The Parker CPI / A-LOK Union Elbow (EBZ / EE) joins two fractional tubes of the same outer diameter at a right angle. 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 elbow: joins two tubes of the same outer diameter at a right angle |
| Part Numbers | CPI 1-1 EBZ, A-LOK 1EE1 ~ CPI 32-32 EBZ, A-LOK 32EE32 |
| 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 |
| Sizes (inches): Tube O.D. by CPI Part Number (A-LOK Part Number) | 1-1 EBZ (1EE1): tube O.D. 1/16" / 2-2 EBZ (2EE2): tube O.D. 1/8" / 3-3 EBZ (3EE3): tube O.D. 3/16" / 4-4 EBZ (4EE4): tube O.D. 1/4" / 5-5 EBZ (5EE5): tube O.D. 5/16" / 6-6 EBZ (6EE6): tube O.D. 3/8" / 8-8 EBZ (8EE8): tube O.D. 1/2" / 10-10 EBZ (10EE10): tube O.D. 5/8" / 12-12 EBZ (12EE12): tube O.D. 3/4" / 14-14 EBZ (14EE14): tube O.D. 7/8" / 16-16 EBZ (16EE16): tube O.D. 1" / 20-20 EBZ (20EE20): tube O.D. 1-1/4" / 24-24 EBZ (24EE24): tube O.D. 1-1/2" / 32-32 EBZ (32EE32): tube O.D. 2" |