固定节流孔,优先流量阀
B 11L/min
C 23L/min
D 45L/min
E 95L/min
F 200L/min
X螺杆 L刻度调钮 附制动环 K 调钮 附定位钮
FRBA
A*节流孔不可更替
FRCA FRDA FREA FRFA
A*节流孔可更替
流量指定范围:FRBA: 0.4-11L/min
FRCA: 0.4-23L/min FRDA:0,4-45L/minFREA:0.8-95L/min FRFA:0.8-200L/min