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

• Lug & wafer type butterfly valves
• Double eccentric butterfly valve
• Concentric butterfly valves
• Gate valves
• Ball valves