CHARLES AUSTEN PUMPS LTD D7 SERIES OIL FREE - DIAPHRAGM PUMP • Vacuum pump compressor provides a clean oil free vacuum and pressure source. APPLICATIONS • AIR SAMPLING • GAS SAMPLING • BLOOD PRESSURE MONITORS •BENCHTOPAUTO CLAVES • MEDICAL SUCTION Suitable for continuous duty and samping applications where reliability is essential. EMMISSIONS MONITORING • Offers over 8000 hours of performance between service intervals. • Designed for compact installations, the D7 series offers excellent performance for its size. • Available with a variety of mounting brackets and anti-vibration mounts for easy installtion. 2.0 PUMP MATERIALS COMPONENT

CHARLES AUSTEN PUMPS LTD // D7 SERIES OIL FREE - DIAPHRAGM PUMP SERIES & PARALLEL PUMPS With twin headed pumps it is possible to connect the fluid ports of the pumps in 3 distinct configurations. Connecting a pump in series directs the outlet of the first stage to the inlet of the second stage. The result of this is a higher achievable pressure and vacuum level. Flow will be equivalent to a single headed pump. Connecting a pump in parallel bridges both stages' inlet and outlet together. This has the effect of approximately doubling the flow. Vacuum and pressure levels will be equivalent to a...