Regolatore di pressione per valvola ossigeno Hudson 2600 e 2 manometri
Many similar models (e.g., 2600 series variants like 2615, 2620, 2660) used CGA-870 yokes or CGA-540 inlets, with 0–15 or 2–15 LPM ranges. The 2600 specifically appears tied to CGA-540 inlet versions in older catalogs.