The Castair Right From The Start Kit RFS002D is the complete commissioning package for 15 HP and 20 HP Duplex and Tandem piston air compressors. When you put a new dual-head Castair machine into service, this kit gives you every consumable and connection component needed to do it correctly — the right break-in oil in the right quantity, vibration isolation pads sized for a duplex footprint, a properly rated tank shut-off valve, a stainless flex hose to protect your shop piping, and inlet air filter elements. Buying these components as a kit saves you 10% versus purchasing each item separately. More importantly, it eliminates the guesswork on sizing.
What the Kit Covers — and Why Each Component Matters
Castair engineered the RFS002D specifically for two-pump configurations. Every item in the kit is sized for 15–20 HP duplex operation, not pulled from a generic accessory list.
- GA30W Cast-Lube 30-Weight Oil — 2 Gallons (1 per pump head): Castair's factory-specified break-in oil. Semi-synthetic formula, high temperature rated, low carbon, non-foaming. Your new compressor must have this oil changed within the first eight hours of operation — the initial break-in interval is critical for seating rings and pump components. Using a standard motor oil or cheap compressor oil during break-in can cause carbon buildup that voids your warranty. Two gallons cover both pump crankcases in a duplex or tandem setup.
- VP100 Rubber Vibration Pads — 4 Pads (4"×4"×1"): Duplex compressors run two pump heads alternating or together, generating more vibration than a single-head unit. Four VP100 pads isolate the compressor base from the floor, reducing transmitted vibration to your piping and structure. Quiet operation and no cracked fittings from resonance fatigue over time.
- BV100 Full-Flow Ball Valve — 1" NPT: Brass/stainless steel full-flow ball valve for reliable tank shut-off. The 1" sizing handles the CFM flow requirements of 15–20 HP class machines without creating a restriction. A quality ball valve here gives you a clean, positive shut-off for service and maintenance.
- VA100 Stainless Steel Flex Hose — 1" NPT × 18": Vibration-absorbing flexible connection between your compressor discharge and shop piping. This is not optional — without a flex connection, compressor vibration transfers directly into rigid pipe fittings and causes fatigue cracks over months of operation. Stainless construction handles both the heat coming off the discharge side and the pressure of the system without degrading.
- 16D Air Filter Elements — 4 Elements: Inlet air filter elements for the 16D filter housings used on these pump configurations. Clean inlet air is essential for pump longevity — dirty filters starve the pump, raise operating temperatures, and accelerate wear. Four elements give you a full service interval supply for both pump heads.
Which Kit Does Your Compressor Need?
- RFS001D — 10 HP Duplex/Tandem: 2 gallons oil, 4 VP100 pads, BV75 (3/4") valve, VA075 (3/4") flex hose, 4× 16D elements
- RFS002D (this kit) — 15 & 20 HP Duplex/Tandem: 2 gallons oil, 4 VP100 pads, BV100 (1") valve, VA100 (1") flex hose, 4× 16D elements
- RFS003D — 25 & 30 HP Duplex/Tandem: 4 gallons oil, 4 VP100 pads, BV114 (1-1/4") valve, VA125 (1-1/4") flex hose, 4× 16D elements
For single-head industrial/commercial piston compressors (A8, C1, C2, C3), use the RFS001 or RFS002 (C3) kit instead — those are configured for single-pump oil quantities and hardware sizing.
What's in the Box
- 2 × GA30W Cast-Lube 30-weight semi-synthetic oil, 1 gallon each
- 4 × VP100 rubber vibration isolation pads, 4"×4"×1"
- 1 × BV100 full-flow ball valve, 1" NPT, brass/stainless steel
- 1 × VA100 stainless steel flex hose, 1" NPT × 18" length
- 4 × 16D inlet air filter elements
Technical Specifications
- Part Number: RFS002D
- Compatible Compressors: Castair 15 HP and 20 HP Duplex and Tandem piston models
- Oil: GA30W Cast-Lube, 30-weight semi-synthetic, 2 gallons total
- Vibration Pads: VP100 — 4"×4"×1" rubber, qty 4
- Ball Valve: BV100 — 1" NPT full-flow, brass/stainless steel
- Flex Hose: VA100 — 1" NPT × 18" stainless steel
- Air Filter Elements: 16D — qty 4
- Kit Savings: 10% vs. buying components separately
Why Buy From OEM Diagnostic Tools?
We have been supplying Castair compressor accessories since 2016. We know this product line and can confirm the correct kit for your specific compressor before you order. Free shipping on qualifying orders. Free tech support at 866-217-0063. Full Castair manufacturer warranty on everything we sell. If you are unsure whether the RFS002D fits your machine, call us first — we will verify compatibility and get you the right kit.
Call 866-217-0063 for quick answers and help!
