First of all, check the size and type of valve. You should select the right valve type. Each valve ought to perform one or more basic functions that include pressure relief, adjust the flow, backflow prevention, mix flow, shut off the flow, and divert flow. To learn more about Specialty Valves, visit here. There are many types of valves, for example, check valves, ball valves, needle valves, metering valves, toggle valves, stopcocks, regulators, pinch valves and relief valves; function determines the design of valve types. It is essential to know the correct size of the valve. To choose the right valve, you should match the size of the valve to the flow you expect them to hold.
Next, you should factor in special requirements. Ensure the new valve will work as needed. Factor in the response time needed and the tracking pressure needed to open the valve. Choose between closed and open valves. There are basic valves that need positive downstream pressure in order to open. Others require positive backpressure in order to close. Read more about Specialty Valves from here. Appropriate selection between the two can enhance valve reliability. You should base this decision on whether your system usually needs a valve to open or close. Some valves may fail to work well if mounted vertically. Flow direction and fluid density matter for valve designs that can be attached vertically.