A lined butterfly valve could be described as:
1. Having flangeless or glanged connections and carbon steel or stainless steel bodies. With their very tight shutoff, heavy duty construction, and tight linkages, these valves are suitable for as many process applications as their sliding stem counterparts
2. Designed for use with corrosive fluids
3. Being handicapped by lack of tight shutoff
a) 1
b) 2
c) 3
d) 1, 2
e) 2, 3
Answer: B