The Parker CPI / A-LOK Port Connector (ZPC / PC) is a port connector with a tube stub end and a machined ferrule end (T2). It comes in 16 size combinations with tube outer diameters from 1/16" to 1".


| Type | Port connector: tube stub end and machined ferrule end (T2) |
| Part Numbers | CPI 1-1 ZPC, A-LOK 1PC1 ~ CPI 16-16 ZPC, A-LOK 16PC16 |
| Size Numbers | Tube size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8) |
| 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 |
| Tube Stub End Assembly | Add -Z6 to the part number to have the nut and ferrules assembled on the tube stub end |
| Grooving | The tube stub is pre-grooved as standard (sizes 1, 2 and 3 are not grooved) |
| Machined Ferrule End | The machined ferrule end (T2) needs only 1/4 turn from finger tight to assemble |
| Sizes (inches): tube O.D. by CPI Part Number (A-LOK Part Number) | 1-1 ZPC (1PC1): tube 1/16" / 1-2 ZPC (1PC2): tube 1/16" x 1/8" / 1-4 ZPC (1PC4): tube 1/16" x 1/4" / 2-2 ZPC (2PC2): tube 1/8" / 2-4 ZPC (2PC4): tube 1/8" x 1/4" / 2-6 ZPC (2PC6): tube 1/8" x 3/8" / 3-3 ZPC (3PC3): tube 3/16" / 4-4 ZPC (4PC4): tube 1/4" / 4-6 ZPC (4PC6): tube 1/4" x 3/8" / 4-8 ZPC (4PC8): tube 1/4" x 1/2" / 6-6 ZPC (6PC6): tube 3/8" / 6-8 ZPC (6PC8): tube 3/8" x 1/2" / 8-8 ZPC (8PC8): tube 1/2" / 8-12 ZPC (8PC12): tube 1/2" x 3/4" / 12-12 ZPC (12PC12): tube 3/4" / 16-16 ZPC (16PC16): tube 1" |