KRACHT溢流閥SPVF25K2F1A12其作用是限制潤滑系的油壓,使其不要超過規(guī)定值。其工作原理是:發(fā)動機(jī)潤滑系油路中油壓超過規(guī)定值時,限壓閥被推開,多余的潤滑油便流回油底殼或機(jī)油泵進(jìn)油口,使油壓降低。油壓越高,限壓閥開度越大,流回油底殼的潤滑油越多,油壓下降得越多。當(dāng)潤滑系油壓降到正常壓力時,限壓閥在彈簧作用下便復(fù)位。
KRACHT溢流閥SPVF25K2F1A12的構(gòu)造：
滑動活塞2在壓縮彈簧3作用下壓在環(huán)形區(qū)域a上。因此與泵想通的P口同與油箱相通的R口被直徑d處的密封隔離開。一旦工作壓力達(dá)到由調(diào)節(jié)螺釘4調(diào)定的壓力，滑動活塞2開始卸荷液壓油至油箱。彈簧腔b由孔c進(jìn)行壓力補(bǔ)償。開始時，彈簧腔b一定要通過放氣孔5（六角螺釘）進(jìn)行排氣。
KRACHT齒輪泵現(xiàn)貨型號：
SPVF25C2F1A12
SPVF40A2F1A05
SPVF25C1G1A12
SPV10C1G1A12
SPVF40A2F1A05
SPVF40A2F1A02
SPVF40C2F1A02
SPVF40A2F1A12
SPVF50A2F1A20
SPVF25A2F1A05
SPVF25A2F1A02
SPV10C1G1A07
SPV10C1G1A12
SPV10R1G1A07
KF2.5RF7/74
KF4RF7/74
KF8RF7/74
KF12RF7/74
KF16RF7/74
KF25RF7/74
KF32RF7/74
KF40RF7/74
KF63RF7/74
KF80RF7/74
KF112RF7/74
KF150RF7/74
KF125RF7/74
KF200RF7/74
KF250RF7/74
KF5/315 KF6/730
KF400
VCA2FCR1
KF2.5RF2-D15
KF12RF2-D15
KF20RF2-D15
KF25RF2-D15
KF40RF2-D15
KF32RF2-D15
KF80RF2-D15
KF40LF2-D15
KF63RF2-D15
KF80RF1-D15
KF4/125
KF3/100
KF150RF2-D15
KF125RF2-D15
KF32RF7/74-D15
KF25RF7/74-D15
KF20RF7/74-D15
KF32LF7/74-D15
KF80RF7/74-D15
KF150LF7/74-D15
KF40RF7/74-D15
KF16RF2/158-D15
KF12RF2/158-D15
KF2.5RF2/158-D15
KF4RF2/158-D15
KF25RF2/158-D15