The Parker CPI / A-LOK Column End Fitting - Low Internal Volume without Frit (ZHCZ7 / ZHLZ7) is a column end fitting without a frit and with 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, without frit |
| Part Numbers | CPI 2-1 ZHCZ7, A-LOK 2-1 ZHLZ7 ~ CPI 6-1 ZHCZ7, A-LOK 6-1 ZHLZ7 |
| 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 / No frit: for use with G.C. (gas chromatograph) columns or L.C. (liquid chromatograph) columns with screens / Can be used as a low volume reducing union |
| Sizes (inches): T1 tube O.D., T2 tube O.D., internal volume by CPI Part Number (A-LOK Part Number) | 2-1 ZHCZ7 (2-1 ZHLZ7): T1 tube O.D. 1/8", T2 tube O.D. 1/16", internal volume 1.0 × 10⁻⁴ cc / 4-1 ZHCZ7 (4-1 ZHLZ7): T1 tube O.D. 1/4", T2 tube O.D. 1/16", internal volume 1.1 × 10⁻⁴ cc / 6-1 ZHCZ7 (6-1 ZHLZ7): T1 tube O.D. 3/8", T2 tube O.D. 1/16", internal volume 1.3 × 10⁻⁴ cc |