进口减压阀的工作原理当导阀打开以后，从图2中可以看出，上游管段A腔的蒸汽迅速进入内部过滤罩，通过导阀到达a通道（供汽调节通道），当a通道充满蒸汽后直接被送至主阀膜片下腔，同时一部分蒸汽通过b通道（压力控制通道）被分流进入B腔。主阀膜片下腔在a通道蒸汽不断地供给下，主伐膜片受压后向上突起，所产生的推力推动主阀杆向上运动，打开主阀，同样蒸汽源源不断地从A腔流向B腔。当下游出口管段负荷满足的情况下，余多的蒸汽同样也使B腔内的压力不断升高，不断升高的压力通过c通道（压力感应通道）传输到导阀膜片下汽腔，此时导阀膜片向上突起，克服上部调节弹簧的压力，导阀被关小或关闭。
减压阀（reducing
valve）是采用控制阀体内的启闭件的开度来调节介质的流量，将介质的压力降低，同时借助阀后压力的作用调节启闭件的开度，使阀后压力保持在一定范围内，并在阀体内或阀后喷入冷却水，将介质的温度降低，这种阀门称为减压减温阀。该阀的特点，是在进口压力不断变化的情况下，保持出口听压力和温度值在一定的范围内。
GWMF812-0-W
GWP10-0
GWP1012-C
GWP1012-L
GWP1012-Y
GWP10-B
GWP12-0
GWP1212-C
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GWP16-B
GWP4-0
GWP44-C
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GWP46-0
GWP46-C
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GWP4-B
GWP4-B-P70
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GWP610-L
GWP66-C
GWP66-L
GWP66-Y
GWP68-0
GWP68-L
GWP68-Y
GWP6-B
GWP6-B-P70
GWP8-0
GWP810-0
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GWP88-C
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GWS10-10
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GWS4-6P
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GWS6-0-X-P6
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GWS6-10
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GWS6-10-M
GWS6-10P
GWS6-10-P6
GWS6-4P
GWS6-6
GWS6-6-E
GWS6-6-P6
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GWS6-8
GWS68-0
GWS6-8-E
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GWS6-M5
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GWS8-0
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GWS8-6-M
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GWT10-0
GWT10-10
GWT10-10-D
GWT10-15
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GWT12-0-P6
GWT12-10
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GWT12-8
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GWT4-8
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GWT4-M5
GWT6-0
GWT6-10
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GWT6-6
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GWT6-8
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GWT6-M5
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GWT8-0
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GWT8-10
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GWT8-6
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GWT8-6-P6
GWT8-8
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GWTR10-0
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GWTR4-0
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GWY12-10
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GWY12-15
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GWY44-0
GWY4-6
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GWY6-10
GWY64-0
GWY6-6
GWY66-0-P70
GWY6-8
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GWY8-10
GWY8-6
GWY86-0
GWY86-0-P6
GWY86-0-P70
GWY8-8
GWY88-0
GWY88-0-P6
GYX-0136-FL-320992
HB21-6-1-N-DC24V
HMVC2-8-4H
HMVC2-8-4V
HMVO2-8-4H
HRL-1L-10-500-Q
HSV-B-8
HSVC2-10-4V
HSVC2-15-4H
HSVC2-15-4V
HSVC2-20-4H
HSVC2-8-4H
HSVC2-8-4V
HSVO2-20-4H
HSVO2-8-4H
HVB112-6N-5-AC100V
HVB112-6N-5-AC200V
HVB112-6N-5-DC24V
HVB41-8N-5-3H-DC24V
HVB41-8N-5-AC200V
HVB71-15F-5-DC24V
J703-705-AS-05N
J708-102-AS-20N
JL-6
JL-8-6
JSC3-100-BRAKE-UNIT
JSC3-40K
JSC3-50K
JSC3-63K
JSC3-FA-100-BRAKE-UNIT
JSC3-FA-63-BRAKE-UNIT
JSC3-N-140K
JSC3-N-160K
JSC3-N-180K
JSC3-T-40
JSC3-T-50
K61400E-4C-FGB
L1000-8
LCM-A-8-20-R-F3H-D
LCS-12-10
LCS-12-10-T0H-D-A3B
LCS-12-20-T0H-D-A3B
LCS-12-30-T0H-D-A3B
LCS-12-50
LCS-12-50-T0H-D-A3B
LCS-12-A1
LCS-12-A2
4KB350-10-MILS
AB21-02-3-A AC220V
AB41-03-7 110V
MN-25
4KB210-04
AB41-04-8-02E AC220V
gfwb21-x0102
gfwb21-x0103
T2H
AB31-02-5-02GB-AC100V
AB41-03-8-02E-AC100V
CMK2-00-20-125-M33-D
CMK2-00-20-160-M33-D-V
CMK2-C-00-25-35-M33-D-V
CMK2-C-00-25-90-M33-D-V
CMK2-CC-25-75-M33-D-V
CMK2-C-FA-25-90-M33-D-V
CMK2-C-FA-32-40-M33-D-V
FA431-15A-B
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