压差阀活塞
pressure difference valve piston
减压阀滑阀
pressure reducing valve spool
优先控制减压阀滑阀
priority reducing valve spool
PG7607活塞压力计
PG7607 piston pressure gauge
安全阀压套
safety valve pressing sleeve
差动活塞压缩机
differential piston compressor
差压阀
differential pressure valve
valve check
differential pressure type flow meter
differential valve
defferential valve
differential pressure gage
单活塞压力真空计
single piston pressure-vacuum gauge
定压差阀
pressure-differentially-set valve
反压活塞式压力计
piston gauge with re-entrant cylinder column
风压差压保护
differential pressure protection of compressed air pressure
高压差阀门
high pressure differential valve
high-pressure differential valve
高压滑阀
high pressure valve spool