avent pump

Common inlet fittings include 1/4" SAE male, 3/8" SAE male and 1/2" ACME male. Refrigerant pump kits typically list color-coded rubber hoses with brass or leak-resistant fittings plus various adapters.

Common kit accessories include oil bottles, manifold gauges, color-coded hoses, adapters and user manuals. Some packages also list carrying cases, quick couplers, and — for aeration units — diffusers or extra hose accessories.

Several rotary-vane listings state a continuous runtime of over two hours (described as "over 2 hours" or "2+ hrs" in the product descriptions).

Oil capacities shown include about 330 ml, 250 ml and 280 ml. Listings also mention sight glasses or oil-level scales, anti-backflow inlet designs, oil fume/filter elements, and simple oil fill ports and drain plugs on some models.

Linear aeration pumps list an IP44 waterproof rating and describe low operating noise; one listing specifies minimal noise at ≤35 dB.