Api 614 Pdf Free 11
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The API 614 and 616 balance valves are installed at the pump discharge as opposed to the pump inlet. If they are to be installed at the pump inlet, the API 614 balance valve must be reversed and the API 616 balance valve must be installed as the balance valve on the pump inlet.
The API 614 balance valve is generally preferred over the API 616 balance valve in the manufacture of large-scale pumps because of the greater size of the API 614 balance valve, which simplifies the installation on the pump. The API 616 balance valve may be used on large-scale pumps,
The API 614 and 616 balance valves are installed in the factory. For on-site installation, the balance valves are secured to the pump with the API 614 balance valve facing the inlet port and the API 616 balance valve facing the outlet port. The balance valves are secured by a threaded nut and self-tapping screw that are tightened against the balance valves to prevent leakage. The balance valves are installed with the spool valve open.
An example of a pump in which the API 614 balance valve was installed is shown in Figure 10. The flow of oil is from the left to the right. Since the oil enters the pump at the left, it should flow to the right. The API 616 balance valve was installed to prevent reverse flow, which is the flow of oil from the left to the right.
although the small size of the API 616 balance valve makes it more difficult to install. The balance valves are used in pairs. When installed at the pump discharge, the API 614 balance valve allows oil to flow to the oil side of the valve. When installed at the pump inlet, the API 616 balance valve permits oil to flow from the oil side of the valve to the pump.
API 510 and 516 balance valves are pressure sensitive and are designed to override the automatic shutoff valve after a predetermined time of operation. This valve is used to preclude over or under lubrication of the pump.
adequate transfer of the fluid. The API Oil Service 614 standard defines typical pressure conditions, pressure transfers, and a minimum flow rate for a specific transfer valve design and uses a simple,
The API 614 standard contains the minimum flow rate required for proper startup, operation, and shutdown of the pump. The standard describes the required fluid flow rate for all
seasons, but for normal operation of the pump for summer, winter, or any other season, some application of judgement is required. It is a good idea to check the minimum flow rate is adequate for the
In 2002, API revised and expanded its standard, changing the name to API 614. The new version of 614 includes the original 614, with the addition of some new lubrication procedures for the mechanical seals. It also includes a new set of procedures for the use of some gear oils to prevent the growth of bacteria in the mechanical seal system. The 2002 version of the standard is available for free on the API website (Figure 7). 827ec27edc