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"
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