Materials: Type Brass: valve body: Red bronze (2-1/2" to 3": brass), seat sealing: PTFE, spindle seal: NBR, control cylinder: brass / aluminium, spindle: Stainless steel, seals: NBR Type 1.4408: valve body: 1.4408, valve internal parts: 1.4301, seat and spindle seal: PTFE, control cylinder: Nickel-plated brass / aluminium, spindle: Stainless steel, seals: FKM
Temperature range: -20°C to max. +85°C (Type 1.4408: -40°C to max. +200°C)
Control pressure: 4 to 10 bar (6 bar optimum), control connection: G 1/8"
Flow direction: Closes with media flow (not recommended for liquids with high flow velocity). If necessary, use the -GS option to close against the media flow.
Optional: PTFE spindle seal (up to 200°C) -PTFE**, Version closes against the medium stream (for use with liquids), please ask about working pressures. -GS, control cylinder made of stainless steel 1.4581 with FKM seals -2A***
*Aluminium actuator, **Only for valves made of red bronze or brass, ***Control connection: G 1/4"
All data are to be understood as non-binding reference values! We do not assume liability for any data selection not confirmed in writing. Unless otherwise specified, pressure values refer to liquids from Group II at +20°C.