Material specification
Body: carbon steel (steel 20), alloy steel (09G2S) or stainless steel (AISI 321H)
Stem: stainless steel (AISI 420)
Ball: stainless steel (AISI 420)
DN 15-32: AISI 420; DN 40-65: AISI 304; DN 80-700: AISI 409;
Stem sealing: FVMQ
Stem sealing/washer: PTFE+C
Ball seal: PTFE+C with additional sealing by FVMQ
Operation
DN 15 - 200: lever - painted carbon steel with polymer end
DN 150 - 200: manual gearbox with worm gear recommended
DN 250 - 600: manual gearbox on default
Flange
Connection dimension in accordance with GOST 12815-80 on default / EN (DIN) on request