Active standard | Published: 01/05/2026

API RP 553

Refinery Valves and Accessories for Control and Safety Instrumented Systems, Third Edition

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API RP 553

Publication date: 01/05/2026

Pages: 142

Country: American technical standard

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Anotation

Please note that any addenda or errata may not be included in translated editions of this standard.

This recommended practice addresses the requirements of automated valves in refinery and related services. Recommended criteria are provided for the sizing and selection, specification, material selection, flow characteristic evaluation, fugitive emissions, and application of control valve assemblies. Criteria considerations, such as flashing, cavitation, outgassing, noise, and others, are discussed.Recommendations for emergency block and vent valves, on/off valves intended for safety instrumented systems (SISs), and special design valves for refinery services, such as actuators on fluid catalytic cracking unit (FCCU) slide valves, and vapor depressurizing systems are also included in this recommended practice.

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