Lets have a look on the wide range of Poppet Valve which are not favorable in terms of the relationship between space and flow due to constructional constraints. The downside of these valves is that air is allowed to go in any direction as the poppets shift from one flow path to another. Right now, Poppet Valve are available in few varieties such as 5/2 Internal Pilot Operated Single Solenoid Poppet Namur Valve With FLP Coil, 5/2 Internal Pilot Operated Single Solenoid Poppet Valve, and 4 Way Solenoid Valve. They make them better suitable for specific applications that demand precise control, large flow rates, long life, low leak rates, quick response times, or low cost.