API600 Gate Valve Seat Leakage Acceptance Criteria Australian .
All Australian Pipeline Valve API 600 gate valves are high and low pressure tested. Furthermore, even though API 598 allows some leakage, the acceptance level for the high pressure hydrostatic test on APV gate valves is stricter the API 598 allows. The below example shows ANSI 150LB. In addition, our low pressure test.
Valve Test Standards & Leakage Rates Global Supply Line
difference being 6D's zero allowable leakage on closure (seating) tests which is achieved as most of the valves built to API 6D are resilient seated. However, pipeline full port metal seated API 6D check valves do have a seat leakage allowance. API 598 does incorporate a zero leakage requirement for soft seated valves.Get Price