Technical Notes: 1. Direction of flow is outside to inside through the element. 2. Filter elements should be replaced at least every 6 months. 3. Pop Up Indicator (65DPUB3) is fitted to models A30025 to A30050 as standard. Differential pressure gauges (65DPG250B) are fitted to models A30070 to A31500 as standard. Volt free contact options are available. 4. Manual drain valves (MDVE25B) are fitted to all models. Sterilisable glass drain flasks are supplied as standard, 100ml for models A30025MV to A30105MV and 250ml for models A30175MV to A31500MV. 5. Threaded connections are Rp (BSPP parallel) to ISO 7-1 or NPT to ANSI/ASME B1.20.1 if supplied within North America. Rc (BSP Taper) to ISO 7-1 also available. 6. For NPT connections, add the suffix e.g. A30070NMV. For Rc threads add the suffix e.g. A30070CMV.