Magill valve
Waters valve
Bain valve
Jackson Rees valve
Ayre's T-piece valve

22 mm diameter
15 mm diameter
10 mm diameter

Rubber (1/1.5/2/3/4/5 liter)
Latex-free (2 liter)
Silicone (0.5/1/2.3 liter)

Oxygen
Nitrous oxide
Air
Vacuum

DIN
AFNOR
BS
Medec Slidindex

Low suction (0 - 25 kPa)
High suction (0 - 100 kPa)

Single station
Double station
Triple station

Oxygen (0 - 2.3 l/min)
Oxygen (0 - 8 l/min)
Oxygen (0 - 15 l/min)
Air (0 - 8 l/min)
Air (0 - 15 l/min)

Oxygen (Pin-index)
Nitrous oxide (Pin-index)
Air (Pin-index)
Oxygen (bullnose)
Nitrous oxide (bullnose)