i) Butterfly valve is used for: a) control (regulate) of liquid flow b) relatively low flow rates c) control of gas and vapor flows d) shut-off purposes ii) Plate heat exchanger is used for a) handling dirty fluids b) low pressure drops c) large fluid temperature differences d) high surface area of heat transfer iii) Types of pipe supports are a) clamps and saddle b) trapeze hangers c) clevis hanger d) All above