... the ratio of air and and solid in the pneumatic system, the solid is more steady, so to make the ... . It is suitable for positive/negative pressure differential suction system, so it is always selected to be used by ... the projects.Pressure Range: 1.0 bar(14.5psi), system and differential pressure.Large inlet/outlet: Without restriction of the ... FC, 304,316,304L, 316L Inlay Rotary valve with sight glass