Pneumatic control valve for regulating steam
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Dear sea friends, there are currently two operating conditions: for the first one, the inlet pressure is 2.1 Mpa, the outlet pressure is 2.0 Mpa, and the shutdown pressure difference is 2.5 Mpa； Steam ； The second inlet has a pressure of 0.6 Mpa, the outlet has a pressure of 0.5 Mpa, and the shutdown pressure difference is 0.8 Mpa ； Do I need to choose straight-through single-seat sleeve valves for both of these? Can a single-seat valve (plunger type) be used for steam media with a low pressure difference?
The first thing to consider is whether this sleeve is intended to reduce noise Or some other function? And then consider whether it is necessary to set the appropriate type?
Closing pressure difference: Considered based on the seat load capacity and for selecting the actuator. Generally, depending on the size of the valve, plug valves are preferred for sizes of 3 inches and below, while cage valves are preferred for sizes of 4 inches and above. Leakage requirements also need to be considered; for example, traditional plug valves can achieve V-grade performance, but cage-type V-grade valves require a sealing ring design.