)
DN100/150 (4"/6")
Flow area (mm²)
6 648 (10.3 in²)
Set pressure (bar g)
Flow capacity for water kg/h (lb/h)
1.0 (14.5)
9970 (21980) 14100 (31085) 17300 (38140) 19900 (43872) 22300 (49163) 24400 (53793) 26400 (58202) 28200 (62170) 28500 (62832) 29900 (65918) 31500 (69446) 32000 (70548) 34600 (76280) 37300 (82232) 38600 (85098) 39900 (87964)
25800 (56879) 36500 (80469) 44700 (98547) 51600 (113759) 57700 (127207) 63200 (139332) 68300 (150576) 73000 (160937) 73900 (162922) 77400 (170638) 81600 (179897) 82700 (182322) 89400 (197093) 96600 (212967) 99700 (219801) 103000 (227076)
39900 (87964) 56400 (124341) 69100 (152339) 79800 (175929) 89200 (196652) 97700 (215392) 106000 (233690) 113000 (249122) 114000 (251327) 120000 (264555) 126000 (277782) 128000 (282192) 138000 (304238) 149000 (328489) 154000 (339512)
67900 (149694) 96000 (211644) 118000 (260145) 136000 (299829) 152000 (335103) 166000 (365967) 180000 (369832) 192000 (423288) 194000 (427697) 204000 (449743) 215000 (473994) 218000 (480608)
103000 (227076) 126000 (277782) 179000 (394627) 206000 (454152) 231000 (509268) 253000 (557770) 273000 (601862) 292000 (643750) 292000 (643750) 310000 (683433) 326000 (718707) 334000 (736343)
160000 (352740) 226000 (498245) 276000 (608476) 319000 (703275) 357000 (787050) 391000 (862007) 422000 (930351) 451000 (994285) 458000 (1009717)
2.0 (29)
3.0 (43.5)
4.0 (58)
5.0 (72.5) 6.0 (87.0) 7.0 (102) 8.0 (116) 8.2 (119) 9.0 (131) 10.0 (145) 10.34 (150) 12.0 (174) 14.0 (203) 15.0 (218) 16.0 (232)
4.7 121
The product must not be used in this region.
TI-P315-03 CTLS Issue 12
Page 7 of 9
SVL488 Stainless Steel Sanitary Safety Valve
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