The Parker CPI / A-LOK Union Cross (KBZ / ECR) joins four fractional tubes of the same outer diameter in a cross. It comes in 10 size combinations with tube outer diameters from 1/8" to 1". CPI uses a single ferrule and A-LOK a double ferrule.
| Type | Union cross: joins four tubes of the same outer diameter in a cross |
| Part Numbers | CPI 2 KBZ, A-LOK 2ECR2 ~ CPI 16 KBZ, A-LOK 16ECR16 |
| 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) | 2 KBZ (2ECR2): tube O.D. 1/8" / 3 KBZ (3ECR3): tube O.D. 3/16" / 4 KBZ (4ECR4): tube O.D. 1/4" / 5 KBZ (5ECR5): tube O.D. 5/16" / 6 KBZ (6ECR6): tube O.D. 3/8" / 8 KBZ (8ECR8): tube O.D. 1/2" / 10 KBZ (10ECR10): tube O.D. 5/8" / 12 KBZ (12ECR12): tube O.D. 3/4" / 14 KBZ (14ECR14): tube O.D. 7/8" / 16 KBZ (16ECR16): tube O.D. 1" |