When choosing a gate valve or butterfly valve, there are multiple factors to consider. Both valves are widely used in high-pressure systems, where they must be able to perform reliably even under intense stress.
On the one hand, gate valves have been shown to have excellent performance even at very high pressures. They can also be easily modulated to only allow a certain amount of liquid through, making them ideal for situations where precise control is important.
However, butterfly valves are preferable for some applications due to their simpler design and ease of maintenance.
Different applications will require various valves depending on cost, pressure levels, and other factors, making it impossible to say that one type is the best overall.