Type: D481: Butterfly valve, pneumatically operated
DN: 50: DN 50
Body configuration: L: Flange-mounted version (Lug), length FTF EN 558 series 20
Operating pressure: 3: 16 bar
Connection type: 3: PN 16 / flange EN 1092, face-to-face dimension FTF EN 558 series 20
Housing material: 2: EN-GJS-400-15 (GGG-40), epoxy coated 120 µm
Disc material: E: EN-GJS-400-15 (GGG-40), epoxy coated
Shaft material: 1: AISI 420 / 1.4021
Shut-off seal material: E: EPDM
Liner fixing: L: Seat loose
Control function: 1: Normally closed (NC)
Actuator version: AU08KC: Actuator, pneumatic, single acting, clockwise rotation, spring closing, ASR0080US14F05/07S17S14
Operator particulars: 0: Anodized aluminium
Item number: 88355293 D481 50L332E1EL1 AU08KC0

For more information please see the document here: https://drive.google.com/file/d/1sTH5p5WqoGuLnVi58z7HX5P8EN3uRDVO/view?usp=sharing