Controlled volume pumps (CVPs) are a type of positive displacement pump that are designed to deliver a consistent, predetermined volume of fluid at a constant flow rate. These pumps are used in a variety of industrial applications, including the oil and gas industry, where they are regulated by the American Petroleum Institute’s (API) Standard 675.
API 675 specifies the requirements for CVPs that are used in the petroleum and natural gas industries. These pumps are used for a variety of purposes, including transferring liquids, circulating fluids, and metering flow. They are typically used in process applications, such as refining, petrochemical processing, and chemical manufacturing.
One of the main features of CVPs is their ability to deliver a consistent volume of fluid at a constant flow rate. This is achieved through the use of a precision metering device, such as a rotary or reciprocating piston, that is designed to move a specific volume of fluid with each stroke. The metering device is typically driven by an electric motor or other power source, and is controlled by a feedback loop that ensures the desired flow rate is maintained.
API 675 sets out a number of requirements that CVPs must meet in order to be used in the oil and gas industry. These requirements cover a wide range of areas, including design, construction, testing, and maintenance. For example, the standard specifies requirements for the materials that can be used in the construction of CVPs, as well as the tolerances that must be met in their manufacturing. It also includes requirements for testing and inspection, including performance testing and routine maintenance.
In addition to the requirements set out in API 675, CVPs must also meet any additional requirements that may be imposed by local regulatory agencies. These may include additional testing or inspection requirements, or more stringent requirements for materials or construction.
Overall, controlled volume pumps are an important tool in the oil and gas industry, and are regulated by API 675 in order to ensure that they are safe and reliable. By meeting the requirements set out in this standard, manufacturers of CVPs can ensure that their products are of the highest quality and capable of meeting the needs of their customers.