Triple offset butterfly valves 501M series.  
Size range 2.1/2” ÷ 56” (DN65 ÷ DN1400)
Type Wafer, Lug, Double flanged , Butt welding
Design ASME B16.34, EN 12516-2, EN 593
Face to face API 609, EN 558, ANSI B16.10
Operating temperature -196°C + 815°C (-320 °F ÷ +1500 °F)
Pressure ratings ASME class 150, 300, 600, PN10 ÷ PN160 – bidirectional
Flange drilling ASME B16.5, ASME B16.47 series A, EN1092-1
Testing API 598, API 6D, EN 12266-1
Leakage class Rate “A” - No leakage – according to EN 12266-1
Standard materials Body: Carbon Steel, Stainles Steel, Al/Bronze
Body seat: Stellite® (overlay welding)
Disc: Carbon Steel, Stainles Steel, Al/Bronze
Stem: AISI 420, AISI 630, NITRONIC 50
Applications High pressure, High temperature, Critical service, Cryogenic Service
Certifications 97/23/CE PED, 94/9/CE ATEX, Fire Safe API 607, ISO 10497, API 6FA
CU TR 10 – CU TR 32, GOST-R