A valve-leaf protective structure for pressure regulator of air tank used in
diving
mainly includes a valve-leaf seat being provided at a lower center with a retaining
hole and at two sides with two raised supports, each of which is provided at an
upper inner surface with a rotary shaft hole; and a valve-leaf protective cover
located between the two raised supports of the valve-leaf seat, and provided at
two upper outer ends with two sideward projected rotary shafts for rotatably mounted
in the two rotary holes on the raised supports. A lower side of the protective
cover is formed into a tongue having a hook provided at a lowermost end thereof
to detachably engage with the retaining hole at the lower center of the valve-leaf
seat. Therefore, the protective cover may be pivotally turned about the rotary
shafts between the raised supports to close or open the valve-leaf seat.