Castair 3/8"x3/8" In-Tank Check Valve Compression Tube Fitting Inlet / NPT Outlet CTD3838
The Castair CTD3838 is a 3/8" x 3/8" in-tank check valve with compression tube fitting inlet and 3/8" NPT male outlet. At $20.33, it's the smallest in the Castair CTD compression inlet series, for compressor configurations where both the discharge tube and tank connection are in the 3/8" size range. The compression inlet accepts 3/8" copper tubing; the NPT male outlet threads into the 3/8" tank bung. Rated 500 PSIG and 400 degrees F with a 1/8" unloader port — same ratings as every valve in the Castair in-tank check valve family.
Technical Specifications
- Part Number: CTD3838
- Inlet Connection: 3/8" Compression tube fitting
- Outlet Connection: 3/8" NPT Male
- Pressure Rating: 500 PSIG
- Temperature Rating: 400 degrees F
- Unloader Port: 1/8" side port
- Price: $20.33
- Manufacturer: Castair (Spicer, Minnesota)
When You Need CTD3838
- 3/8" copper discharge tubing from the compressor head
- Tank or manifold has a 3/8" NPT female connection
- Typical on smaller light commercial or contractor compressor configurations where 3/8" is used throughout the discharge circuit
CTD Series Complete Lineup
- CTD3838 — 3/8" comp x 3/8" NPT (this listing), $20.33
- CTD3812 — 3/8" comp x 1/2" NPT, $20.33
- CTD1212 — 1/2" comp x 1/2" NPT, $21.18
- CTD1238 — 1/2" comp x 3/8" comp, $25.41
- CTD1234 — 1/2" comp x 3/4" NPT, $29.65
- CTD3434 — 3/4" comp x 3/4" NPT, $29.65
- CTD3410 — 3/4" comp x 1" NPT, $46.59
Why Buy From Air Compressor Factory Direct?
We stock the full Castair check valve line from the smallest CTD3838 to the largest CTB112112. Wrong-size check valves are a common ordering mistake and easy to avoid with a quick phone call. Call us with your compressor model and we'll confirm the right valve before it ships.
- Free shipping on qualifying orders to the lower 48
- Free tech support — fitment verification by phone
- Full manufacturer warranty on all Castair products
Call 866-217-0063 for quick answers and help!
