Legris
Legris 3175 12 21 Male Connector 12mm 1/2in Trap PK10
Pack of ten push-fit male connectors joining 12 mm tube to 1/2 in BSPT thread, brass with nickel plating, rated to 290 psi and 175 °F
- TypeDrain Components
- MaterialHAWA
- ColorNickel Plated Brass
- Push-to-connect design speeds installation with 12 mm tube fit
- Male BSPT 1/2 in thread ensures secure pipe connection
- Nickel-plated C36000 brass resists corrosion for long service life
- Pre-applied thread sealant eliminates extra sealing steps
- Rated to 290 psi and 175 °F for reliable vacuum performance
Push-Fit Adapter for 12 mm Tube and 1/2 in BSPT
This Legris 3175 fitting joins a 12 mm push-to-connect tube to a 1/2 in male BSPT thread. The nickel-plated brass body uses HAWA material graded to C36000 and ships in a pack of ten. Pre-applied thread sealant is included on the BSPT side.
Suited for pneumatic or vacuum lines needing
Installers who require a tool-free tube connection on one end and a sealed taper thread on the other will find this part matches both the 12 mm outer diameter and 1/2 in pipe size. It is not intended for applications that exceed the stated pressure or temperature limits, nor for metric thread ports.
Maximum operating pressure of 290 psi at up to 175
The fitting is rated for 290 psi and a maximum operating temperature of 175 °F. Verify that the system pressure and media temperature stay within these figures before selecting this connector.
Highlights
- Push-to-connect design speeds installation with 12 mm tube fit
- Male BSPT 1/2 in thread ensures secure pipe connection
- Nickel-plated C36000 brass resists corrosion for long service life
- Pre-applied thread sealant eliminates extra sealing steps
- Rated to 290 psi and 175 °F for reliable vacuum performance
Specifications
| Type | Drain Components |
|---|---|
| Material | HAWA |
| Color | Nickel Plated Brass |
| Brand | Legris |
| Model | 3175 12 21 |
Questions about this item
What tube and pipe sizes does the 3175 12 21 connector accept?
The fitting joins a 12 mm push-to-connect tube on one side to a 1/2 in MBSPT pipe thread on the other.
How do I install the fitting without damaging the pre-applied sealant?
Push the 12 mm tube firmly into the collet until it seats, then thread the 1/2 in MBSPT end by hand before final tightening with a wrench.
When should I replace the nickel-plated brass connector in a vacuum line?
Replace if the brass body shows corrosion, the collet no longer grips the 12 mm tube, or the pre-applied thread sealant has dried out and leaks at 290 psi.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Taylor Made 12" x 18" Jolly Roger Novelty Flag 1818 marine electronic
- Accessories



