Description: Highest speed for continuous operation recommended by the manufacturer; Name: maximum permissible continuous speed 
Description: highest speed for continuous operation recommended by the manufacturer; Name: maximum allowable continuous speed
Description: PN (nominal pressure) is an alphanumeric variable for reference purposes, relating to a combination of mechanical and measurement properties of a pipe component. It comprises the letters PN followed by a dimensionless number (according to EN 1333/96.08); Name: Nominal pressure of the muffs, A2