The Parker CPI / A-LOK Socket Weld Elbow (ZEBW / ZELW) is a right-angle elbow with a CPI / A-LOK tube connection and a tubing socket weld connection. It comes in 8 size combinations with tube outer diameters from 1/8" to 1". CPI uses a single ferrule and A-LOK a double ferrule.
| Type | Socket weld elbow: CPI / A-LOK tube connection and tubing socket weld connection |
| Part Numbers | CPI 2-2 ZEBW, A-LOK 2-2 ZELW ~ CPI 16-16 ZEBW, A-LOK 16-16 ZELW |
| Size Numbers | Tube 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) | 2-2 ZEBW (2-2 ZELW): tube 1/8" / 3-3 ZEBW (3-3 ZELW): tube 3/16" / 4-4 ZEBW (4-4 ZELW): tube 1/4" / 6-6 ZEBW (6-6 ZELW): tube 3/8" / 8-8 ZEBW (8-8 ZELW): tube 1/2" / 10-10 ZEBW (10-10 ZELW): tube 5/8" / 12-12 ZEBW (12-12 ZELW): tube 3/4" / 16-16 ZEBW (16-16 ZELW): tube 1" |