Agbegbe Imudaniloju Ewo ni DIIBT4

Awọn yiyan dIIBT4 ntokasi si a Kilasi II, Ẹka B bugbamu-ẹri Rating.

II	B	T4	Gb	IP64
Emi i	Methane	T1 450℃	Ma Ipele giga ti aabo	IP64
		T2 300 ℃
			Mb Idaabobo ipele giga
		T3 200 ℃
Mo dada awọn ohun elo	Propane		Ga Ipele giga ti aabo
		T4 135 ℃
	Ethylene		Gb Idaabobo ipele giga
		T5 100 ℃
	Hydrogen, Acetylene		Gc Idaabobo ipele gbogbogbo
		T6 85 ℃

Ìpele 'D’ tọka si iru apoti ina kan, ti a ṣe apẹrẹ ki eyikeyi bugbamu ti inu wa ninu laisi ibajẹ apade ati idilọwọ itankale bugbamu ni ita;

IIB ṣe pato ẹka ti gaasi ti a lo;

T4 n tọka si pe ọja ti o pọju ọja otutu o ku ni isalẹ 130 ° C.