| What is the minimum RPM for Cat PumpsŪ? |
| 100-150 RPM is typically the minimum RPM to operate your Cat Pump to assure proper crosshead lubrication. With a VFD it is possible to use a 10:1 turndown ratio, however, it is best not exceed the 100 RPM minimum. When the pump is operating at a lower RPM, it is recommended to pressure feed the pump inlet [no negative suction] to avoid starvation or cavitation. Contact us with any questions you have regarding the optimum RPM for your installation. |
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| What pump drives are suitable to Cat PumpsŪ? |
| Cat PumpsŪ are suited to a variety of pump drives including electric, gas, diesel and hydraulic. The traditional way of installing a system is using pulleys and belts. This provides the greatest flexibility in meeting a particular flow requirement. The belts also provide added shock absorption during stops and starts. Belts do require additional selection, installation and maintenance steps and there are other options for different systems and performances. Select models are available with flanges or gearboxes for direct mounting to gas engines. Direct-drive pumps using a bell housing and flexible coupling eliminate the need for pulley/belt selection and installation. They provide a secure alignment of the pump and motor and the high strength spyder cushions the stops and starts. Where hydraulic power is available, Cat Pumps can easily be fitted to a hydraulic motor taking advantage of existing hydraulic systems. Contact us to review your pump drive options. |
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