Castair 1/2"x3/4" In-Tank Check Valve Compression Tube Fitting Inlet / NPT Outlet CTD1234
The Castair CTD1234 is an asymmetric in-tank check valve with 1/2" compression tube fitting inlet and 3/4" NPT male outlet. At $29.65, it's used when 1/2" copper discharge tubing runs from the compressor head to the check valve, which then threads into a 3/4" NPT tank bung. One valve body handles both the compression tube connection and the size step-up from 1/2" tubing to a 3/4" tank port. Rated 500 PSIG and 400 degrees F with a 1/8" unloader port.
Technical Specifications
- Part Number: CTD1234
- Inlet Connection: 1/2" Compression tube fitting
- Outlet Connection: 3/4" NPT Male
- Pressure Rating: 500 PSIG
- Temperature Rating: 400 degrees F
- Unloader Port: 1/8" side port
- Price: $29.65
- Manufacturer: Castair (Spicer, Minnesota)
When You Need CTD1234
- 1/2" copper discharge tubing exits the compressor head
- The tank or manifold connection is 3/4" NPT female
- One valve body handles both the tube-to-thread transition and the size step-up
CTD Series Full Reference
- CTD3838 — 3/8" comp x 3/8" NPT, $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 (this listing), $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 and can confirm the right part for your discharge tube size and tank connection 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!
