3700 / GEARBOX

Features

Has cast iron body; stem and sealing seat are made of stainless steel.
Lowering the minimum torque force allows the opening and closing of the valve by single operator.
While the open-close torque of the valve with gearbox decreases, the number of turns needed to open-close the valve increase.
Attention should be paid on the connection dimensions and gearbox ratio when selecting an actuator for the valve.
The DN dimensions and gearbox types mentioned on the table are given according to the general applications.
It is advised to receive support from FAF Valve technical staff while selecting gearboxes.
Most of the valves require an operator torque that can only be achieve with a gearbox. There are part turn and quart turn manual actuators.
Manual actuation is usually drove by handwheels. Valves whose access location makes difficult to operate on them can be drove by chain wheels.
For security, the driver can be out of the gearbox spigot.
Only authorized operators who bring the handwheel or wrench nut with them can operate the valve.

Scope of Application