Actuator Model
DC : Single spring diaphragm actuator, direct acting (DC-20 / DC-21 / DC-022 / DC-23 / DC-24)
RC : Single spring diaphragm actuator, reverse acting (RC-20 / RC-21 / RC-022 / RC-23 / RC-24)
The RC series of actuators represent a significant design advance in the diaphragm actuator range. The
actuators have been developed to be field reversible which means that the fail position of the actuator can
be changed in the field rather than having to completely replace the actuator. All actuators in the RA series
actuator designs have been developed to maximize the number of interchangeable parts ultimately
resulting in an overall inventory reduction for the end user. The actuators can also be fitted with a number
of additional design features which can be specified at the time of order. These features include manual
handwheels, limit stops or combinations of both. The simplicity of the actuator design means that actuators
can be maintained in the field without the need for removal from the valve.
All actuators in the UNIFLOW CONTROLS range are produced in the same range of travels and bonnet
mount diameters and are interchangeable size-for-size on any UNIFLOW CONTROLS control valve
Features
Fail reversible
Single spring
Cast carbon steel yoke
Easily maintained
No welded components
High stability
Mechanical travel indicator
| Acting | Single-Acting |
| Limit Switch | Yes |
| Position Indicator | Yes |
| Motion | Linear Motion |
| Body Material | Carbon Steel , Stainless Steel |
| Design Standards | ASME , ISO |
| Country | India |
| Failsafe | Close at No Control , Close at No Power , Open at No Control , Open at No Power , Self Locking |
| Type | Pneumatic Actuator |
| Pressure | Min: 0 Bar ( 0 psi ) Max: 300 Bar ( 4,351 psi ) |
| Mountings | Front Foot Flange |
| Actuator Technology | Spring(s) and Diaphragm |
| Actuator Type | Pneumatic Actuators |
| Stroke | Min: 0.551 inch ( 14 mm ) Max: 4.331 inch ( 110 mm ) |
| Temperature | Min: -25 C ( -13 F ) Max: 400 C ( 752 F ) |
The UNIFLOW CONTROLS range of diaphragm actuators are designed to suit the majority of control
valve applications. The actuator offers an economical solution to valve control. Actuators are suitable for
modulating applications when used with a suitable control device such as a valve positioner. Alternatively
they can be used for ON/OFF applications.
