The Parker CPI / A-LOK NPT Female Run Tee (MBZ / FRT) is a tee with two tube connections and one NPT female thread, the thread being on one end of the run. It comes in 15 size combinations with tube outer diameters from 1/8" to 1". CPI uses a single ferrule and A-LOK a double ferrule.


| Type | NPT female run tee: two tube connections and one NPT female thread |
| Part Numbers | CPI 2-2-2 MBZ, A-LOK 2FRT2N ~ CPI 16-16-16 MBZ, A-LOK 16FRT16N |
| Thread | NPT |
| Size Numbers | Size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8, 1/4" thread = 4) |
| Connection Method | CPI: single ferrule / A-LOK: double ferrule |
| Material | 316 stainless steel (heat code traceable) is standard / Other materials: steel, brass, aluminum, nickel-copper, Hastelloy C, Alloy 600, titanium, 6Mo, Incoloy 625 and 825 |
| Material Codes | Material code added to the end of the part number after a hyphen: B brass / SS or 316 = 316 stainless steel / S steel / A aluminum / M Alloy 400 / HC Hastelloy C-276 / IN Alloy 600 / SS20 Carpenter 20 / 6MO 6Mo / 625 / 825 / T titanium |
| Sizes (inches): Tube O.D. and NPT Thread Size by CPI Part Number (A-LOK Part Number) | 2-2-2 MBZ (2FRT2N): tube 1/8" x NPT 1/8" / 3-2-3 MBZ (3FRT2N): tube 3/16" x NPT 1/8" / 4-2-4 MBZ (4FRT2N): tube 1/4" x NPT 1/8" / 4-4-4 MBZ (4FRT4N): tube 1/4" x NPT 1/4" / 5-2-5 MBZ (5FRT2N): tube 5/16" x NPT 1/8" / 6-4-6 MBZ (6FRT4N): tube 3/8" x NPT 1/4" / 8-4-8 MBZ (8FRT4N): tube 1/2" x NPT 1/4" / 8-6-8 MBZ (8FRT6N): tube 1/2" x NPT 3/8" / 8-8-8 MBZ (8FRT8N): tube 1/2" x NPT 1/2" / 10-8-10 MBZ (10FRT8N): tube 5/8" x NPT 1/2" / 12-12-12 MBZ (12FRT12N): tube 3/4" x NPT 3/4" / 14-8-14 MBZ (14FRT8N): tube 7/8" x NPT 1/2" / 14-12-14 MBZ (14FRT12N): tube 7/8" x NPT 3/4" / 16-12-16 MBZ (16FRT12N): tube 1" x NPT 3/4" / 16-16-16 MBZ (16FRT16N): tube 1" x NPT 1" |