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Control systems Safety valves
Table 2 SVL488 flow capacity for air or normal cubic meters per hour (Nm 3 /h) at 0 °C and 1013 mbar and standard cubic feet per minute (SCFM) at 32 °F and 14.7 psi. (calculated in accordance with AD-MERKBLATT A2 and TRD 421)
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 air Nm 3 /h (SCFM)
1.0 (14.5)
386 (245) 625 (396) 852 (540) 1069 (678) 1287 (816) 1505 (954)
999 (633)
1545 (980)
2628 (1666) 4251 (2695) 5795 (3674) 7278 (6414) 8761 (5554) 10243 (6494) 11726 (7434) 13208 (8374) 13505 (8562) 14691 (9314) 16173 (10254) 16658 (10561)
3998 (2535) 6467 (4100) 8816 (5589) 11071 (7019) 13326 (8449) 15581 (9878) 17836 (11308) 20091 (12738) 20542 (13024) 22346 (14167) 24601 (15597) 25343 (16067)
6179 (3917) 9995 (6337) 13626 (8639) 17111 (10848) 20597 (13058) 24083 (15268) 27568 (17478) 31054 (19688) 31752 (20131)
2.0 (29)
1617 (1025) 2204 (1397) 2768 (1755) 3331 (2112) 3895 (2469) 4459 (2827) 5023 (3185) 5136 (3256) 5587 (3542) 6150 (3899) 6334 (4016) 7278 (4614) 8405 (5329) 8957 (5679) 9533 (6044)
2499 (1584) 3406 (2159) 4278 (2712) 5149 (3264) 6021 (3817) 6892 (4369) 7763 (4922) 7937 (5032) 8635 (5475) 9506 (6027) 9793 (6209) 11249 (7132) 12992 (8237) 14735 (9342)
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)
4.7 120
1723 (1092) 1941 (1231) 1985 (1258) 2159 (1369) 2377 (1507) 2451 (1554) 2812 (1783) 3248 (2059) 3466 (2197) 3684 (2336)
The product must not be used in this region.
TI-P315-03 CTLS Issue 12
Page 6 of 9
SVL488 Stainless Steel Sanitary Safety Valve
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