However, the Administration may, having regard to the output or any other features of any steam boiler or unfired steam generator, permit only one safety valve to be fitted if satisfied that adequate protection against overpressure is thereby provided in accordance with the rules of a recognised organisation.
Uprava lahko glede na zmogljivost ali druge lastnosti katerega koli parnega kotla ali generatorja pare dovoli namestitev enega samega varnostnega ventila, če je prepričana, da to v skladu z določbami priznane organizacije zagotavlja ustrezno zaščito pred previsokim pritiskom.