The Castair RDDT2-2 is a timer and control accessory for Castair refrigerated compressed air dryers. The T2-2 designation indicates a two-stage or dual-function timer control — either a control module that manages two separate drain outputs, or a timer with two independently adjustable settings for drain interval and drain duration. This type of control is used in refrigerated dryer installations where the standard single-output demand drain is being supplemented or replaced with a more configurable timed drain system.
Dual-function timer controls are particularly useful in installations where two separate drain points need to be managed (for example, a dryer with both a sump drain and a separator drain), or where you need independent control over the on-time and off-time of the drain cycle. Call us at 866-217-0063 to confirm the exact function and configuration of the RDDT2-2 for your specific dryer installation.
Applications for the RDDT2-2
- Dual-drain installations: Some larger dryers and filter/separator combinations have two separate drain points that benefit from coordinated, independent timer control
- Independent on/off timing: T2-2 style controls allow separate adjustment of the drain open interval (how long the drain stays open per cycle) and the drain closed interval (time between cycles) — important for optimizing air consumption in high-condensate environments
- Replacement of failed demand drain sensors: When the primary demand-based drain has failed and needs to be bypassed, a timer control provides reliable drain function until the sensor is replaced
- High-condensate shop environments: In shops with high ambient humidity or where inlet air is particularly moist, predictable timed drain control ensures condensate is reliably ejected
Compatible Equipment
- Castair refrigerated compressed air dryers (RDD series and other compatible models)
- Confirm exact compatibility with your dryer model before ordering — 866-217-0063
What's in the Box
- Castair RDDT2-2 timer/control accessory
Wiring diagram, timing adjustment instructions, and installation details available by contacting us. Confirm your dryer's drain circuit voltage before ordering this control.
Technical Specifications
- Part Number: RDDT2-2
- Manufacturer: Castair (Cast Air, Inc.)
- Application: Castair refrigerated compressed air dryers
- Component type: Dual-function drain timer/control
- Outputs: 2 independently controlled drain circuits (confirm with us)
- Electrical specifications: Contact us for voltage, current rating, and wiring requirements — 866-217-0063
Why Buy From Air Compressor Factory Direct?
We specialize in Castair compressed air equipment and accessories. If you are building a custom drain control system or replacing a failed drain control module, we can help you confirm the right part before ordering. Free shipping on qualifying orders, free pre-sale technical support, genuine Castair parts.
Call 866-217-0063 for quick answers and help!
