LPS 1185:Issue 3:1993 Performance tests for Butterfly stop valves
BS EN ISO 4589-3:1996 Oxygen index at elevanted temperatures
LUL 2-01001-002:A1:2003 Oxygen index at elevanted temperatures
...LPS 1185:Issue 3:1993 Performance tests for Butterfly stop valves
BS EN ISO 4589-3:1996 Oxygen index at elevanted temperatures
LUL 2-01001-002:A1:2003 Oxygen index at elevanted temperatures
...