butterfly valve
Material Working condition Main medium
Type Standard PN / MPa t / ℃
Grey iron HT200 ≤1.6 ≤200 Water, steam, oil
Ductile iron QT450 ≤4.0 ≤350
Fine steel casting iron WCB ≤16 ≤450
Acid resisting steel with nickle, chromium, titanium 304 ≤6.4 ≤200 For caustic substance like nitric acid
—100 ~ —196 Ethylene etc, low temperature medium
≤600 High temperature steam, gas etc
Acid resisting steel with nickle, chromium, molybdenum 316 ≤20 ≤200 Acetic acid etc
Bronze ≤1.6 ≤200 Water, steam, gas etc