The Parker CPI / A-LOK Column End Fitting - Low Internal Volume with Frit (Z2HCZ7 / Z2HLZ7) is a column end fitting with a frit and an inverted 1/16" end (T2), for low internal volume use. It comes in 3 size combinations with tube outer diameters from 1/16" to 3/8".
| Type | Column end fitting: low internal volume, with frit |
| Part Numbers | CPI 2-1 Z2HCZ7, A-LOK 2-1 Z2HLZ7 ~ CPI 6-1 Z2HCZ7, A-LOK 6-1 Z2HLZ7 |
| 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 |
| Features | Inverted 1/16" end / Can be used as a low volume final filter |
| Frit Designator | The frit is specified by a micron dash number added to the part number: -1 = 0.5 µ / -2 = 2 µ / -3 = 5 µ / -4 = 10 µ (example: 4-1Z2HLZ7-2*-SS is a 2 µ frit for a 1/4" O.D. column; * marks the micron dash number) |
| Sizes (inches): T1 tube O.D., T2 tube O.D., internal volume by CPI Part Number (A-LOK Part Number) | 2-1 Z2HCZ7 (2-1 Z2HLZ7): T1 tube O.D. 1/8", T2 tube O.D. 1/16", internal volume 5.4 × 10⁻⁴ cc / 4-1 Z2HCZ7 (4-1 Z2HLZ7): T1 tube O.D. 1/4", T2 tube O.D. 1/16", internal volume 1.2 × 10⁻³ cc / 6-1 Z2HCZ7 (6-1 Z2HLZ7): T1 tube O.D. 3/8", T2 tube O.D. 1/16", internal volume 3.8 × 10⁻³ cc |