Local control panel is wall-mounted design made of sheet metal.This can be supplied with the following components
This is a field switch unit to operate actuator locally & designed to work with reversing starter.
This is an integral part of the actuator. This version consists of in-built features of Local Push Button Station and Local Control Panel with minimum configuration of:
Resistance transmitter of 100-235 (alternative values are also available) or a current transmitter with a unified signal of 4-20 mA. The maximum load resistance is 500 W. The supply voltage of the transmitter is 12 to 36 V D.C. Also available with non contact type position transmitter
This will indicate 0-100% opening of the valve in control room. Input to this position indicator will be either from actuator mounted potentiometer (distance less than 5 m) or from actuator mounted current transmitter i.e.4-20mA.
Travel & Torque Limit Switches are available in 1NO + 1NC as well as 2NO + 2NC contact configuration.
To prevent water condensation, actuator is fitted with an anti condensation heater called space heater; the latter can be connected to AC or DC voltage of 230 V.
Ohomic position transmitters are available in multiturn / single Turn pots with pot gears for require Ohomic output.
Thermostat can be provided in motor for protection against overload.
Sdtork Spur gear box units are designed with electric multiturn 3000-series actuators. The unit is suitable to operate rising or non rising stem valves. These units are efficient, reliable & simple in construction.
Sdtork worm gear box units are specially designed to operate quarter turn valves like Ball Valve, Butterfly Valve, Plug Valves & Dampers. Adjustable Mechanical stopper & position indicator is standard feature of WG gear Box
These gear box have completely enclosed construction. The main casing is designed to withstand the shock & vibration of the piping system.
Any automation solution should essentially take into account adaptation of new actuator to suit the existing valves, which invariably are with nonstandard mounting flanges. Hence the adaptor is to be designed to cater to the variety in valve mounting flange designs. Sdtork's special adaptor design solution fulfils all applications and all valve mounting flanges.