Reciprocating machinery generates cyclic fluid flow. As the piston moves, it forces fluid into the piping in intermittent pulses rather than a smooth, continuous stream. If the frequency of these pulses matches the natural acoustic frequency of the piping system, acoustic resonance occurs. This resonance can lead to: High-amplitude pressure pulsations. Severe structural vibration of piping and vessels.

API 688 PDF has a wide range of applications in the oil and gas industry, including:

The legitimate API 688 PDF can be purchased and downloaded through official standards distributors such as the API Publications Store, IHS Markit, or Techstreet.