... service high reliability and durability patented product gas flowmeter,gas meter,chlorine flowmeter:industrial use,all gas, natural gasThe flow meters ... type (ExiallBT4)Protection classIP65; IP67;IP68Note: Size of flowmeter flange shall execute GB/T9115.1~9115.4~2000 series ... type, small diameter flowmeter of DN6, DN8, DN10 etc. can be manufactured to user requirements. Chlorine flow meter (industrial ...