UL 51:2013 pdf download – Power-Operated Pumps and Bypass Valves for Anhydrous Ammonia,LP-Gas, and Propylene

UL 51:2013 pdf download – Power-Operated Pumps and Bypass Valves for Anhydrous Ammonia,LP-Gas, and Propylene. 13 Guards 13,1 A gear, belt, pulley, or other rotating part shall be enclosed in a metal guard to reduce tile risk of unintentional contact,...