德國KRACHT限壓閥DB12P-01-C-N-050V 

KRACHT限壓閥是一種(zhong)壓力(li)安全(quan)自(zi)動閥，只要(yao)用于2P以上空(kong)調器冷暖系統中。限壓閥結(jie)構它的一端(duan)(duan)接壓縮(suo)機排氣(qi)端(duan)(duan)，另一端(duan)(duan)接壓縮(suo)機吸氣(qi)端(duan)(duan)。

    限壓(ya)閥的基本結(jie)構(gou)：
    限壓(ya)(ya)閥一(yi)般有閥體(ti)（錐形，球形）    克(ke)拉克(ke)限壓(ya)(ya)閥是一(yi)種壓(ya)(ya)力(li)安全自動閥，只要用于2P以上空調器冷暖系統中。限壓(ya)(ya)閥結構它的一(yi)端(duan)接(jie)壓(ya)(ya)縮機排氣端(duan)，另(ling)一(yi)端(duan)接(jie)壓(ya)(ya)縮機吸氣端(duan)。
    限壓(ya)閥的工(gong)作原理(li)：
    在大多數(shu)(shu)時間(jian)里，限壓(ya)(ya)閥處(chu)(chu)于(yu)關閉狀態，只有當工作介(jie)(jie)質(zhi)(zhi)的壓(ya)(ya)力(li)超過一(yi)(yi)定數(shu)(shu)值時，限壓(ya)(ya)閥開啟，從旁路排泄一(yi)(yi)部分介(jie)(jie)質(zhi)(zhi)，使(shi)系統內(nei)的壓(ya)(ya)力(li)降低；當系統的壓(ya)(ya)力(li)達到(dao)下*，限壓(ya)(ya)閥關閉，系統的壓(ya)(ya)力(li)又(you)上升。如(ru)此周而復始(shi)調節，使(shi)系統內(nei)的介(jie)(jie)質(zhi)(zhi)壓(ya)(ya)力(li)經常(chang)處(chu)(chu)在一(yi)(yi)個合理(li)水平上，保證燃(ran)油系統、潤滑系統、冷卻系統和液(ye)壓(ya)(ya)系統工作正常(chang)。
德國KRACHT限壓閥DB12P-01-C-N-050V 

    當冷(leng)(leng)(leng)疑壓(ya)(ya)力(li)上(shang)升(sheng)時(shi)，彈(dan)(dan)性(xing)膜片克服彈(dan)(dan)簧壓(ya)(ya)力(li)向上(shang)運動(dong)，將(jiang)閥(fa)球(qiu)打開(kai)，高壓(ya)(ya)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng) 劑由(you)旁通(tong)(tong)管路進人壓(ya)(ya)縮(suo)機低壓(ya)(ya)端。當冷(leng)(leng)(leng)凝壓(ya)(ya)力(li)下(xia)降時(shi)，彈(dan)(dan)性(xing)膜片向下(xia)運動(dong)，將(jiang)球(qiu)閥(fa)關閉。其目的將(jiang)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)系(xi)(xi)統(tong)冷(leng)(leng)(leng)疑器(qi)(qi)壓(ya)(ya) 力(li)控制(zhi)(zhi)(zhi)在(zai)規定(ding)的壓(ya)(ya)力(li)。制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)系(xi)(xi)統(tong)混(hun)入水(shui)份后，會(hui)使限壓(ya)(ya)閥(fa)彈(dan)(dan)簧銹(xiu)蝕，造成彈(dan)(dan)簧不能自(zi)動(dong)調節(jie)壓(ya)(ya)力(li)。 例如(ru)，一臺(tai)分體(ti)式空(kong)調器(qi)(qi)早、晚制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)良好，中午制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效果差(cha)(cha)(cha)。測量(liang)電(dian)壓(ya)(ya)正常。檢(jian)查冷(leng)(leng)(leng)凝器(qi)(qi)并(bing)用(yong)氣體(ti)吹洗，制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)量(liang)差(cha)(cha)(cha)沒(mei)有改變。手摸限壓(ya)(ya) 閥(fa)體(ti)沒(mei)有溫度變化。初步認(ren)定(ding)限壓(ya)(ya)閥(fa)在(zai)中午天氣悶(men)熱壓(ya)(ya)力(li)較高時(shi)，不能自(zi)動(dong)調節(jie)壓(ya)(ya)力(li)。把限壓(ya)(ya)閥(fa)更(geng)換后；通(tong)(tong)電(dian)試機驗(yan) 證，中午制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效果差(cha)(cha)(cha)故障(zhang)排除。
    限壓(ya)(ya)閥可(ke)限制循環油(you)(you)(you)路中(zhong)的(de)油(you)(you)(you)壓(ya)(ya)，防止機(ji)(ji)(ji)油(you)(you)(you)過多竄入燃燒(shao)室、機(ji)(ji)(ji)油(you)(you)(you)耗量增加(jia)，發動機(ji)(ji)(ji)工作(zuo)出現(xian)不正常現(xian)象。同時也(ye)為了(le)避免油(you)(you)(you)壓(ya)(ya)過高，造成(cheng)管路及濾清(qing)器爆破(po)。限壓(ya)(ya)閥是(shi)靠彈簧(huang)的(de)壓(ya)(ya)力來控制油(you)(you)(you)壓(ya)(ya)的(de)單向閥。當油(you)(you)(you)路中(zhong)油(you)(you)(you)壓(ya)(ya)大(da)于彈簧(huang)壓(ya)(ya)力時，則閥球打開，部分(fen)機(ji)(ji)(ji)油(you)(you)(you)流回油(you)(you)(you)底殼，于是(shi)油(you)(you)(you)路卸壓(ya)(ya)。它一般安(an)裝在機(ji)(ji)(ji)油(you)(you)(you)泵或主油(you)(you)(you)道上。
    傳統油(you)箱(xiang)蓋(gai)的工作原理與散熱器蓋(gai)相似，其(qi)上至(zhi)少有一(yi)個限(xian)壓閥(fa)，例(li)如(ru)采用空(kong)(kong)氣(qi)(qi)(qi)(qi)一(yi)蒸氣(qi)(qi)(qi)(qi)閥(fa)來平(ping)衡燃(ran)(ran)(ran)油(you)箱(xiang)內(nei)(nei)(nei)外(wai)的壓力。隨著油(you)箱(xiang)內(nei)(nei)(nei)燃(ran)(ran)(ran)油(you)的逐漸消耗，油(you)面不斷下降，在油(you)面上方形成(cheng)(cheng)負壓，當真空(kong)(kong)度(du)(du)達(da)到(dao)一(yi)定(ding)程(cheng)度(du)(du)時(shi)，油(you)箱(xiang)蓋(gai)的空(kong)(kong)氣(qi)(qi)(qi)(qi)閥(fa)（即進氣(qi)(qi)(qi)(qi)閥(fa)）被(bei)大(da)(da)氣(qi)(qi)(qi)(qi)壓力推開(kai)，外(wai)界(jie)空(kong)(kong)氣(qi)(qi)(qi)(qi)進入燃(ran)(ran)(ran)油(you)箱(xiang)內(nei)(nei)(nei)，使油(you)箱(xiang)內(nei)(nei)(nei)外(wai)的壓力達(da)到(dao)平(ping)衡。如(ru)果空(kong)(kong)氣(qi)(qi)(qi)(qi)閥(fa)因故無法(fa)開(kai)啟，造(zao)成(cheng)(cheng)燃(ran)(ran)(ran)油(you)箱(xiang)內(nei)(nei)(nei)存(cun)在明顯的負壓，燃(ran)(ran)(ran)油(you)泵可能吸不上油(you)，將造(zao)成(cheng)(cheng)發動機怠速不穩(wen)定(ding)，甚(shen)至(zhi)將燃(ran)(ran)(ran)油(you)箱(xiang)吸癟。當溫度(du)(du)增高，燃(ran)(ran)(ran)油(you)箱(xiang)內(nei)(nei)(nei)的燃(ran)(ran)(ran)油(you)蒸氣(qi)(qi)(qi)(qi)過多，油(you)氣(qi)(qi)(qi)(qi)壓力高于大(da)(da)氣(qi)(qi)(qi)(qi)壓力時(shi)，油(you)箱(xiang)蓋(gai)的蒸氣(qi)(qi)(qi)(qi)閥(fa)被(bei)頂開(kai)，燃(ran)(ran)(ran)油(you)箱(xiang)內(nei)(nei)(nei)的燃(ran)(ran)(ran)油(you)蒸氣(qi)(qi)(qi)(qi)（HC）從閥(fa)門逸(yi)入大(da)(da)氣(qi)(qi)(qi)(qi)中，使油(you)箱(xiang)內(nei)(nei)(nei)外(wai)的壓力達(da)到(dao)平(ping)衡，可以防止(zhi)燃(ran)(ran)(ran)油(you)箱(xiang)被(bei)脹(zhang)裂。、閥(fa)座、調節彈簧、調壓螺釘和鎖緊螺母以及密(mi)封墊圈(quan)等零件組成(cheng)(cheng)。

低壓傳送齒輪泵 KF 0/0.5-KF0/4 ，KF 1/4-KF1/24，KF 4…80,KF 3/100-KF6/630,KF3/63-KF6/630 噪音優化型，BT/BH； 
高壓傳送齒輪泵（大于25BAR） KP1/5.5, KP1/6.3, KP1/8, KP1/11, KP1/16, KP1/19, KP1/22,ACL 23,ACL 33,ACL 33 S,ACL 43,ACLD 23,ACLD 33,ACLD 33 S,ACLD 43,ACLDR 23,ACLDR33,ACLDR 33 S,ACLDR 43,ACLDR 53,ACLDR 53S,ACLDR 63, 
調壓閥：SPV10B1G1A12，SPVM10A1G1B30，SPV10A1G1A，SPV10B1G1A，SPVM10A1G1A，SPV10A1G1B，SPVM10A1G1B，SPVF25，SPVF40，SPVF50，SPVF80，SPVF40B2F1A20+2*CFS106-ST

德國KRACHT限壓閥DB12P-01-C-N-050V