Butterfly valve ACC according to BS, DIN and ASTM A standards.

Butterfly valves can be used for on/off service and throtting/balancing. They 

are superior in "versatility" as compared to a gate or globe valve. Butterfly 

valves have a wider range of chemical resistance due to the trim options and 

choice of elastometric liners. Butterfly valves offer 1/4 turn open to close. 

Gates and globes require multiple turns to open and close. Ease of opening 

or closing means that butterfly valves can employ less expensive operators.

A butterfly valve is generally 40% the cost of an iron gate equaling, not only 

low initial cost but low installation costs as well!