The Parker CPI / A-LOK Union Tee (JBZ / ET) joins three fractional tubes of the same outer diameter in a tee. It comes in 14 size combinations with tube outer diameters from 1/16" to 2". CPI uses a single ferrule and A-LOK a double ferrule.


| Type | Union tee: joins three tubes of the same outer diameter in a tee |
| Part Numbers | CPI 1-1-1 JBZ, A-LOK 1ET1 ~ CPI 32-32-32 JBZ, A-LOK 32ET32 |
| Size Numbers | Size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8) |
| 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 |
| Note | Sizes 20, 24, 32 require additional lubrication prior to assembly |
| Sizes (inches): Tube O.D. by CPI Part Number (A-LOK Part Number) | 1-1-1 JBZ (1ET1): tube O.D. 1/16" / 2-2-2 JBZ (2ET2): tube O.D. 1/8" / 3-3-3 JBZ (3ET3): tube O.D. 3/16" / 4-4-4 JBZ (4ET4): tube O.D. 1/4" / 5-5-5 JBZ (5ET5): tube O.D. 5/16" / 6-6-6 JBZ (6ET6): tube O.D. 3/8" / 8-8-8 JBZ (8ET8): tube O.D. 1/2" / 10-10-10 JBZ (10ET10): tube O.D. 5/8" / 12-12-12 JBZ (12ET12): tube O.D. 3/4" / 14-14-14 JBZ (14ET14): tube O.D. 7/8" / 16-16-16 JBZ (16ET16): tube O.D. 1" / 20-20-20 JBZ (20ET20): tube O.D. 1-1/4" / 24-24-24 JBZ (24ET24): tube O.D. 1-1/2" / 32-32-32 JBZ (32ET32): tube O.D. 2" |