Which of the following statements is FALSE about PISS standards?
a. The exact positions of pins and pinholes do not vary for each gas.
b. In order to work, the yoke nipple has to seat in the recessed valve outlet.
c. They apply only to cylinders using a yoke connection.
d. They have six pin positions and 10 possi-ble pin/hole combinations.
ANS: A
The exact positions of pins and pinholes vary for each gas. Unless the pins and holes align per-fectly, the yoke nipple cannot seat in the recessed valve outlet. Six holes and pin positions con-stitute the total system. Because overlapping holes cannot be used, there are 10 possible pin com-binations.
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