A one-time extension of up to two years may be added to this review cycle. Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. A catalog of API …

Jul 25, 2025 · API 598 is the American Petroleum Institute (API) standard that defines inspection and testing requirements for industrial valves, including: Pressure tests (shell, seat, backseat) Leakage …

Valve Inspection and Testing, covers the testing and inspection requirements for gate, globe, check, ball, plug and butterfly valves. It has acceptable leakage rates for liquid as well as gas testing.

API 598 covers pressure test requirement, test pressure, leakage class and test duration etc for resilient-seated, nonmetallic-seated , and metal-to-metal-seated valves of the gate, globe, plug, ball, check, …

Except as provided in 6.2.2, the shell test shall be made by applying the pressure inside the assembled valve with the valve ends closed, the valve partially open, and any packing gland tight enough to …

Oct 24, 2025 · API 598 is a valve inspection and pressure testing standard developed by the American Petroleum Institute (API) and applies to industrial valves (such as gate valves, globe valves, ball …

Oct 13, 2014 · API 598 Valve Standards, found on Allied Valve Inc., provides specifications for API 598 valve inspection, examination, and testing requirements.

Jan 16, 2026 · API 598 valve inspection details test types, leak rates, and compliance steps to ensure industrial valves meet safety and performance standards.

Aug 8, 2025 · For sales engineers and procurement specialists in the valve industry, understanding API 598 is critical for specifying, testing, and validating valve performance. This standard defines …

API 598 standard covers inspection, examination, supplementary examinations, and pressure test requirements for resilient-seated, nonmetallic-seated (e.g. ceramic), and metal-to-metal-seated valves.