丹佛斯变量柱塞泵90R05590R075型变量柱塞泵能够有效的实现工作压力、流量和压力的高度控制、流量可调，能够实现全自动连续工作，液压系统的流量、速度、压力可调节，能够实现连续、无级调节丹佛斯柱塞泵可直接把柱塞直接推入式或半联动式作业模式，可以将主机控制起来在一定范围内可进行任意的角度调节，这一特点使得操作变得十分方便。
丹佛斯柱塞泵产品适用于各种混凝土.砂浆.该系列沥青路面浇筑施工及高层建筑分为以下几类：90R055.90R075变量柱塞泵(适用于任何规格)(不包括各种标准型号)(3)在装配时用砂纸或无纺布或橡胶薄膜对零件进行擦拭。
(2)检查是否松动 (1)柱塞泵工作时，禁止用手、锤子及其它金属物品敲击或用力摇动； 严禁用铁器刮擦零部件如必须敲打，应先切断电源，使内部绝缘良好，再敲打在使用过程中应经常检查润滑情况并经常清洗过滤器 (2)使用润滑脂，但不得使该油液进入活塞的进齿圈和出料端； (3)定期检查气缸内各零部件是否磨损，并及时更换磨损部位；(4)如果使用液压油，请更换液压油及其他易损件；(5)如活塞工作时出现振动或噪声应及时维修，不得长时间运转后修复；丹佛斯柱塞泵是一种能代替老式挖掘机的新型产品。
它由两个结构组成:1.双缸双吸单排排油底壳2.单缸双吸单排排油底壳2.双缸双吸单排排油底壳3.双缸双吸/双排排油底壳4.单缸双吸/双排排为适应不同工作工况需要 (3)装配时动作应灵活可靠，声音正常； 装配时应使零件间隙符合要求，并使液压元件充分润滑，装配好后再进行试运转，防止损坏零件。
检查工作齿轮、凸轮轴座、滚轮等，应无划伤；检查凸轮轴与齿轮、凸轮轴座配合面、齿轮轴孔及轴套等处有无裂纹；检查齿轮、凸轮轴配合面是否平整光滑；检查活塞应在油腔内进行并应按规定进行定位、压盖、轴套及联轴器等零件的装配。
丹佛斯柱塞泵上连接螺栓有两种类型:1.单向柱塞泵主要用于输送压力较大时不需外加压力就可以输送液体，可直接把柱塞直接推入式或半联动式作业模式等;2.单向柱塞泵主要用于输送油类和固体颗粒较大时无需外加压力就可以输送液体。
对于安装使用条件很苛刻的场合，只需将管路上的阀门关闭即可 (4)如发现有异常现象，应立即停止工作，查明原因对症解决 丹佛斯新型柱塞泵具有质量轻、寿命长、噪音低、操作方便、安装简单、节省材料、结构紧凑、节能等特点，液压油经过密封圈过滤后与空气混合，以降低磨损，并可直接用于泵内输送介质。
液压系统中的介质称为液压油它是一种具有润滑和冷却作用的液体常用于高温工业炉、油田抽排油，以及食品加工设备上通常以油泵直接从压力容器中排出，这种排油方法使压缩空气中大量的氧气进入液压油内部，在高温下通过金属管壁使高压泵腔压力升高，并使油液产生高压从而实现排油的目的。
(5)若发动机发生故障时，当工作装置停于故障部位后，再继续按原操作方法进行维护或修理，严禁私自拆改零部件； 在操作之前要检查的是泵和控制装置是否出现故障，主要是注意油液是否变黑等，还有就是确认泵和控制系统有无漏油。
液压系统中的液压油液、油与气液的比例一般为1:7,而且，液压油液内会存在一些杂质，如果长期使用这种油液的话很容易造成液压马达故障等所以，对于这类液压管路及元件应该定期清洗和保养在每次工作前都应该检查系统内部是否有杂质及其他污染物存在；如果发现管道堵塞会及时清理或更换。
(6)必须将管路中的压缩空气放尽 对于一般的混凝土泵，建议安装压缩空气过滤器，如安装压缩空气过滤器时，应将管路中的压缩空气排尽如果管路中有空气回流，应切断管路中的压缩空气，将回油阀打开将管路中的空气放尽。
在进行其他混凝土输送前，必须将压缩空气管路中的空气放尽，避免吸入空气造成损坏由于输送过程中有回弹，在输送前必须将管路中的空气放尽当输送过程中出现气塞现象时，应及时处理 90L100-HF-1-AB-60-P-4-C7-E-03-GBA-26-26-30 90L100HF1AB60P4C7E03GBA262630 90-L-100-HF-1-AB-60-P-4-C7-E-03-GBA-26-26-30 90L100HF1AB60P4C7E03GBA262630 90-L-100-HF-1-AB-60-R-3-F1-E-00-GBA-29-29-24 90L100HF1AB60R3F1E00GBA292924 90-L-100-HF-1-AB-60-R-3-S1-E-00-GBA-35-35-24 90L100HF1AB60R3S1E00GBA353524 90L100-HF-1-AB-60-R-3-S1-E-03-GBA-35-35-24 90L100HF1AB60R3S1E03GBA353524 90-L-100-HF-1-AB-60-R-3-S1-E-03-GBA-35-35-24 90L100HF1AB60R3S1E03GBA353524 90-L-100-HF-1-AB-60-S-3-F1-F-03-GBA-42-42-24 90L100HF1AB60S3F1F03GBA424224 90-L-100-HF-1-AB-80-L-3-C7-F-03-GBA-42-42-24 90L100HF1AB80L3C7F03GBA424224 90-L-100-HF-1-AB-80-L-4-S1-E-02-GBA-29-29-24 90L100HF1AB80L4S1E02GBA292924 90-L-100-HF-1-AB-80-P-3-S1-F-03-GBA-35-35-24 90L100HF1AB80P3S1F03GBA353524 90-L-100-HF-1-AB-80-P-4-F1-E-03-GBA-32-32-24 90L100HF1AB80P4F1E03GBA323224 90-L-100-HF-1-AB-80-P-4-S1-E-03-GBA-42-42-24 90L100HF1AB80P4S1E03GBA424224 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90-L-100-HF-1-CD-60-S-4-F1-F-03-GBA-42-42-24 90L100HF1CD60S4F1F03GBA424224 90-L-100-HF-1-CD-61-R-3-F1-F-00-GBA-23-23-24 90L100HF1CD61R3F1F00GBA232324 90-L-100-HF-1-CD-80-L-3-C7-F-03-GBA-42-42-24 90L100HF1CD80L3C7F03GBA424224 90-L-100-HF-1-CD-80-L-3-S1-F-00-GBA-23-23-24 90L100HF1CD80L3S1F00GBA232324 90-L-100-HF-1-CD-80-P-4-F1-E-03-GBA-35-35-24 90L100HF1CD80P4F1E03GBA353524 90-L-100-HF-1-CD-80-R-3-F1-F-03-GBA-38-38-24 90L100HF1CD80R3F1F03GBA383824 90-L-100-HF-1-CD-80-R-3-S1-E-03-GBA-35-35-24 90L100HF1CD80R3S1E03GBA353524 90-L-100-HF-1-CD-80-R-4-C6-F-04-GBA-42-42-24 90L100HF1CD80R4C6F04GBA424224 90-L-100-HF-1-CD-80-R-4-S1-E-03-GBA-35-35-24 90L100HF1CD80R4S1E03GBA353524 90-L-100-HF-1-CD-80-S-4-F1-E-03-GBA-35-35-20 90L100HF1CD80S4F1E03GBA353520 90-L-100-HF-1-NN-60-L-3-F1-E-00-GBA-29-29-24 90L100HF1NN60L3F1E00GBA292924 90-L-100-HF-1-NN-60-L-3-F1-E-03-GBA-29-29-24 90L100HF1NN60L3F1E03GBA292924 90-L-100-HF-1-NN-60-L-3-F1-E-03-GBA-32-32-24 90L100HF1NN60L3F1E03GBA323224 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90-L-100-HF-2-BC-80-R-4-F1-E-03-GBA-32-32-20 90L100HF2BC80R4F1E03GBA323220 90-L-100-HF-5-AB-60-L-4-F1-E-03-GBA-38-38-24 90L100HF5AB60L4F1E03GBA383824 90L100-HF-5-AB-60-P-4-C7-E-03-GBA-26-26-30 90L100HF5AB60P4C7E03GBA262630 90-L-100-HF-5-AB-60-P-4-C7-E-03-GBA-26-26-30 90L100HF5AB60P4C7E03GBA262630 90L100-HF-5-AB-60-P-4-C7-E-04-GBA-35-35-28 90L100HF5AB60P4C7E04GBA353528 90-L-100-HF-5-AB-60-P-4-C7-E-04-GBA-35-35-28 90L100HF5AB60P4C7E04GBA353528 90L100-HF-5-AB-60-R-4-C7-E-03-GBA-35-35-26 90L100HF5AB60R4C7E03GBA353526 90-L-100-HF-5-AB-60-R-4-C7-E-03-GBA-35-35-26 90L100HF5AB60R4C7E03GBA353526 90L100-HF-5-AB-80-L-3-C7-E-03-GBA-32-32-24 90L100HF5AB80L3C7E03GBA323224 90-L-100-HF-5-AB-80-L-3-C7-E-03-GBA-32-32-24 90L100HF5AB80L3C7E03GBA323224。
