Description: amount of gaseous substance in the liquid to be transported in the pump; Name: content of gas
Description: proportion of gaseous substance in the liquid to be pumped, either as a contaminant or as vapour from the main body of liquid; Name: gas content
Description: norm describing the material. The material number is taken from this norm. Type and number of the norm with issue year and issue month must be given; Name: Reference norm material of the valve ball/valve cone