The Castair RDDRKS is an accessory or repair kit set for Castair RDD series refrigerated compressed air dryers. The RKS suffix indicates this is likely a repair kit set — a bundled collection of service components for maintaining or restoring an RDD series dryer. Repair kit sets for refrigerated dryers typically include the high-wear components that are addressed during a dryer overhaul: O-rings, gaskets, drain valve components, and sometimes solenoid parts, bundled together so a complete service can be performed in a single repair session.
If your RDD series dryer is due for a major service interval, or if you have had multiple component failures and want to refresh all wear items at once, the RDDRKS may be the appropriate kit. A single repair kit set is more cost-effective than sourcing individual components separately and ensures all service items are replaced at the same time — avoiding a follow-up repair shortly after the initial service. Call 866-217-0063 to confirm the full contents of the RDDRKS and verify it covers your specific RDD model.
When to Use a Repair Kit Set
- Major service interval: After 3–5 years of operation, or per the manufacturer's recommended service schedule
- Multiple component failures: When a dryer has had a drain failure, an O-ring leak, and a solenoid issue in close succession — address everything in one repair
- After refrigerant service: Any time the refrigerant circuit is opened, replace all seals and gaskets in the affected area
- Pre-winter maintenance: In cold climates, inspect and replace wear components before winter to prevent freeze-related failures
- Pre-purchase of a used dryer: If you are putting a used RDD series dryer back into service, a repair kit set refreshes all wear items before the unit goes back online
Compatible Equipment
- Castair RDD series refrigerated compressed air dryers (RDD40, RDD50, RDD80 series)
- Confirm compatibility with your specific RDD model before ordering — 866-217-0063
What's in the Box
- Castair RDDRKS repair kit set for RDD series refrigerated dryer
Full contents list available by contacting us. Exact components vary by kit revision and the specific RDD model this kit is designed for. Do not order without confirming your dryer model.
Technical Specifications
- Part Number: RDDRKS
- Manufacturer: Castair (Cast Air, Inc.)
- Application: Castair RDD series refrigerated compressed air dryers
- Component type: Repair kit set (O-rings, gaskets, and/or additional service components)
- Full contents: Contact us for complete item list — 866-217-0063
Why Buy From Air Compressor Factory Direct?
We carry Castair service parts and repair kits and can confirm the RDDRKS contents and compatibility before you order. If you are planning a full dryer overhaul, we can also advise on which additional parts to have on hand. Free shipping on qualifying orders, free pre-sale technical support, genuine Castair parts with full manufacturer warranty.
Call 866-217-0063 for quick answers and help!
