| Noncircle systems like the stock Bain system are associated
with a number of drawbacks. These drawbacks include the awkward delivery
of positive pressure ventilation (PPV) including an uncertainty as to the
actual pressures delivered during PPV, and difficulties collecting waste
gases.
Adding a Bain Block (Armstrong Arm) rectifies these
concerns. This ~$300 USD investment is money well spent. The Bain system
attaches to the outlet to the left in the pictures above.. The reservoir
bag is located in a familiar vertical position with the pop-off just
above. A pressure manometer is included. Adding a pop-off occluson valve
to the Bain Block completes a convenient and effective delivery system.
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