To reduce the required manual effort applied or to minimize the pressure shocks a manual gearbox is preffered. A gearbox allows greater ease of operation and gives a better protection against system damage caused by waterhammer due to quick closing. For regulating valves with a gearbox the system can be properly balanced by fine manual control. Casing materials are cast aluminium, cast iron, ductile iron or stainless steel. The available operating devices for gearbox are handwheels, tee caps for buried service or chainwheels for overhead installations.
Type 232
Suitable for general industrial applications
light weight cast aluminium housing
Stainless steel input shaft
Up to 500Nm output torque
Powder epoxy finish
IP65 enclosure
Type X
Suitable for general industrial applications
Light weight cast aluminium housing
Stainless steel input shaft
Up to 600Nm output torque
Powder epoxy finish
IP67 enclosure
Type AB
Suitable for industrial applications
Cast iron housing, ductile iron optional
Protected steel input shaft, stainless steel optional
Up to 32.000Nm output torque
Polyurethane coating
IP67 enclosure
Type Q
Suitable for industrial applications
Cast iron housing, ductile iron optional
Stainless steel input shaft
Up to 70.000Nm output torque
Powder epoxy finish
IP68 enclosure
Type ABSS
Suitable for industrial applications
Stainless steel housing
Stainless steel input shaft
Up to 70.000Nm output torque
IP68 enclosure
More information
Type QSS
Suitable for industrial applications
Stainless steel housing
Stainless steel input shaft, alubronze quadrant
Up to 6.500Nm output torque
IP68 enclosure
More information
Type GQB
Suitable for industrial applications
cast iron housing, ductile iron optional
Thermo hardened power drive components
up to 675.000Nm output torque
Double layer powder epoxy
IP68 enclosure
