API 614 5th Edition provides requirements and guidelines for lubrication, shaft sealing, and control oil systems used in petroleum and gas industries.
The document defines the scope, normative references, terminology, and general design requirements for oil and gas industry equipment. It covers system selection, pressure design criteria, piping, instrumentation, control, and electrical systems, as well as inspection, testing, and shipping preparation.
Appendices include data tables, symbols, drawing requirements, filter performance tests, and material specifications. The standard also outlines seller documentation, quotation requirements, and optional test procedures for special‑purpose oil systems. This manual is written in Chinese.
| PSV function | automatic pressure relief device |
|---|---|
| NPT thread type | American tapered pipe thread |
| FCV type | flow control valve |
PSV is an automatic pressure relief device that opens when pressure exceeds the set point.
NPT refers to an American tapered pipe thread.
The American Petroleum Institute (API) publishes the standard.