| 摘要 |
<p>A proportional pressure controller (10) includes a body having inlet (28), outlet (30), and exhaust (32) ports. A fill valve (54) communicates with pressurized fluid in the inlet port (28). A dump valve (56) communicates with pressurized fluid from the fill valve (54). An inlet poppet valve (36) opens by pressurized fluid through the fill valve (54). An exhaust poppet valve (80) when closed isolates pressurized fluid from the exhaust port (32). An outlet flow passage (34) communicates with pressurized fluid when the inlet poppet valve (36) is open, and communicates with the outlet port (30) and an exhaust/outlet common passage (86). A fill inlet passage (62) communicates between the inlet passage (58) and fill valve (54), and is isolated from the outlet flow passage (34), exhaust/outlet common passage (86), and outlet and exhaust ports (30,32) in all operating conditions of the controller (10).</p> |
